Which step did emily make an error in?

Mathematics

1 answer:

alexandr402 [8]3 years ago

8 0

Answer:

E. Step 3

Step-by-step explanation:

Step 2:

2x + 18 = 4x + 28 + 2

Step 3:

2x + 18 = 4x + 26

She subtracted instead of adding (see bold and underline)

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There are 75 students in the eight grade 45 of those take a music class. the rest of the students have art.what percent Take art

damaskus [11]

Answer:

40%

Step-by-step explanation:

To find the number of students that take art, we need to find the difference between the number of students in the whole grade and the number of students who take art, that is 75 and 45, respectively. The answer to that is 30 students. Next, we find what percent represents the number of students who take art in relation to the total number of students in the grade. This can be represented by the fraction 30/75. When you simplify, you get 0.4 which is also known as 40%. Therefore 40% of the students take art. Hope this helps:)

7 0

3 years ago

What is the area of the piece of red paper after the hole for

MakcuM [25]

Answer:

$\large\boxed{\large\boxed{47unit^2}}$

Explanation:

The complete question is:

A hole the size of a photograph is cut from a red piece of paper to use in a picture frame.

On a coordinate plane, 2 squares are shown. The photograph has points (-3, -2), (- 2, 2), (2, 1), and (1, -3). The red paper has points (- 4, 4), (4, 4), (4, -4), and (-4, -4).

What is the area of the piece of red paper after the hole for the photograph has been cut?

<h2>Solution</h2>

The area of the piece of redpaper after the hole has been cut is equal to the area of the big square less the area of the small rectangle.

1. Area of the big rectangle

Vertices: