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3 years ago

Which expression is equivalent to -30 - 8x + 50 - 2x?

Mathematics

2 answers:

Makovka662 [10]3 years ago

6 0

-10x + 20 should be the right answer.

katen-ka-za [31]3 years ago

3 0

Answer:

20-10x

Step-by-step explanation:

-30+50=20

-8+ (-2x)= -10x

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In the library at lenape elmentary school, there are 3/8 as, many fiction books as there are nonfiction books. There are 44 book

N76 [4]

Answer:

12 fiction books.

Step-by-step explanation:

Let b represent number of non-fiction books.

We have been given that in the library at Lenape elementary school, there are 3/8 as many fiction books as there are nonfiction books. So number of fiction books would be $\frac{3}{8}x$ .

We are also told that there are 44 books in school library. We can represent this information in an equation as:

$x+\frac{3}{8}x=44$

Let us solve for x.

$\frac{8x}{8}+\frac{3}{8}x=44$

$\frac{8x+3x}{8}=44$

$\frac{11x}{8}=44$

$\frac{11x}{8}\cdot \frac{8}{11}=44\cdot\frac{8}{11}$

$x=4\cdot 8$

$x=32$

Therefore, there are 32 non fiction books in the library.

Number of fiction books would be $\frac{3}{8}x\Rightarrow \frac{3}{8}*32=3*4=12$

Therefore, there are 12 fiction books in the library.

5 0

3 years ago

What is |32|? <br><br> PLEASE HELP!!!

fredd [130]

Answer:

the absolute value of 32 ( |32| ) is 32

Step-by-step explanation:

absolute value is asking how far away a number is from 0. so, 32 is 32 numbers away from 0.

hope this helps!

3 0

3 years ago

Read 2 more answers

The number of pieces of popcorn in a large movie theatre popcorn bucket is normally distributed, with a mean of 1515 and a stand

Murrr4er [49]

Answer: 99.7%, Im pretty confident about that. Im taking the test right now.

Step-by-step explanation:

3 0

3 years ago

In Scarlett's grade, 1/5 of the students have a sister. Of the students who have a sister, 1/4 also have a brother. What fractio

My name is Ann [436]

Answer:

1/20

Step-by-step explanation:

In Scarlette grade 1/5 of the students have a sister.

Of the students who have a sister 1/4 also have a brother

Therefore fraction if students in Scarlet's grade who had both brothers and sister can be calculated as follows

= 1/5 ×1/4

= 1/20

3 0

3 years ago

1.5 tons. To make the car faster, you replaced the steel body with carbon-fiber and reduced the weight by 300 pounds. How much d

Brums [2.3K]

1 ton = 2,000 pounds
1.5 tons = 3,000 pounds

After reducing the weight by 300 pounds,
the car now weighs

(3,000 pounds) - (300 pounds) = 2,700 pounds .

(that's 2,700/2,000 = 1.35 tons)

4 0

3 years ago