Answers
Answer:
associative property of multiplication
Step-by-step explanation:
Related Questions
Adrian started a small business making custom t-shirts. His profit the first month was -$20. If this continues for the next 3 months, what would his profit be?
(-20)(3)
(-20)(-3)
(-20) + 3
(-20) - 3
Answers
Answer:
His profit would be (-20)*3 or -60 $
Step-by-step explanation:
First month profit = -20 $
if the next three months will be the same, then:
(-20)*3
-60 $
To solve the equation t² - t = 12 by factoring, you would use
(t - 4)(t + 3) = 0
t(t - 1) - 12 = 0
t(t - 1) = 12
Answers
To solve the given equation, t² - t = 12, by factoring, we will use (t + 3)(t - 4) = 0. The correct option is the first option
Solving an equation by factoringFrom the question, we are to determine how to solve the given equation by factoring
From the given information,
The given equation is
t² - t = 12
First, we will solve the equation by factoring
t² - t = 12
Transfer the constant to the other side
t² - t - 12 = 0
Factorize the expression
t² -4t + 3t - 12 = 0
t(t - 4) +3(t - 4) = 0
(t + 3)(t - 4) = 0
Then,
t + 3 = 0 OR t - 4 = 0
t = -3 OR t = 4
Hence, to solve the equation we will use (t + 3)(t - 4) = 0
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factor out using the gcf 1/5c + 4/5
Answers
The factored expression of 1/5c + 4/5 is 1/5(c + 4)
How to factor the expression?From the question, we have the following parameters that can be used in our computation:
1/5c + 4/5
From the above expression, we have the following highlights
Terms of the expressions = 1/5c and 4/5Number of terms = 2In the above terms, we can see that the denominator of the terms is 5
When this denominator is removed, we have
Expression = c + 4
This means that
GCF =1/5
So, the factored expression is 1/5(c + 4)
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Many bank accounts never go below zero. But some banks will allow a negative balance, at least for a short time, called an overdraft. It means someone has taken out, or 'drafted', more money than was in the account to begin with. Jose's account went into overdraft. To get back to a positive balance, he deposited money at a steady rate of $31.97 per week. After 3 weeks, he had $47.3 in the account. What was the balance when the account went into overdraft?
Answers
The balance when the account went into overdraft was -48.61
What is an overdraft?An overdraft occurs when something is withdrawn in excess of what is in a current account. For financial systems, this can be funds in a bank account.
Let x be the balance when the account went into overdraft
To get back to a positive balance he deposited money at a steady rate of $31.97 per week.
Amount deposited per week = $31.97
Amount deposited 3 weeks = $95.91
Now amount in account after 3 weeks =x+95.91
We are given that After 3 weeks, he had $95.91 in the account.
So, x+95.91=47.3
x= 47.3-95.91
x= -48.61
Hence The balance when the account went into overdraft was -48.61
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In a tudy of pain reliver, 50 people were given product A, and 38 experienced relief. In the ame tudy, 100 people were given product B, and 90 experienced relief
Answers
In linear equation, { 2x + 3y = 7.20 , { 4x + 2y = 8.80 the price per pound for oranges.
What in mathematics is a linear equation?
A linear equation is a first-order (linear) term plus a constant in the algebraic form y=mx+b, where m is the slope and b is the y-intercept.
Sometimes, the aforementioned is referred to as a "linear equation of two variables," where x and y are the variables.
Product B performed worse in the study because 32% failed to get relief with this product, whereas only 28% failed to get relief with Product A.
Working through this, the percentage who failed to find relief from product A is (25 - 18) / 25 = 28%. Doing the same type of calculation for product B, we can determine the percentage who failed to find relief as (50 - 34) / 50 = 32%. The description statement asks for which offered less relief, which we can find using the less than operator:
28% < 32%
Product A offered relief to all but 28% of the people, while product B offered relief to all but 32% of the people. Given that fewer people failed to find relief on product 28%, we can argue that more people did find relief on product A.
Given that the tests are both on multiples of 25 people, we can also see the percentages by multiplying the numerators and denominators to bring both to a scale of 100:
7/25 * 4/4 = 28% of product A users failed to find relief.
16/50 * 2/2 = 32% of product B users failed to find relief.
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Answers and Explain
Answers
The function g(x) is a piecewise function For x 4, 1 g(x) = |x + 1| and for
x 1, 3 g(x) = 2.
What are some rules for the transformation of functions?Suppose we have a function f(x).
f(x) ± d = Vertical upshift/downshift by d units (x, y ±d).
f(x ± c) = Horizontal left/right shift by c units (x - + c, y).
(a)f(x) = Vertical stretch for a > 0, vertical shrink a < 0. (x, ay).
f(bx) = Horizonatal compression b > 0, horizontal stretch for b < 0. (bx , y).
f(-x) = Reflection over the y-axis, (-x, y).
-f(x) = Reflection over x-axis, (x, -y).
From the graph, we can conclude that g(x) is a piecewise function.
When x is - 4, 1 g(x) = |x + 1|.
And when x is 1, 3 g(x) = 2, A constant function.
Now, g(-2) = | - 2 + 1| = 1.
g(1) = | 1 + 1| = 2.
g(4) = 2.
The value of x when g(x) = 3 is - 4.
The value of x when g(x) = 1 is (0, - 2) as both satisfy g(x).
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HELP! ASAP! 15 PTS!
the expression quantity negative three fifths times x minus 7 end quantity minus quantity negative 12 plus three tenths times x end quantity
1. negative nine tenths times x plus 5
2. negative nine tenths times x plus negative 5
3. three over 10 times x plus 5
4. three over 10 times x plus negative 19
Answers
The expression "quantity negative three and one fourth times d plus three fifths end quantity minus quantity two and seven eighths times d plus seven tenths end quantity" or (-3 1/4d + 3/5) - (2 7/8d + 7/10) is equivalent to "negative forty nine over 8 times d minus one tenth" or -49/8d - 1/10.
An algebraic expression is a number, variable, or the combination of both and operational symbols.
To determine the equivalent of the expression "quantity negative three and one fourth times d plus three fifths end quantity minus quantity two and seven eighths times d plus seven tenths end quantity" or simply (-3 1/4d + 3/5) - (2 7/8d + 7/10), combine all like terms and perform the necessary operations.
(-3 1/4d + 3/5) - (2 7/8d + 7/10)
⇒ -3 1/4d + 3/5 - 2 7/8d - 7/10
⇒ (-3 1/4 - 2 7/8)d + 3/5 - 7/10
⇒ (-13/4 - 23/8)d + 6/10 - 7/10
⇒ (-26/8 - 23/8)d - 1/10
⇒ -49/8 d - 1/10
Hence, the equivalent expression is "negative forty nine over 8 times d minus one tenth" or -49/8d - 1/10.
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18.
Kara solved the following absolute value equation incorrectly. Find and fix her
mistake. Explain what she did wrong.
|- 2x + 6 + 10 = 2
-10 -10
2x+6=-8
-6 -6
-2x = -14
-2
-2
X = 7
|- 2x + 61
{7, - 1}
= -8
2x+6=8
-6 -6
-2x = 2
-2 -2
x = -1
Answers
Kara erred when she answered the equation 2x + 6 = -8. Instead, she should have solved the equation 2x + 6 = 8 because it relates to the second situation (where -2x + 6 + 10 is smaller than 0).
Kara made a mistake when solving the equation |- 2x + 6 + 10| = 2. The correct steps to solve this equation are as follows:
First, we need to find the value of -2x + 6 + 10. To do this, we need to remove the absolute value bars by considering two cases:
a. If -2x + 6 + 10 is greater than or equal to 0, then the absolute value is equal to -2x + 6 + 10.
b. If -2x + 6 + 10 is less than 0, then the absolute value is equal to the negative of -2x + 6 + 10.
In the first case, we have -2x + 6 + 10 = 2. Solving this equation gives us x = -1.
In the second case, we have -(-2x + 6 + 10) = 2. Solving this equation gives us x = 7.
Therefore, the solution to the equation |- 2x + 6 + 10| = 2 is x = {7, -1}.
She made a mistake when she solved the equation 2x + 6 = -8. She should have solved the equation 2x + 6 = 8 instead, because this is the equation that corresponds to the second case (where -2x + 6 + 10 is less than 0).
As a result, Kara got the wrong value for x and included the incorrect solution {7, -1} in her final answer.
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Simplify, using the distributive
property.
18y - 13y = (18 - 13)y = [?] y
Answers
Using the distributive property we get 5y.
What is distributive property?
The operation on numbers that are available in brackets can be distributed for each number outside the bracket, according to the distributive property. It is one of the mathematical characteristics that is utilised the most. Commutative and associative qualities are the other two important features.
This property states that multiplying the total of two or more addends by a number will provide the same outcome as multiplying each addend by the number separately and then adding the results together.
Using the distributive property
18y - 13y = (18 - 13)y
(18-13) y
Subtract the numbers: 18-13=5
=5 y
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please help with this nothing hard help is appreciated
Answers
The dotted line represents that the region is strictly less than the equation of the line.
What are inequalities and their types?Inequality is a relation that compares two numbers or other mathematical expressions in an unequal way.
The symbol a < b indicates that a is smaller than b.
When a > b is used, it indicates that a is bigger than b.
a is less than or equal to b when a notation like a ≤ b.
a is bigger or equal value of an is indicated by the notation a ≥ b.
The dotted line shown in the graph and the yellow region described by the equation of a line is the region that is strictly less than the given line.
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Marely has a picture frame that is 6 inches long and 5 inches wide.
They have a second frame that has the same length, and a width
that is 2 times as much as the first one.
What is the area of the second frame?
Answers
Answer:
60 square inches
Step-by-step explanation:
The width of the second frame is 2 times the width of the first frame, or 2 * 5 inches = 10 inches.
The area of the second frame is its length multiplied by its width, or 6 inches * 10 inches = 60 square inches.
Please help:
the congruence statements ∆ABC ≅ ∆DEF, ∆ABC ≅ ∆EFD and ∆ABC ≅ ∆FDE all are valid. what must be true about ∆ABC and ∆DEF
Answers
For example, we know that angle B is congruent to angle E (first congruency ABC = DEF) because they’re both the second letter. Keep on doing this and you’ll find out all the angles are equal to one another.
We also know that the sides are equal because it says the triangles are congruent.
Write a pattern rule that uses algebra to describe each pattern. a) 7, 14, 21, 28, 35, 42,
HELP!!!!
Answers
Answer:
as u can see the pattern is going up by 7.
Step-by-step explanation:
Solve the equation 3x+1=4x-8 for x.
Answers
Answer:
ok
Step-by-step explanation:
3x+1=4x-8= -6
x=-6
this is the x
I hope you have understand
the dilation of a line segment creates a _[blank]_ line segment, provided the center of dilation is not on the line segment and the scale factor does not equal 1.
Answers
The required scale factor for the given line segment is 2.
What is line segment?
In math, a line segment is limited by two unmistakable focuses on a line. Or on the other hand we can say a line portion is essential for the line that interfaces two focuses. A line has no endpoints and broadens endlessly in both the bearing yet a line fragment has two fixed or positive endpoints.
Explain scale factor:Scale factor is the number used to duplicate one item by to get another item that appears to be identical however is an alternate size. It makes a precise duplicate just bigger or more modest than the first. Scale Variable increases the image or item similarly as though you broadened or shrank it on a copier.
According to question:We have,
QS : QS' = 4 : 8 = QU : QU' = 5 : 10 = 1 : 2
Then the scale factor is of the dilation is 2 (magnification)
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The interior angles in a regular polygon sum to 1620°.
How many sides does the polygon have?
Answers
Answer:
the answer to your question is 11
Step-by-step explanation:
1620÷180= 9
9+2=11
A right triangle has legs of 30 inches and 40 inches whose sides are changing. The short leg is increasing by 5 in/sec and the long leg is shrinking at 7 in/sec. What is the rate of change of the hypotenuse?
Answers
That is a change in the hypotenuse's length of -2.6 inches per second.
What in math is a rate?
A rate is a unique ratio where the two words are expressed in several units. For instance, the price is 69 for 12 ounces if a 12-ounce can of maize costs 69. This is not a proportion of two comparable units, like shirts. This ratio compares two dissimilar units: ounces and cents
h = sqr(b^2 + a^2), b=30, a=40, b'=-5, a'=-7
h' = [(1/2)/sqr(b^2+a^2)](2bb' + 2aa') = sqr(30^2+40^2)(30(5)+40(-7)
= (150-280)/sqr2500 = (-130)/50 =-- -13/5 = -2.6 inches per second
2.6 inches are lost from the hypotenuse every second.
Check the response by observing what transpires in one second.
30 to 35 on the short leg
greater leg descends from 40 to 37
From 50 to 47.4 is the hypotenuse
In one second, 50-47.4 equals a 2.6 reduction. That is a change in the hypotenuse's length of -2.6 inches per second.
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show steps / why your answer is correct please which equation defines the graph of y=x3 after it is shifted vertically 5 units down and horizontally 4 units left
Answers
The equation that defines the graph y=x³ after it is shifted vertically 5 units down and horizontally 4 units left is y =( x + 4 )³- 5.
What is a graph?A function is truly equal to its graph in the modern mathematical foundations and typically in set theory. However, it is frequently helpful to think of functions as mappings, which include not just the relationship between input and output but also the sets that make up the domain and codomain. For instance, it is important to consider the codomain while determining whether a function is onto (surjective) or not.
For k=- 5, y=f(x) + k represents a vertical shift down.
For h=4, the horizontal shift left is y=f(x+h).
Therefore, the equation that defines the graph y=x³ after it is shifted vertically 5 units down and horizontally 4 units left is y =( x + 4 )³- 5.
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A small country emits 150,000 kilotons of carbon dioxide per year. In a recent global agreement, the country agreed to cut its carbon emissions by 5.4% per year for the next 14 years. In the first year of the agreement, the country will keep its emissions at 150,000 kilotons and the emissions will decrease 5.4% in each successive year. How many total kilotons of carbon dioxide would the country emit over the course of the 14 year period, to the nearest whole number?
Answers
Answer:
72891
Step-by-step explanation:
150,000 is the base number
In the first year it will be the same, so it'll only count 13 years
the equation is: 150,000(0.946)^x
how:
150,000(100%-5.4%)^x
150,000(94.6%)^x
150,000(0.946)^x
*it's 100%-5.4% because that's that's remaining each year if it's decreasing by 5.4%. you would convert the percentage into decimals because it's decreasing by a percentage, not a whole number
150000(0.946)^13
*13 is the number of years, so it's x
72891.356467
3. Marcus Hatfield earns an annual salary of $43,500 working for a natural
history museum. He is single, and his exemptions total $2,000. He pays
$954.50 in state taxes each year. What is the tax rate for his state?
Answers
The Rate of Tax for his state is 2.3%.
What is tax rate?
The ratio at which a business or individual is taxed in a tax system is known as the tax rate. Statutory, average, marginal, and effective tax rates are some of the ways that are used to present them. The terms inclusive and exclusive can be used to present these rates when applied to a tax base.
Annual Salary of Marcus Hatfield is = $43500
His Exemption from the tax is = $2000
He pays tax on the remaining amount i.e.
$43500 - $2000 = $41500.
His contribution toward the tax is $ 954.50,
Let the Rate of tax is x, thus
[tex](\frac{X}{100} *41500) = 954.50\\ x = \frac{95450}{41500} \\x = 2.3[/tex]
Thus, the rate of tax is 2.3% of his salary.
Hence, the Rate of Tax for his state is 2.3%.
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0.23 was rounded to 2 significant figures.
What is the upper bound?
Answers
Answer: 0.235
Step-by-step explanation:
To round up you need a number = 5 or > 5
So to round to 2 sig fig, the number will have to be 0.235
Please help with this problem!!
Functions f, g, and h are defined as follows: () = − 2, () = 2^2 − 1, and ℎ() =
2^3 + 4.
(a) Find the inverse of function g(x).
(b) Find f(h(-2))
(c) Find g(f(5))
Answers
Answer:
Step-by-step explanation:
f −1 (x)= 3x−2
f, start superscript, minus, 1, end superscript, left parenthesis, x, right parenthesis, equals, start fraction, x, minus, 2, divided by, 3, end fraction.
In the picture below.
Answers
Answer:
∠ GFC = 70°
Step-by-step explanation:
∠ BFE and ∠ CBF are alternate angles and are congruent, that is
∠ BFE = 37°
∠ BFE , ∠ BFC and ∠ GFC lie on a straight line and sum to 180° , then
37° + 73° + ∠ GFC = 180°
110° + ∠ GFC = 180° ( subtract 110° from both sides )
∠ GFC = 70°
I think this is an elimination problem:
12x-20y=-32
x+20y=10
Answers
Answer:
Yup I think so to
Step-by-step explanation:
Answer:
Yes, it is an elimination problem.
x = -1.69230769
Step-by-step explanation:
You can eliminate 20y by adding both equations together.
Then, you will get 13x = -22.
Divide by 13 on both sides to get x= -1.69230769
Sarah placed 3 identical wooden boards end - to - end. The length is 1.86 m. What is the length of each board?
Answers
Answer:
0.62
Step-by-step explanation:
1.86 divided by 3 is 0.62
CAN ANYONE PKEASE HELP MEEEEEE
Answers
Answer: y = 10(x) + 56
Step-by-step explanation:
y=10(4) + 56
y = 40 + 56
y = 96
Answer:
1a. y = 10 x + 16
1b. 16
2a. y = 600x + 1500
2b. $8700
Step-by-step explanation:
1a. A linear model represents a relationship between two variables as a straight line. In this case, we want to represent the relationship between the number of hours a canoe is rented for and the total cost of the rental, including the deposit.
We can create a linear model by using the equation y = mx + b, where y is the total cost, x is the number of hours the canoe is rented for, m is the slope of the line (the rate at which the cost changes per hour), and b is the y-intercept (the total cost when x is 0).
Since the total cost includes a non-refundable deposit, we need to add this to the y-intercept. The deposit is not dependent on the number of hours the canoe is rented for, so it is not represented in the slope.
Based on the information given, the total cost is $56 when the canoe is rented for 4 hours, and the rental fee is $10 per hour. We can use these values to solve for the y-intercept and the slope:
y = mx + b
56 = (10) (4) + b
56 = 40 + b
b = 56 - 40
b = 16
So the linear model representing the relationship between the number of hours a canoe is rented for and the total cost of the rental, including the deposit, is: y = 10 x + 16
1b. We know that the total cost is $56 when the canoe is rented for 4 hours, and the rental fee is $10 per hour. We can use these values to solve for the y-intercept, which represents the non-refundable deposit:
y = (10) (4) + b
56 = 40 + b
b = 56 - 40
b = 16
So the non-refundable deposit is $16. This means that the total cost of the rental, including the deposit and the hourly fee, is $56.
2a. We can create a linear model by using the equation y = mx + b, where y is the total cost, x is the number of solar heaters produced, m is the slope of the line (the rate at which the cost changes per heater), and b is the y-intercept (the total cost when x is 0).
Based on the information given, it costs $7500 to produce 10 solar heaters, and it costs $13,500 to produce 20 solar heaters. We can use these values to solve for the y-intercept and the slope:
y = mx + b
7500 = m(10) + b
13500 = m(20) + b
Subtracting the second equation from the first equation gives:
-6000 = m(10) - m(20)
6000 = m(20) - m(10)
6000 = m(20 - 10)
6000 = m(10)
m = 6000/10
m = 600
Substituting this value for m in either of the original equations and solving for b gives:
7500 = (600)(10) + b
7500 = 6000 + b
b = 7500 - 6000
b = 1500
So the linear model representing the relationship between the number of solar heaters produced and the total cost of production is:
y = (600) x + 1500
According to this model, the total cost of producing 15 solar heaters would be $10,500.
2b. To find the total cost of producing 12 solar heaters, we can use the linear model that represents the relationship between the number of solar heaters produced and the total cost of production:
y = (600) x + 1500
Where y is the total cost, x is the number of solar heaters produced, m is the slope of the line (the rate at which the cost changes per heater), and b is the y-intercept (the total cost when x is 0).
To predict the total cost of producing 12 solar heaters, we can substitute 12 for x in the equation:
y = (600) (12) + 1500
y = 7200 + 1500
y = 8700
According to this model, the total cost of producing 12 solar heaters would be $8700.
............ i need help past due
Answers
Answer from left to right: 48, 80, 4.5, 160
Step-by-step explanation:
Pls help 8th grade math
Answers
Answer: 27.5, B
Step-by-step explanation:
its a right angled trianalgle,
==> (30)^2= ((12)^2)+(x^2)
==> x^2= 900-144
==> x^2 = 765
==> x=(756)^(0.5)
==> x=27.49
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pls help due tomm!! super easy
Answers
Answer:8a<8b
Step-by-step explanation:
8a<8b
Im having trouble..
i keep on getting this question wrong and i need help with the answer, i need to get a high score on this assignment so i can move on
Answers
Answer:
The rate of change is also called the slope. The slope is -2
Step-by-step explanation:
Find 2 points on the line. I am going to use the points (0,5) and (4, -3). the rate is the change in y over the change in x. From the two points, my values are -3 and 5. The x values are 4 and 0.
To find the change, I subtract the y values and the x values.
[tex]\frac{-3-5}{4-0}[/tex] = [tex]\frac{-8}{4}[/tex] = -2
Answer: -2
Step-by-step explanation: The rate of change is also known as the slope!
To find the slope, you need to find the rise/run.
Let's pick two points ( 0,5) ( 4, -3)
You see that the y goes down by 8 and the x goes right by 4, so the rate of change is -8/4 = -2
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