Mathematics College

A claim is made that expression 1 and expression 2 are equivalent. A student is asked to provide proof that the claim is true.
Expression 1: −3(2x−6y)−2x
Expression 2: 18y−8x
Which of the following options could the student use to provide proof that the two expressions are equivalent? Select TWO that apply.
A
They could multiply expression 2, (18y−8x) by −3 and then compare their result to expression 1.

B
For expression 1, they could multiply (2x−6y) by −3 and then subtract 2x from −6x to combine terms. They then can compare their result to expression 2.

C
For expression 1, they could multiply (2x) by −3 and then subtract 2x from −6x to combine terms. They then can compare their result to expression 2.

D
They could substitute in the values x=1 and y=2 into both expressions, solve the expressions, and determine if both expressions result in the same value.

E
They could substitute in the values x=1 and y=1 into expression 1 and x=2 and y=2 into expression 2. Then, they could solve both expressions and determine if both expressions result in the same value.

Answers

Answer 1

Answer:

The answer is B

Answer 2

Answer:

The answer is B and A

Step-by-step explanation:

Related Questions

Does seth or briana walk faster

Answers

Answer:

PLEASE GIVE BRAINLIST

you need to be more pacific on your question so that can other people can help you.

HOPE THIS HELPED

Is the decimal form of 19/3 a rational number?

Answers

Answer:

yes it is because it can be written in fraction form

Joey earned $10 for every car he washed on Friday. If he earned $190, how many cars did he wash?

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Answer:

Step-by-step explanation:

please help help help help

Answers

Answer:

2(5+4(8+1)) - 4²

=82 + 16

=66

Solve inequality.
|3n-2|-2<1

Answers

[tex]\text{Hello there! :)}[/tex]

[tex]\boxed{-1/3 < n < 5/3}[/tex]

[tex]|3n - 2| - 2 < 1[/tex]

[tex]\text{Begin simplifying by adding 2 to both sides:}[/tex]

[tex]|3n - 2| < 3[/tex]

[tex]\text{ Solve for the positive and negative solutions:}[/tex]

[tex]3n - 2 < 3\\\\3n < 5\\\\n < 5/3[/tex]

[tex]-(3n - 2) < 3\\\\\text{Switch sign when dividing by a negative:}\\\\3n - 2 > - 3\\\\3n > - 1\\\\n > -1/3[/tex]

[tex]\text{Therefore, the solutions for the inequality are:}\\\\-1/3 < n < 5/3[/tex]

Which graphs display a directly proportional relationship? Check all that apply.

Answers

Answer:

A, C, and D

Could you please give me Brainliest?

Answer:

answers are a c d

Step-by-step explanation:

look at the lines that' how you find your answer

If
3x^2+ 9x + 11
X – 1 =
3x2 + 3x + a + 23
X-1
what is the value of a?

Answers

Answer:

a = -6 - 6x + 3x^2

Step-by-step explanation:

Brett gets 5.3% Commission on all of his sales. If he makes $5500 in a week,
what is his commission for the week

Answers

Answer:

291.5

Step-by-step explanation:

5500×5.3

that's pretty much it lol

-7 (8s + 9f) if s = -5 and f = -3

Answers

Answer:

469

Step-by-step explanation:

Substitute -5 and -3 into the equation:

-7(8 (-5) + 9 (-3)

-7(-40 - 27)

-7(-67)

+469

how many dollars will you get if you change

Answers

Answer:

Depends on what is the problem!

Lily and Layla are bakers and were having a contest to see who could bake more cupcakes in 8 hours. Lily can bake 7 cupcakes in 10 minutes. Layla can bake 8 cupcakes in 12 minutes. The next day, Lily sold LaTeX: \frac{2}{3}2 3 of her cupcakes at $1.29 each. Layla sold 75% of her cupcakes at $0.89 each. Who made more money?

Answers

Answer:

5.000 and dont say its wrong because whats the point of asking a question you already know?

Step-by-step explanation:

graph y = -1/4x + 6

Answers

Answer: SEE BELOW

If you need further explanation about how to graph, please let me know.

Hope this helps!! :)

this is the answerisjsjdndjdn

Apply the distributive property to create an equivalent expression. 6(5x - 3) =

Answers

Answer:

30x-18

Step-by-step explanation:

(6)(5x+−3)

=(6)(5x)+(6)(−3)

=30x-18

Brian finished his English assignments in 1/3 hours. Then he completed his math assignments in 1/5 hours. What was the total number of Time Brian spent doing these two assignments

Answers

Answer: 8/15

Step-by-step explanation: find the LCD which is 15 in this case, then multiply 1/3 by 5/5 which equals 5/15. then multiply 1/5 by 3/3 which equals 3/15 then add them together =8/15

Jay's father is twice as old as jay. In 20 years Jay will be two-thirds as old as his father. How old is each now?

Answers

Well take this for an example

Answer:

the answer is 2

Step-by-step explanation:

The gestation period of humans (266 days) is what percent longer than the gestation period of pigs (115 days).

Answers

Answer:

56.8%

Step-by-step explanation:

(115/266)* 100 = 43.2%

which means 115 is 43.2% of 266

so,

The gestation period for Humans is 56.8% (100 - 43.2) longer than of pigs

I hope this is correct!

Which of the following statements is false? A. If a number is a natural number, then it is rational. B. If a number is a whole number, then it is rational. C. If a number is a fraction, then it is rational. D. If a number is an integer, then it is irrational.

Answers

Answer:d bc its integers a rational not irrational

Step-by-step explanation:

Your welcome

Answer:

Step-by-step explanation:

i got it right

Choose the algebraic expression that represents the area of a triangle that has a base 4 inches less than 5 times wider than the height.
a (1/2)(5h)(h – 4)
b (1/2)(5b + 4)(b)
c (1/2)(5h – 4)(h)

Answers

Answer:

c (1/2)(5h – 4)(h)

Step-by-step explanation:

Area of a triangle = 1/2 × base × height

Let

Height of the triangle = h

Base 4 inches less than 5 times wider than the height.

Base of the triangle = 5h - 4

Area of a triangle = 1/2 × base × height

= (1/2)(5h-4)(h)

The algebraic expression that represents the area of a triangle that has a base 4 inches less than 5 times wider than the height is (1/2)(5h-4)(h)

Option C is the correct answer

Answer:

Step-by-step explanation:

i had this same question a while ago

Which equation is equivalent to x+5=12

Answers

Answer:

x=7

Step-by-step explanation:

Can someone please help, ty!!

Answers

Your answer is 0 by the way

5. A turtle dives towards deeper water at a rate of 8 inches per second. It continues for a total of 16 seconds.
Which expression represents this situation?
A 16(-8)
B. -16(-8)
C. 16 / 8 ( / means division)
D. 16 / (-8) ( / means division)

Answers

Answer: B

Step-by-step explanation:

To find out how far the turtle went in 16 seconds you have to multiply 16 and -8

Answer:

I have the same question on test and answer is B

Step-by-step explanation:

( 5 - 2i)2 Write answer in standard form a +bi. Remember you can not have i2 in your answer it is a number.

Answers

Answer:

Step-by-step explanation:

(5 - 2i)^2

25 - 10i - 10i + 4I^2

25 -20i - 4

21 - 20i

Sarah plans to sell decorative signs at an upcoming craft market. If it costs her $3.50 to make each sign, and she paid a one-time fee of $185 to rent a booth at the market. If Sarah sells each sign for $15.75, how many signs will she need to sell for her expenses to be no more than her earnings?

Answers

Answer:

I need that answer too

Step-by-step explanation:

Identify which line from the graph the following right triangles could lie on.

Answers

Answer:

Step-by-step explanation:

Slope of line A = [tex]\frac{\text{Rise}}{\text{Run}}[/tex]

= [tex]\frac{9}{3}[/tex]

= 3

Slope of line B = [tex]\frac{9}{6}[/tex]

= [tex]\frac{3}{2}[/tex]

Slope of line C = [tex]\frac{6}{8}[/tex]

= [tex]\frac{3}{4}[/tex]

5). Slope of the hypotenuse of the right triangle = [tex]\frac{\text{Rise}}{\text{Run}}[/tex]

= [tex]\frac{90}{120}[/tex]

= [tex]\frac{3}{4}[/tex]

Since slopes of line C and the hypotenuse are same, right triangle may lie on line C.

6). Slope of the hypotenuse = [tex]\frac{30}{10}[/tex]

= 3

Therefore, this triangle may lie on the line A.

7). Slope of hypotenuse = [tex]\frac{18}{24}[/tex]

= [tex]\frac{3}{4}[/tex]

Given triangle may lie on the line C.

8). Slope of hypotenuse = [tex]\frac{21}{14}[/tex]

= [tex]\frac{3}{2}[/tex]

Given triangle may lie on the line B.

9). Slope of hypotenuse = [tex]\frac{36}{24}[/tex]

= [tex]\frac{3}{2}[/tex]

Given triangle may lie on the line B.

10). Slope of hypotenuse = [tex]\frac{48}{16}[/tex]

= 3

Given triangle may lie on the line A.

PLEASE HELP ASAP IM SPENDING POINTS THAT TOOK ME SO LONG TO GET How much time will Alex need to walk to his school, which is 2 1 4 miles away from his house, if he would walk with the speed of 2 mph

Answers

Answer:

1 1/8 hours

Step-by-step explanation:

The relationship between time and speed and distance is ...

time = distance/speed

Then Alex's time is ...

time = (2.25 mi)/(2 mi/h) = 1.125 h

It will take Alex 1 1/8 hours to walk to school at 2 mph.

Enter an algebraic expression to model the given context. Give your answer in simplest form.

The price s of a pair of shoes plus 6% sales tax.

The algebraic expression is

Answers

(s)+(s×0.06)=t

t is the total

s is the shoes

An owner of a home in the Midwest installed solar panels to reduce heating costs. After installing the solar panels, he measured the amount of natural gas used y (in cubic feet) to heat the home and outside temperature x (in degree-days, where a day's degree-days are the number of degrees its average temperature falls below 65° F) over a 23-month period. He then computed the least-squares regression line for predicting y from x and found it to be ŷ = 84 + 18x. How much, on average, does gas used increase for each additional degree-day?

Answers

Answer:

Step-by-step explanation:

In the linear regression equation y=a+bx, slope coefficient b represents average unit increases in y variable due to unit increase in x variable.

In the given equation ŷ = 84 + 18x, b=18 represents average unit increases in gas used due to unit increase in degree day.

Hence,on average, gas used increase by 18 for each additional degree-day.

I NEED HELP ASAP. I need someone who can help with the rest of the questions

Answers

Answer:

(6,0)

Step-by-step explanation:

X-value:

10-8=2

8-2=6

Y-value

4-2=2

2-2=0

Jack bought 5.94 pounds of beef for dinner. What is the first step in rounding this number to the nearest tenth? What is the next step? What is 5.94 rounded to the nearest tenth? The first step in rounding to the nearest tenth is to look at the digit to the right of the tenths place. What is the next step?

Answers

Answer:

Step-by-step explanation:

Answer:

5.94 rounded up to the neares tenth is 10

Step-by-step explanation:

logic also I don't think there is a next step

HELP PLZ AND.... HIIIII!

Answers

Answer:

0.002 meters per second

Answer: 0.0002 meters per second

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