She should divide both sides by -5 while multiplying the other side by -5. She also did not replace the > symbol with a symbol.
What is an inequality ?An inequality in mathematics is a relationship that makes a non-equal comparison between two numbers or other mathematical expressions. It is most commonly used to compare the sizes of two numbers on a number line.
From given question :
-5x-3.5>6.5
-5x > 10
X > -50
Since, we have to solve for x
so, we will isolate x on anyone side
step-1:
Add both sides by 3.5
- 5x - 3.5 + 3.5 > 6.5 + 3.5
- 5x > 10
step-2:
Divide both sides by -5
we know that whenever we divide both sides by negative sign , it's inequality gets revered
so, we get
- 5x / -5 < - 50 / -5
we get
x < 10
so,
She should divide both sides by -5 while she multiplied by -5 on other side
and she also did not change the > symbol to a < symbol
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Use the method of completing the square to write the equation of the given parabola in this form:
(y-k)=a(x-h)²
where a≠ 0,(b, k) is the vertex, and x=h is the axis of symmetry.
Find the x-intercepts of the parabola with vertex (6,-5) and y-intercept (0,175). Write your answer in this form: x₁, y₁),(x₂, y₂). If necessary, round to the nearest hundredth.
The x-intercepts of the parabola are (x₁, y₁) = (6.67, 0) and (x₂, y₂) = (5.33, 0).
What is the equation of a parabola?
The general equation of a parabola is given by y = a(x – h)2 + k or x = a(y – k)2 +h. Here (h, k) denotes the vertex.
To write the equation of the given parabola in the desired form, we can complete the square.
The equation of a parabola with vertex at (h, k) and axis of symmetry x = h is given by:
y = a(x - h)^2 + k
where a is a nonzero constant.
In this case, the vertex is (6, -5) and the y-intercept is (0, 175), so the equation of the parabola is of the form:
y = a(x - 6)^2 - 5
Substituting the y-intercept, we have:
175 = a(0 - 6)^2 - 5
Solving for a, we find that a = 15/4.
Thus, the equation of the parabola is:
y = 15/4(x - 6)^2 - 5
To find the x-intercepts, we need to find the values of x such that y = 0. Substituting y = 0 into the equation of the parabola, we have:
0 = 15/4(x - 6)^2 - 5
Adding 5 to both sides, we have:
5 = 15/4(x - 6)^2
Dividing both sides by 15/4, we have:
4/15 = (x - 6)^2
Taking the square root of both sides, we have:
x - 6 = +/- 2/3
Thus, the x-intercepts are at x = 6 +/- 2/3.
Therefore, the x-intercepts of the parabola are (x₁, y₁) = (6 + 2/3, 0) and (x₂, y₂) = (6 - 2/3, 0).
Rounded to the nearest hundredth, the x-intercepts are (x₁, y₁) = (6.67, 0) and (x₂, y₂) = (5.33, 0).
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The average ticket price for several NFL teams is listed below.
Seahawks =$84.60
Packers= 89.37
Jets= $105.66
Cowboys= 110.20
Lions = $79.16
how much more would it cost a family of 5 to get the jets game ($105.66) than a Lions game ($79.19?
It would cost a family of 5 $132.35 more to get the jets game than a Lions game
How to determine how much more it would cost a family of 5 to get the jets game than a Lions game?
Given that:
The average ticket price for Jets game = $105.66
The average ticket price for Lions game = $79.19
Jets game for a family of 5 will be:
Jet game cost = 5× $105.66 = $528.3
Lions game for a family of 5 will be:
Lions game cost = 5× $79.19 = $395.95
Difference = $528.3 - $395.95 = $132.35
Therefore, it would cost a family of 5 $132.35 more to get the jets game
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Tamala’s school day is 7 1/2 hours. She has six classes that are 7/6 of an hour long each. How many hours is Tamala not in class while she is at school?
By simplifying and solving, Tamala is not in class while she is at school is 0.5 hour.
What is Algebraic simplification?Algebraic simplification is the process of rewriting an algebraic expression in a simpler form, without changing its value.
What is algebra?Algebra is a branch of mathematics that involves the use of letters and symbols to represent unknown quantities, known as variables, in equations and formulas.
Tamala is in class for 6 * (7/6) = 7 hours.
Tamala is not in class for 7(1/2) - 7 = 1/2 hours.
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A superball is dropped from a height of h feet and left to bounce forever. The rebound ratio of the ball is r. In terms of r and h. find the formula for the total time needed for all this bouncing to take place.
Answer:
a b c or d?
Step-by-step explanation:
Answer: If a superball is dropped from a height of h feet and left to bounce forever, the total time needed for all this bouncing to take place can be represented by the formula:
t = h / (r - 1)
where t is the total time, h is the height from which the ball is dropped, and r is the rebound ratio of the ball.
The rebound ratio of the ball is the fraction of the ball's initial height that it bounces back up after each bounce. For example, if a ball has a rebound ratio of 0.5, it will bounce back up to half its initial height after each bounce.
The total time needed for the ball to bounce forever is equal to the height from which the ball is dropped divided by the difference between the rebound ratio and 1. This is because the ball will bounce back up a fraction of its initial height after each bounce, and the total time needed for all the bounces to take place is determined by the difference between the height of the ball and the fraction of the height that it bounces back up.
[tex]2\frac{5}{7}g+3\frac{3}{5} g[/tex]
The solution of the fraction is 6 11/35.
What is fractions?A fraction, such as one-half, eight-fifths, or three-quarters, indicates the number of components of a particular size as it is represented in common English. A common, vulgar, or simple fraction is one that has a non-zero denominator shown below (or after) the line that separates the numerator from the denominator. Compound fractions, complicated fractions, and mixed numeral fractions are examples of uncommon fractions that use numerators and denominators.The numerator and denominator of positive common fractions are both natural integers. The denominator shows how many of the numerator's equal parts make up a unit or whole, and the numerator reflects the number of equal parts. Since there can never be zero components in a whole, the denominator cannot be zero.Covert mixed numbers to improper fractions:
[tex]2\frac{5}{7}g=\frac{19}{7}g[/tex]
[tex]3\frac{3}{5}g=\frac{18}{5}g[/tex]
factor out common term g:
=[tex]g(\frac{19}{7} +\frac{18}{5})\\g(\frac{221}{35})[/tex]
Convert improper fractions to mixed numbers:
[tex]=\frac{221}{35}g \\\\=6\frac{11}{35} g[/tex]
Hence, The solution of the fraction is 6 11/35.
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If g (x) = 4x + 6 and f(g(x))
12x + 8 than f(x)
Answer:
Given g(x)=4x+6
f(x)=12x+8
f(g(x))=f(4x+6)
=12(4x+6)+8 (substitute g(x) in f(x) )
=48x+72+8
= 48x+80
Johnny oeders 5 cheese pizzas and 6 pepperoni pizzas for his son's birthday party. He paid $136. Mid party he realized he was going to run out of pizzaz, so he decided to place a second order. This time johnny ordered 2 cheese pizzas and 2 pepperoni pizzas and paid $49.00. Write a linear system that could be used to find the cost of each type of pizza?
Step-by-step explanation:
Let x = cost of cheese pizza
Let y = cost of pepperoni pizza
x + 6y = 136
2x + 2y = 49
Solve the system:
x = $14
y = $15
Norah Johns has foreign source income of $30,000 during the current year.As the foreign jurisdiction withholds 25% of such income,she only receives $22,500 What is the non business and business income of Norah Johns?
The answer is in simplest form is 672.
What is simplest form?The simplest form is the smallest possible equivalent of the fraction of the number. Steps for finding to the simplest form: Search for the common factors in to the numerator and the denominator. Check whether one of the numbers in the fraction is a prime for number.
As per the given question the number are
910
238
We have to find 910-238
So,
910-238
We have to calculate sum or difference
And we got 672.
Thus, the answer is 672 or 6.72×10^2 ( in alternate form).
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A book claims that more hockey players are born in January through March than in October through December. The following data show the number of players selected in a draft of new players for a hockey
league according to their birth month. Is there evidence to suggest that hockey players' birthdates are not uniformly distributed throughout the year? Use the level of significance a = 0.05.
Click the icon to view the table.
Click the icon to view the chi-square table of critical values.
What are the null hypothesis and alternative hypotheses?
OA. H₂: The distribution of hockey players' birth months is uniformly distributed.
H,: More hockey players are born in the first half of the year than the second half.
OB. H: The distribution of hockey players' birth months is uniformly distributed.
H,: More hockey players are born in January-March than October-December.
OC. H: The distribution of hockey players' birth months is not uniformly distributed
H,: The distribution of hockey players' birth months is uniformly distributed.
D. H.: The distribution of hockey players' birth months is uniformly distributed.
H,: The distribution of hockey players' birth months is not uniformly distributed.
Compute the expected counts for each birth month. The total number of hockey players is 188.
Expected Count
Birth Month
January-March
April-June
July-September
October-December
Observed Count
66
59
34
29
(Round to two decimal places as needed.)
The null hypothesis is a typical statistical theory which suggests that no statistical relationship and significance exists in a set of given single observed variable, between two sets of observed data and measured phenomena.
The required details for null hypothesis in given paragraph
The null hypothesis and alternative hypothesis in this case would be:
H₀: The distribution of hockey players' birth months is uniformly distributed.
H₁: The distribution of hockey players' birth months is not uniformly distributed.
The expected counts for each birth month can be calculated as follows:
Expected Count = (Total Number of Players) * (Proportion of Total Players for Each Birth Month)
Since there are 4 birth months and the distribution is assumed to be uniform, the proportion of total players for each birth month is 1/4 = 0.25. Therefore, the expected count for each birth month is:
Expected Count = 188 * 0.25 = 47
To test the null hypothesis, we can then calculate the chi-square statistic using the following formula:
χ² = ∑((O - E)² / E)
where O is the observed count, E is the expected count, and the sum is taken over all birth months.
Plugging in the observed and expected counts, we get:
χ² = ((66 - 47)² / 47) + ((59 - 47)² / 47) + ((34 - 47)² / 47) + ((29 - 47)² / 47)
= 3.87 + 2.04 + 3.87 + 5.57
= 15.35
In this case, df = 3.
Looking up the critical value in the chi-square table with df = 3 and a = 0.05, we find that the critical value is 7.815. Since the chi-square statistic (15.35) is greater than the critical value, we reject the null hypothesis and conclude that there is evidence to suggest that the distribution of hockey players' birth months is not uniformly distributed.
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Find the probability P(E or F) if E and F are mutually exclusive, P(E)= 0.30, and P(F) = 0.47. The probability P(E or F) is (Simplify your answer.)
Given that P(E)= 0.30 and P(F)= 0.47, the probability of P(E or F) if E and F are mutually exclusive will be 0.77.
What is probability?The area of mathematics known as probability deals with numerical representations of the likelihood that an event will occur or that a statement is true. An event's probability is a number between 0 and 1, where, roughly speaking, 0 denotes the event's impossibility and 1 denotes certainty. A probability is a numerical representation of the likelihood or chance that a specific event will take place. Both proportions ranging from 0 to 1 and percentages ranging from 0% to 100% can be used to describe probabilities.
Here,
P(E)=0.30
P(F)=0.47
P(E∩F)=0 as they are mutually exclusive
P(E∪F)=P(E)+P(F)-P(E∩F)
=0.30+0.47
P(E∪F)=0.77
The probability of P(E or F) if E and F are mutually exclusive will be 0.77 given that P(E)= 0.30, and P(F) = 0.47.
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which of the following two pairs of sets have the same cardinality? question 9 options: natural numbers and irrational numbers integers and natural numbers real numbers and rational numbers irrational numbers and rational numbers
Natural numbers and irrational numbers are two pairs of sets that have the same cardinality.
It is sufficient to demonstrate the existence of a bijection between the set of real numbers R and the set of irrational numbers RQ in order to demonstrate that both have the same cardinality:
For each positive integer n, map n to 2n to produce a countable number of holes in R. Be aware that these countable holes are located at all irrational locations (2n-1), as well. R should be mapped to itself. R should be mapped to itself. Feel free to use your preferred irrational number in the above in place of [tex]\pi[/tex].
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given f(x) =-2x-5 find (-1)
Answer:
f(-1) = -3
Step-by-step explanation:
f(x) =-2x-5
f(-1) = -2(-1)-5 ==> plug in -1 for x
f(-1) = 2-5
f(-1) = -3
you owe $31000 on student loans at an interest rate of 3.35% compounded monthly. You want to pay off the loan in 8 years. What will your monthly payments be? How much interest do you pay?
You owe $31000 on student loans at an interest rate of 3.35% compounded monthly.
The total interest paid would be $556.16.The monthly payment would be $318.54.What is interest?Generally, To calculate the monthly payment amount, you can use the following formula:
monthly payment = (interest rate / 12) x (loan balance / (1 - (1 + (interest rate / 12)) ^ (-term in months)))
Plugging in the values given in the question, the monthly payment would be:
monthly payment = (3.35% / 12) x ($31000 / (1 - (1 + (3.35% / 12)) ^ (-8 years x 12 months/year)))
= (0.00335) x ($31000 / (1 - (1 + 0.00335) ^ (-96)))
= $318.54
So the monthly payment would be $318.54.
To calculate the total interest paid over the course of the loan, you can use the following formula:
total interest = (monthly payment x term in months) - loan balance
Plugging in the values given in the question, the total interest paid would be:
total interest = ($318.54 x 96 months) - $31000
= $30,443.84 - $31,000
= $-556.16
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Hi i need this for noooow please
The y-intercept is the point the graph intersects the y-axis. It is represented by the constant c in the equation of a straight line graph, y = m·x + c
6. The y-intercept is 7
8. The y-intercept is 0
12 a. The error is taking the x-intercept as the y-intercept
b. Please find attached the graph of line with a y-intercept of 3 drawn with MS Excel
What is a straight line graph?A straight line graph is the graph of a linear equation.
The slope-intercept form of the equation of a straight line graph is y = m·x + c, where;
m = The slope of the graph
c = The y-intercept
6 The y-intercept is the point the graph crosses the y-axis.
The line crosses the y-axis at the point (0, 7)
The y-intercept is 78. The point at which the graph crosses the y-axis is (0, 0)
The y-intercept, which is the point at which the graph crosses the y-axis, from the graph of question 8 is 012. The graph in the question is a straight line graph that passes through the points (3, 0), and (0, -4)
The x-intercept of the graph is 3
The y-intercept of the graph is -4
a. The possible error of the graph that is an example of a line with a y-intercept of 3 is therefore, mistaking the y-intercept for the x-intercept
b. Please find attached the graph of the line y = x + 3 that has a y-intercept of 3 drawn with MS Excel on the graph of the question with equation y = (4/3)·x - 4
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Describe the composition of translations.
translation: (x, y)__
translation: {x, y)__
The composition of translations for the first image is (x+1, y+5) and for the second image is (x-4, y).
What is a translation?
A transformation that moves a figure through its points using a given ruler—a translation vector—is referred to as a translation. Without altering the original geometry, this process moves each point in a picture both horizontally and vertically.
Given a graph of translation
The first image is translated as 1 unit upward and 5 units right side.
Then, translation (x,y) → (x+1, y+5)
And,
The second image is translated as 4 units downward only.
Then, translation (x,y) → (x-4, y)
Hence, the above is the required composition of translations.
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How many days of milking will it take to get enough milk to make all this cheese?
Answer:
depending on how much cheese you are trying to produce is the amount of milk you need
Write the slope-intercept form of the equation of the line through the given point with the given slope.
The slope-intercept form of the equation of the line through the given point with the given slope is y=-4x+1.
The given coordinate point is (-1, 5) and slope=-4.
What is the slope intercept form?The slope intercept form of a straight line is one of the most common forms used to represent the equation of a line. The slope intercept formula can be used to find the equation of a line when given the slope of the straight line and the y-intercept.
The standard form of the slope intercept form is y=mx+c.
Substitute (x, y)=(-1, 5) and m=-4 in standard form of the slope intercept form, we get
5=-4×(-1)+c
⇒ c=5-4
⇒ c=1
Substitute m=-4 and c=1 in y=mx+c, we get
y=-4x+1
Therefore, the slope-intercept form of the equation of the line through the given point with the given slope is y=-4x+1.
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The entrance fee for a theme park is $20. Tickets for each ride and attraction are $3 a piece. Which of the following equations describes the relation between the total cost (Y) and the number of tickets purchased (X) in a single visit to the park?
a. Y = 3+ 20X
b. Y = 60X
c. Y = 20 +3X
d. X = 20 +3Y
Answer: c. Y = 20 +3X
The system of equation that describes the relation between the total cost (Y) and the number of tickets purchased (X) in a single visit to the park is Y = 3X + 20 i.e, option (C)
Define System of Equation
A set of simultaneous equations, also known as a system of equations or an equation system, is a finite set of equations for which common solutions are sought.
Given,
Cost of theme park is = $20
Tickets for each ride and attraction are = $3 a piece
Number of tickets purchased = X
So, total cost of tickets is = 3 * X
Total cost of visit to the theme park is = Y
So, the equation we get
Y = 3X + 20
Hence, the system of equation that describes the relation between the total cost (Y) and the number of tickets purchased (X) in a single visit to the park is Y = 3X + 20 i.e, option (C).
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Question 1 of 10
What is the value of x ?
A. 160°
B. 50°
C. 55°
D. 20°
Answer:
it is B
Eplanation:
180-155=75 (straight line add up 180 degrees)
75+55+x=180
130+x=180(angles in triangle also add up 180 degrees)
x=180-130(rearranging formula)
x=50, which is option letter B
Your family plans to start a small business in your neighborhood. Your father borrows
$10, 000 from the bank at an annual interest rate of 8% rate for 36 months. What is the
amount of interest he will pay on this loan?
The amount of interest he will pay on this loan is $12,400.
Principal = $10,000
Rate = 8%
Time = 36 months, 1 year - 12 months
36 months - 36/12= 3 years
S.I. = PRT/100
10,000*8*3/100
240,000/100 = $2,400
A = P+I = 10,000+2,400= $12,400
The amount of interest he will pay on this loan $12,400.
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can someone help me with this thank you
Answer:
25.
Step-by-step explanation:
1. if according to the condition 'm∠2 is three times m∠1', then it is possible to write: 3m∠1=m∠2, then
2. if according to the condition m∠WXZ=m∠1+m∠2, then it is possible to write it as:
m∠WXZ=m∠1+3m∠1; ⇔m∠WXZ=4*m∠1;
3. if according to the condition m∠WXZ=100, then
100°=4*m∠1, then
m∠1=100°:4=25°.
Given x=a+b. Use the Pythagorean Theorem to find the value of x.
[tex]a=\sqrt{5^2-4^2}=3 \\ \\ b=\sqrt{5^2-4^2}=3 \\ \\ \therefore x=3+3=\boxed{6}[/tex]
Can the following represent a function? Explain
(2,5) (3,5)(4,5)(5,5)
Answer:
Yes
Step-by-step explanation:
If you graphed that, it would be a horizontal line. Which is a function. If it is a vertical line, then it is not.
mathe help needed easy graphing
Answer:
y = 2.5x
Step-by-step explanation:
When the relationship is proportional you can find the slope (or unit rate) by taking any point in the form y/x
20/8 = 2.5
30/12 = 2.5
This will work of every point n the line.
Look at photo for problem
Just need chart filled out
3. y=-(x+2)²+1
Following values can be filled in the table:
(0,-3), (-1,0), (1,-8), (-2,1), (2,-15)
It can be solved using the concept of graph plotting and function.
What is graph?
When a set of points are connected together to form a strcture then the structure is known as graph. The set of ponts is known as ordered pair.
Consider the eqution.
[tex]y=-(x+2)^2+1[/tex]
Substitute the simplest value x = 0 and find the value of y.
[tex]y=-(0+2)^2+1\\=-3\\[/tex]
Now, substitute x = -1 and find the value of y.
[tex]y=-(-1+2)^2+1\\=0\\[/tex]
Now, substitute x = 1 and find the value of y.
[tex]y=-(1+2)^2+1\\=-8\\[/tex]
Now, substitute x = -2 and find the value of y.
[tex]y=-(-2+2)^2+1\\=1\\[/tex]
Now, substitute x = 2 and find the value of y.
[tex]y=-(2+2)^2+1\\=-15\\[/tex]
Hence, following values can be filled in the table:
(0,-3), (-1,0), (1,-8), (-2,1), (2,-15)
It can be solved using the concept of graph plotting.
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In need of help!! Determine if the equation given in slope-intercept form represents the graph. If the equation is correct support your reasoning with why it is correct. If the equation is incorrect, give the correct slope-intercept form equation explaining how you determined it.
The equation is accurate. A line's slope and y-intercept are expressed in the form y is mx + c, where m is the slope and c is the y-intercept.
What does a line's slope-intercept form look like?A line's slope and y-intercept are expressed in the form y = mx + c, where m is the slope and c is the y-intercept.
y = (3/2)x + 1 is the given equation for the line.
Add x = 0 to the above equation, y = (3/2)(0) + 1 y = 1, to determine the line's y-intercept.
Take note that the line's graph's y-intercept is also 1.
The line's graph includes points (2,4).
Put the coordinates of the location into the above equation to see if it matches the coordinates of (2,4) or not:
4 = (3/2)(2) + 1
4 =4
The equation is accurate.
Consequently, it can be claimed that the following equation reflects the graph.
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Explain the steps you would use to solve this equation. Find the solution.
8^2z=4096
A continuous probability distribution has density:
a) If the expected value is equal to 1, find the values of a and b.
b) What is the variance of X?
Therefore the solution to this question is expression a=3/5 & expression b=6/5 3a+b=3 , and 10a+5b=6+6=12 .
What is probability?Probability is the study of how likely it is for an event to occur or for a statement to be true, with numerical explanations of probability being a key component. An event's probability is represented by a number between 0 and 1, where, broadly speaking, 0 indicates that the event is impossible and 1 indicates that it is certain to occur.
Here,
Naturally, the total probability for x∉[0,1] is 0 and since the total probability must be 1, we have
∫01a+bx2dx=1
The left-hand side is
[ax+b[tex]x^{3}[/tex]/3] x=1 & x=0 => a+b3
3a+b=3
In general, for continuous probability distributions we have
E(x)=∫P(x)xdx
(If you have a sufficiently advanced version of integration, the restriction to continuous distributions may be lifted.)
In this case, it's
E(x)=[a[tex]x^{2}[/tex]/2+b[tex]x^{4}[/tex]/4]x=1 & x=0 => a/2+b/4
So,
a/2+b/4=3/5
10a+5b=12
Being shrewd with matrix inversion or anything of the sort is pointless. Just get rid of b:
15a+5b=15
5a=3
a=3/5
b=3(1−a)=6/5
and indeed 3a+b=3 , and 10a+5b=6+6=12 .
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A school dance committee is to consist of 2 freshmen, 3 sophomores, 4 juniors, and 5 seniors. If 7 freshmen, 9 sophomores, 7 juniors, and 7 seniors are eligible to be on the committee, in how many ways can the committee be chosen?
There are 3457440 ways combination in which this dance committee can be formed.
What is permutation and combination?
A set of items can be divided into subsets in two different ways: combination and permutation. The subset's components can be listed in any order when combined. The components of the subset are arranged in a particular order in a permutation.
2 freshmen out of 7 freshmen can be chosen in ⁷C₂ ways.
3 sophomores out of 9 sophomores can be chosen in ⁹C₃ ways.
4 juniors out of 7 juniors can be chosen in ⁷C₄ ways.
5 seniors out of 8 seniors can be chosen in ⁸C₅ ways.
⁷C₂ × ⁹C₃ × ⁷C₄ × ⁸C₅ ways, the dance committee of 2 freshmen, 3 sophomores, 4 juniors, and 5 seniors can be chosen.
= 7!/(7-2)!2! × 9!/(9-3)!3! × 7!/(7-4)!4! × 8!/(8-5)!5!
= 7!/5!2! × 9!/6!3! × 7!/3!4! × 8!/3!5!
= 21×84×35×56.
= 3457440 ways.
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whats 0.00132 in scientific notation
Answer:
1.32x10^-3
Step-by-step explanation:
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