Answer:
x = 5
Step-by-step explanation:
Let's say
x = #s of nickels Nina has (we are going to try to get X)
y = # of nickels Maurice has
5x + 9 < The amount Nina has
y = 2x < Amount that Maurice has
Add them both to the total, 84
5x + 9 + 5y = 84
Transfer the 9 to the other side
5x + 5y = 75
Substitute y with it's value
5x + 5(2x) = 75
5x + 10x = 75
15x = 75
Divide
x = 5
what does a linear graph with a negative slope indicate? responses as the independent variable decreases, the dependent variable increases. as the independent variable decreases, the dependent variable increases. there is no relationship between the independent and dependent variables. there is no relationship between the independent and dependent variables. as the independent variable increases, so does the dependent variable. as the independent variable increases, so does the dependent variable. as the independent variable increases, the value of the dependent variable remains the same. as the independent variable increases, the value of the dependent variable remains the same.
A linear graph with a negative slope indicates that as the independent variable decreases, the dependent variable increases.The line with a negative slope is sloping down to the right.
This relationship is represented by a line sloping down to the right. A line with a negative slope indicates that there is a negative correlation between the two variables. This means that as one variable decreases, the other variable increases.
This is because the line is going down from left to right, which means that the y-value is increasing as the x-value decreases. This relationship is known as a negative correlation.It is also known as an inverse relationship. In an inverse relationship, the two variables move in opposite directions. As one variable decreases, the other variable increases.
Learn more about variable at : https://brainly.com/question/15078630
#SPJ4
If 4x is one factor of 4x^2 - 12x, what is the other factor?
Answer:
(x - 3)
Step-by-step explanation:
4x² - 12x ← factor out 4x from each term
= 4x(x - 3)
the factors are 4x and (x - 3)
what is the answer to 3 2/13 + 7/8
Answer:
the exact form is 419/104
decimal for:4.02884615...
mixed number form: 4 3/104
Step-by-step explanation:
calculator
Using the table, give the percentage associated with each unit of standard deviation in the standard normal curve to the nearest hundredth.
Standard Deviation Percentage Area
-2 to -1 ____________%
0 to +1 ____________ %
0 to +2 _____________%
+1 to +3 _____________%
-1 to +2 _____________%
The corresponding standard deviation percentage area for -2 to -1, 0 to +1, 0 to +2, +1 to +3 and -1 to +2 are 13.59%, 34.13%, 47.72%, 15.74% and 81.85%
How to find the percentage associated with standard deviation?To find the Standard Deviation Percentage Area, you have to consider the lower and upper points:
-2 to -1
The gap between -2 and -1 is 1 step, you will subtract -1 from -2:
-2 to -1 => 0.4772 - 0.3413 = 0.1359 = 13.59%
Note: the values for -2 and +2 are the same. The same also applies to -1 and +1 and others
0 to +1
Check the value under 1. That is 0.3413 = 34.13%
0 to +2
Check the value under 2. That is 0.4772 = 47.72%
+1 to +3
The gap between +1 and +3 is 2 steps, you will subtract 1 from 3:
+1 to +3 => 0.4987-0.3413 = 0.1574 = 15.74%
-1 to +2
-1 to +2 is the same as moving -1 to 0 and then moving from 0 to +2, you will add the values for -1 and +2:
-1 to +2 => 0.3413 + 0.4772 = 0.8185 = 81.85%
Therefore, the Standard Deviation Percentage Area for -2 to -1, 0 to +1, 0 to +2, +1 to +3 and -1 to +2 are 13.59%, 34.13%, 47.72%, 15.74% and 81.85% respectively
Learn more about Standard Deviation Percentage Area on:
https://brainly.com/question/10416371
#SPJ1
a theater sells adult and child tickets to its plays. 2 adult tickets and 3 child tickets cost $30.75. 3 adult tickets and 2 child tickets cost $33.00. let represent the cost of 1 adult ticket, and represent the cost of 1 child ticket. which system of equations can be used to determine the cost of each type of ticket? a. b. c. d.
The system of equations that can be used to represent the cost of each type of ticket is 2a + 3c = 30.75 and 3a + 2c = 33 .
In the question ,
it is given that ,
a theater sells adult and child tickets for its play .
the cost for 2 adult ticket and 3 child ticket is = $30.75
and the cost for 3 adult tickets and 2 child tickets = $33.00
let the cost of 1 adult ticket = "a" and
let the cost of 1 child ticket = "c"
So, According to the question ,
the equation to represent both the situation is
2a + 3c = 30.75 and
3a + 2c = 33
Therefore , The system of equations that can be used to represent the cost of each type of ticket is 2a + 3c = 30.75 and 3a + 2c = 33 .
The given question is incomplete , the complete question is
A theater sells adult and child tickets to its plays. 2 adult tickets and 3 child tickets cost $30.75. 3 adult tickets and 2 child tickets cost $33.00. let "a' represent the cost of 1 adult ticket, and "c" represent the cost of 1 child ticket . Write a system of equations can be used to determine the cost of each type of ticket ?
Learn more about Equations here
https://brainly.com/question/17612414
#SPJ4
PLEASE HELP FAST
A cylindrical jar has a radius of 6 inches and a height of 10inches. The jar is filled with marbles that have a volume of 20 in3. Use 3.14 for pi. Show work. Complete sentences.
a. What is the volume of the jar?
b. How many whole marbles can fit in the jar? *Each marble has the volume of 20 cubic inches
The volume of the cylindrical jar be 1130.97 in³.
Also, 56 whole marbles can fit in the jar.
Given, a cylindrical jar has a radius of 6 inches and a height of 10 inches.
The jar is filled with marbles that have a volume of 20 in³.
(a) The volume of the cylindrical jar be,
Volume = πr²h
Volume = (3.14)(6)²(10)
Volume = 1130.97 in³
(b) Now, if each marble has the volume of 20 in³
then, the number of marbles that can be fit in the jar be,
The number of marbles = 1130.97/20
The number of marbles = 56.
Hence, the volume of the cylindrical jar be 1130.97 in³.
Also, 56 whole marbles can fit in the jar.
Learn more about Volumes here https://brainly.com/question/463363
#SPJ1
How to isolate Y when y - 3 = 2/5 (x+4) is the problem
Explanation:
To isolate the Y from y - 3 = 2/5 (x+4), you need to add 3 from both sides to move it to the right side of the equation:
y - 3 = 2/5 (x+4)
+3 +3
y = 2/5 (x+4) + 3
Answer:
add 3 to both sides
or move 3 across the equal sign, which will change its sign from - to +
= y = 2x + 8 / 5 +
examples of a unit rate
A unit rate means a rate for one of something. We write this as a ratio with a denominator of one. For example, if you ran 70 yards in 10 seconds, you ran on average 7 yards in 1 second. Both of the ratios, 70 yards in 10 seconds and 7 yards in 1 second, are rates, but the 7 yards in 1 second is a unit rate.
Write an equation of the line passing through the point A (8, 2) that is perpendicular to the line y = 4x - 7.
The equation of line perpendicular to line y = 4x – 7 and passing through point A (8, 2) is y + (1/4)x = 4.
What does the point slope form of a line equation look like?A line's point slope form equation is y - y₁ = m(x - x₁). Consequently, y - 0 = m(x = 0), or y = mx, is the equation of a line passing through the origin with a slope of m.How do you figure out the slope of a line that is perpendicular to another line?The slope of a line that is perpendicular to another line is equal to the negative reciprocal of that line's slope.
Given: A line is perpendicular to line y = 4x – 7 and passes through point A (8, 2).
We know that,
Slope of line perpendicular to another line is negative reciprocal of its slope.
So, m(slope) = -1/4
Equation of line is given as follows:
y - y₁ = m(x - x₁)
y - 2 = -1/4(x - 8)
y + (1/4)x = 4
Therefore, the equation of line perpendicular to line y = 4x – 7 and passing through point A (8, 2) is y + (1/4)x = 4.
Learn more about point-slope form here:
https://brainly.com/question/22250570
#SPJ1
the weight of football players is normally distributed with a mean of 210 pounds and a standard deviation of 10 pounds. the probability of a player weighing less than 220 pounds is . a. 0.1587 b. .5000 c. 0.3413 d. 0.8413
Hey! I don’t understand this proof. Can anyone help me thank you!
Proved that the length of AB ≅ the length of CD
The conditions are given that
The line BC and the line AD are parallel lines
The parallel lines are two coplanar straight lines are at equal distance from each other and never intersect each other
Similarly
The measure of angle BAD is equal to the measure of angle DCB
If angle BAD = angle DCB, then we can say that the given shape is a parallelogram
In the parallelogram the opposite sides will be equal
Then the length of the length of AB equal to the length of CD
Hence, proved that the length of AB ≅ the length of CD
Learn more about parallelogram here
brainly.com/question/16578666
#SPJ1
can you substitute y=2x+4 and 6x-3y=-12
How to solve X + 3 <6
The value of the inequality X + 3 < 6 is x < 3.
What is an inequality?Inequalities are created through the connection of two expressions. It should be noted that the expressions in an inequality aren't always equal. Inequalities implies that the expressions are not equal. They are denoted by the symbols ≥ < > ≤.
Based on the information given, the inequality will be illustrated thus:
x + 3 < 6
Collect like terms
x < 6 - 3
x < 3
The value is x < 3.
Learn more about inequalities on:
brainly.com/question/25275758
#SPJ1
Emma is going to invest $720 and leave it in an account for 18 years. Assuming the interest is compounded monthly, what interest rate, to the nearest hundredth of a percent, would be required in order for Emma to end up with $2,440?
The interest rate that would be required for Emma to end up with $2440 in her bank account is 6.8%
Given,
P = $720
A = $2440
t = 18 years.
r = n[(A/P)^1/nt - 1]
r = 12 × [(2440/720)¹/⁽¹²⁾¹⁸ - 1]
r = 0.06799764
Then convert r to R as a percentage.
R = r × 100
R = 0.06799764 × 100
R = 6.8%/year
Hence the rate of interest is 6.8%
Learn more about Compound Interest here:
brainly.com/question/24924853
#SPJ1
How many pounds of chamomile tea that cost $9 per pound must be mixed with 8 pounds of orange tea that cost $6 per pound to make a mixture that costs $7.80?
The number of pounds of chamomile tea that cost $9 per pound that must be mixed with 8 pounds of orange tea that cost $6 per pound to make a mixture that costs $7.80 from the algebraic equation is; 12 pounds
How to solve algebraic equations?Let x represent the number of pounds of Chamomile tea needed.
We are told to find the number of pounds of chamomile tea that cost $9 per pound that must be mixed with 8 pounds of orange tea that cost $6 per pound to make a mixture that costs $7.80.
Therefore,
9x + 6(8) = 7.8(8 + x)
9x + 48 = 62.4 + 7.8x
9x - 7.8x = 62.4 - 48
1.2x = 14.4
x = 14.4/1.2
x = 12
Read more about Algebraic Equations at; https://brainly.com/question/4344214
#SPJ1
An exercise machine with an original price of $565 is on sale at 6% off.
a. What is the discount amount?
b. What is the exercise machine's sale price?
a. The discount amount of the exercise machine is $3.39.
b. The exercise machine's sale price will be $561.61
What is a percentage?A percentage is a value or ratio that may be stated as a fraction of 100. If we need to calculate a percentage of a number, we should divide it's entirety and then multiply it by 100.
Since the exercise machine with an original price of $565 is on sale at 6% off. The discount will be:
= Discount percentage × Price
= 6% × $565
= $3.39
The exercise machine's sale price will be:
= Original price - Discount
= $565 - $3.39
= $561.61
Learn more about percentages on:
brainly.com/question/24877689
#SPJ1
Write an equation of the line that passes through (4,-1) and is parallel to the line y = 3x +7
An equation of the parallel line is
Answer:
[tex]y=3x-13[/tex]
Step-by-step explanation:
Parallel lines have the same slope. So, the equation is:
[tex]y+1=3(x-4) \\ \\ y+1=3x-12 \\ \\ y=3x-13[/tex]
3. Candice eats six egg whites a day with a protein
content of 21.6 grams. Calculate her protein intake, if
he consumes 9 egg whites a day.
Protein intake, if he consumes 9 egg whites a day is 32.4 grams.
Given:
Candice eats six egg whites a day with a protein content of 21.6 grams.
6 egg white = 21.6 grams.
1 egg white = 21.6/6
= 216/10/6
= 216/10*6
= 216/60
= 3.6 grams.
9 eggs white = 9 * 3.6
= 9 * 36/10
= 324/10
= 32.4 grams.
Therefore protein intake, if he consumes 9 egg whites a day is 32.4 grams.
Learn more about the egg consumes here:
https://brainly.com/question/14504168
#SPJ1
Kiran is competing in a bike race. The function rule t(s)=40/s relates the time in hours of a bike race with the average speed, s, in miles per hour. Identify the constant of proportionality and explain what it means in this situation.
Answer:
Step-by-step explanation:
so, I was just commenting about word problems to another person and here is a great example of a word problem that is too complex. They are using the term "function rule" that is too broad. They have probably defined it in some text somewhere and the teacher has mentioned in super briefly, but it's what the question is all about. We need to understand what "function rule" really means. They have also used the varible "s" which is mostly reserved for Laplace / Fourier transformations. This is just a really badly written question. Don't feel bad if you don't get what it's asking. it's messy at best. t(s) is then name of our function, it's rule ( the function rule) is 40/s it's constant of proportionality is 40 , This rule would also mean that at the very very start of the race... at .001 into the race, you'll be going 40,000 MPH , which is obviously not correct. There probably needs to be some more rule descriptions saying that s is an integer, and it can't be negative. Also note that after 4 hours of racing , the speed would be 40/4 or 10 MPH, this function rule is probably not accurate after some time. the speed probably starts out fast, slows down till the close to the very end of the race... they jumps up dramatically to the finish. Watch the Tour de France writer of this question. :D The riders slow down as the race progress according to this function rule. But I don't think that's at all accurate for a real bike race. they slow down only to a point... after the start.... then hold at that speed ... till close to the end.. then speed up a lot... like 50 MPH :0
36x + 31 = 535
A.
none of these
B.
1
C.
17
D.
12
Answer:
A
Step-by-step explanation:
36x = 535 - 31
36x = 504
36/36 x = 504/36
x = 14
[tex]{ \green{ \boxed{ \red{ \sf{x = 14}}}}}[/tex]
Step-by-step explanation:
[tex]{ \purple{ \tt{36x + 31 = 535}}}[/tex]
[tex]{ \purple{ \tt36x = 535 - 31}}[/tex]
[tex]{ \purple{ \tt{36x = 504}}}[/tex]
Divide both the sides by 36 then,
[tex]{ \purple{ \tt{ \frac{ \cancel{36}}{ \cancel{36}}}}} = { \purple{ \tt{ \frac{ \cancel{504}} { \cancel{36}}}}}[/tex]
[tex]{ \red{ \boxed{ \green{ \sf{x = 14}}}}}[/tex]
Help my with this problem please 50 points
Answer:
[tex]-4x^2-4x+20[/tex]
Step-by-step explanation:
Since we're subtracting the entire quadratic, we can place the second equation in parentheses and distribute the subtraction sign.
[tex]2x^2-9x+8-(6x^2-5x-12)\\2x^2-9x+8-6x^2+5x+12\\2x^2-6x^2-9x+5x+8+12\\-4x^2-4x+20[/tex]
Answer:
[tex]-4x^2-4x+20[/tex]
Step-by-step explanation:
To find the difference of the two quadratic expressions, subtract the second expression from the first expression:
[tex]\implies (2x^2-9x+8)-(6x^2-5x-12)[/tex]
Remove the parentheses and apply the distributive law
[tex]-\left(a-b\right)=-a+b[/tex]
[tex]\implies 2x^2-9x+8-6x^2+5x+12[/tex]
Collect like terms:
[tex]\implies 2x^2-6x^2+5x-9x+8+12[/tex]
Combine like terms:
[tex]\implies -4x^2-4x+20[/tex]
Therefore, the difference of the two quadratic expressions is:
[tex]\large \boxed{-4x^2-4x+20}[/tex]
Help!! Question Solve. 2 1/3−1/2x=−2/3 Enter your answer in the box. x =
Answer:
x = 6
Step-by-step explanation:
2 [tex]\frac{1}{3}[/tex] - [tex]\frac{1}{2}[/tex] x = - [tex]\frac{2}{3}[/tex] ( subtract 2 [tex]\frac{1}{3}[/tex] from both sides )
- [tex]\frac{1}{2}[/tex] x = - [tex]\frac{2}{3}[/tex] - 2 [tex]\frac{1}{3}[/tex] = - 3 ( multiply both sides by - 2 to clear the fraction )
x = - 3 × - 2 = 6
x = 6
Jamal wants to save $54,000 for a down payment on a home. How much will he need to invest in an account with 8. 2% apr, compounding daily, in order to reach his goal in 5 years?.
Jamal need to invest $35838.77 in an account.
What is compound interest?
Compound interest, also known as interest on principal and interest, is the practice of adding interest to the principal amount of a loan or deposit.
As given Jamal wants to save $54,000 for a down payment on a home with 8.2% APR, compounding daily for 5 years.
The compound interest formula is,
[tex]A = P(1+\frac{r}{n})^n^t[/tex]
where,
A = final amount
P = initial principal balance
r = interest rate
n = number of times interest applied per time period
t = number of time periods elapsed
Here, A = $54000, r = 8.2% = 0.082, t = 5, n = 365
Plug the values in the above formula,
[tex]54000 = P(1+\frac{0.082}{365} )^(^3^6^5^)^(^5^)\\54000 = P(1.0002246575)^1^8^2^5\\54000= P(1.5067483068)\\P = \frac{54000}{1.5067483068} \\P = 35,838.766\\P = 35838.77[/tex]
Hence, Jamal need to invest $35838.77 in an account.
To know more about the compound interest, click on the link
https://brainly.com/question/24274034
#SPJ4
3(5a+4b)-3a+b I need help with this problem. I just am really confused
Answer:
12a + 13b
Step-by-step explanation:
3(5a + 4b) - 3a + b
multiply 3 by 5a and 4b
15a + 12b - 3a + b
Now add the a terms together and b terms together
15a - 3a + 12b + b
12a + 13b
Answer:
12a + 13b
Step-by-step explanation:
3(5a+4b)-3a+b
To simplify the expression, we need to distribute the 3 to all terms inside the parentheses
3*5a+3*4b-3a+b
15a+12b-3a+b
Combine like terms
12a + 13b
The value of "y" varies directly with "x" and
y = -8 when x = 20.
Find "y" if x = -4.
Now use the value you found for k, in y=kx to
solve for y when x is -4.
k=-²/
y =
Reduce to simplest form.
Answer:
y = 8/5
Step-by-step explanation:
Formula we use,
→ y = kx
Then the value of y will be,
→ y = kx
→ y = (-2/5) × (-4)
→ y = (-2 × -4)/5
→ [ y = 8/5 ]
Hence, the value of y is 8/5.
1 3/5+(-2 7/10)= what is this
Answer:
-1.1
Step-by-step explanation:
:)
pleace is my testing
The value of [tex]\sqrt{13}[/tex] is between 3 and 4 on the number line.
What is a number line?A horizontal line with evenly spaced numerical increments is referred to as a number line. How the number on the line can be answered depends on the numbers present. The use of the number is determined by the question that it corresponds to, such as when graphing a point.
[tex]\sqrt{13}[/tex] = 3.60
The value 3.6 is going to be between 3 and 4 because it is seen to be more than 3 while the value is also seen to be less than 4.
Hence the solution to the problem is the locations are 3 and 4.
Read more on number lines here: https://brainly.com/question/12399107
#SPJ1
a cylindrical can that has a capacity of 20 m 3 will be made. the metal used to build the top costs $10 per square meter while the bottom costs $20 per square meter. the material used for the side costs $15 per square meter. what are the dimensions that will minimize the cost?
The dimensions that will minimize the cost is
h= 2.82876 and r = 1.06078
Given That, C₁ = $10 and C₂= $10 and C₃ = $15
lets multiply the top and bottom, we get,
C₁ × C₂ = $10 ×$ 20 = $ 30
The total cost is,
C = (2πr²) C₁ + (2πrh)C₂
Here, r is base radius and h is the side length.
The volume is given by and the volume to 20 m³
∴ V = πrh² ⇒ πr²h = 20
So, h = 20/πr²
Now, the problem can be stated as
minimum h, r C(h, r) restricted to V(h, r) = V₀
Using language multiplier it reads,
L(h ,r,λ) = C(h, r) + λ [ V(h ,r) - V₀]
Solving for h, r, λ, we get,
h = ∛(2 C₁/C₂)² V₀ /π , r = ∛ (C₂/C₁) (v₀/2π)
λ = -2 ∛2πC₁C₂² /V₀
or, h= 2.82876 , r= 1.06078 with associated cost C= 424.214
We know that is a minimum because,
(C₀ V) = 2 ( C₁πr³ + C₂V₀) /r
d²/dr² (C₀V) (r) = 4 (C₁πr³+ C₂V₀)/ r³
and for the found solution has the value
d²/dr² (C₀V) (r) = 240 π > 0
Learn more about multiplier:
https://brainly.com/question/23536361
#SPJ4
Harold solved a division problem in the following way. Check his work. Is the solution valid. Why or why not?
Harold's solution for the given division problem is not valid because it is not accurate.
We are given two numbers. The numbers are given in scientific notation. The first number is 8.4×10^(-7). The second number is 3.6×10^(-2). We need to find the result of the division of the first number by the second number. Let the result of division be denoted by the variable "Q".
Q = [8.4×10^(-7)] ÷ [3.6×10^(-2)]
Q = [(8.4/3.6)×10^(-7 - (-2))]
Q = [(8.4/3.6)×10^(-7 + 2)]
Q = 2.33×10^(-5)
Harold solved this division problem by first rounding the numbers. His result is 2×10^(-5).
Harold's result differs a lot from the actual result. So, his result is not accurate. Hence, his solution is not valid.
To learn more about division, visit :
https://brainly.com/question/13263114
#SPJ1
Which equations represent circles that have a diameter of 12 units and a center that lies on the y-axis? Select two options. x2 + (y – 3)2 = 36 x2 + (y – 5)2 = 6 (x – 4)² + y² = 36 (x + 6)² + y² = 144 x2 + (y + 8)2 = 36
x² + (y – 3)² = 36 and x² + (y + 8)² = 36 are equations that represent circles having a diameter of 12 units and a center that lies on the y-axis
How to find the equations of circles?Given : x² + (y – 3)² = 36, x² + (y – 5)²= 6, (x – 4)² + y² = 36, (x + 6)² + y² = 144 and x² + (y + 8)² = 36
and x² + (y + 8)² = 36
The standard form of the equation of a circle is
(x-a)² + (y-b)² = r²
where (a, b) is the center and r is the radius
Let's compare the given equations with the standard equation:
x² + (y – 3)² = 36 can be written as:
(x-0)² + (y – 3)² = 6²
This has a center (0, 3), radius r = 6 and diameter = 12 units
x² + (y – 5)²= 6 can be written as:
(x-0)² + (y – 5)² = (√6)²
This has a center (0, 5), radius r = √6 and diameter = 2√6 units
(x – 4)² + y² = 36 can be written as:
(x-4)² + (y – 0)² = 6²
This has a center (4, 0), radius r = 6 and diameter = 12 units
(x + 6)² + y² = 144 can be written as:
(x+6)² + (y – 0)² = 12²
This has a center (6, 0), radius r = 12 and diameter = 24 units
x² + (y + 8)² = 36 can be written as:
(x+0)² + (y + 8)² = 6²
This has a center (0, -8), radius r = 6 and diameter = 12 units
Therefore, the equations that represent circles that have a diameter of 12 units and a center that lies on the y-axis are x² + (y – 3)² = 36 and x² + (y + 8)² = 36
Learn more about equation of a circle on:
https://brainly.com/question/29394840
#SPJ1