1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
mash [69]
4 years ago
15

4. Explain and correct the error made by a student who simplified this expression.

Mathematics
1 answer:
Fiesta28 [93]4 years ago
3 0

Answer:

I notice that the first equation has a 7x, term and the second equation has a -7x term. These terms will cancel if we add the equations together—that is, we'll eliminate the the x terms:

Step-by-step explanation:

2y+7x= -5 + 5y-7x=12

You might be interested in
What is x and y (use substitution?) 5x+3y=38 and y=3x+8?
Vika [28.1K]

Answer:

x = 1 and y = 11

Step-by-step explanation:

To start, let's substitute in y into the first equation. We will get 5x + 3 (3x + 8) = 38. Now, distribute the 3 in the 2nd term to get 5x + 9x + 24 = 38. Add like terms to get 14x + 24 = 38, and subtract 24 from both sides to get 14x = 14. Now, divide both sides by 14 to get x = 1. Plug this back in to get that y = 11.

6 0
3 years ago
The smaller pyramid has a volume of 52 inchesWhat
Leto [7]

Answer:see the picture to better understand the problem

we know that

scale factor=12/8----> 1.5

volume larger pyramid=scale factor³*volume smaller pyramid

scale factor=1.5

volume smaller pyramid=52 in³

so

volume larger pyramid=1.5³*52-----> 175.5 in³

the answer is

175.5 in³

Step-by-step explanation:

here is your answer to your work plz let me know if your answer is right and plz rate me the most brainlest

6 0
3 years ago
Find missing angels plssss help me
professor190 [17]
2 is 60, 1 is 60, 3 is 55, 4 is 120
4 0
3 years ago
Read 2 more answers
7. Write an inequality that matches the graph shown.
IrinaK [193]

Answer:

To make an inequality its in the part that is shaded so

Step-by-step explanation:

(-2,-2) (-4,1) ETC

8 0
3 years ago
You got a job selling books at the mall. You are paid $70 per day plus $2 for each book you sell. Which recursive formula models
lina2011 [118]

Answer:

f(x) = 70 + 2x

Step-by-step explanation:

In this problem, we first need to consider how much we get per day.

$70 is our constant.

$2 will be dependent on the number of books sold.

Here 'x' will represent the number of books sold.

f(x) = 70 + 2x

Now let's try it out.

Let's say we sold 0 books

f(0) = 70 + 2(0) = 70

This shows us that we only get our constant pay.

Now let's try for 1 or more books.

f(1) = 70 + 2(1) = 72

f(2) = 70 + 2(2) = 74

So the recursive formula f(x) = 70 + 2x is a good formula to model the situation.

7 0
4 years ago
Read 2 more answers
Other questions:
  • What does y=8(x+1)-12 equal?
    15·1 answer
  • What is the common ratio of the following sequence? 80, 20, 5, ... <br> A) -4 <br> B) 1/4 <br> C) 4
    13·1 answer
  • 2. A line passes through (1, -5) and (-3, 7).
    7·1 answer
  • StartFraction 2 Over 3 EndFraction minus x plus StartFraction 1 Over 6 EndFraction equals 6 x. – x + = 6x
    7·1 answer
  • Please answer this correctly
    13·1 answer
  • Point C is the center of the circle. angle ACB measures 49. What is the of arc ADB
    12·1 answer
  • The endpoints of a diameter of a circle are (-1,3) and (3,1). Find the center and radius of the circle.
    13·1 answer
  • T - 14 = -3<br>what is t​
    12·1 answer
  • Will you help me plz
    7·1 answer
  • You deposit your money into a bank account that pays 2% interest per year. If you
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!