Ask question

Ask question

All categories

4 years ago

13

Combine like terms

1 answer:

Minchanka [31]4 years ago

5 0

15. Correct
16. Correct
17. Correct
18. Not visible
19. Correct if that is a +10 :)
20. Not visible

21. Not quite.
3y² + 3(4y<span>² - 2)
</span>3y² + 12y<span>² - 6
</span>15y<span>² - 6
</span>
22. Not visible

23. Not quite.
0.5(x^4 - 3) + 12
0.5x^4 - 1.5 + 12
0.5x^4 + 10.5

24. Not visible

You did good! :)

You might be interested in

Find the product. (0.5n^5)^2(10n^7)^3

never [62]

Answer:

250{n}^{31}

Step-by-step explanation:

$(0.5 {n}^{5} )^{2} (10 {n}^{7} )^{3} \\ = (0.5)^{2}{n}^{5 \times 2} \times (10)^{3} {n}^{7 \times 3} \\ = 0.25{n}^{10} \times 1000{n}^{21} \\ = 0.25 \times 1000 {n}^{10 + 21} \\ = 250{n}^{31}$

3 0

3 years ago

Read 2 more answers

A zoo has 15 emperor penguins The emperor penguins make up 30% of all the penguins at the zoo. How many penguins live at the zoo

r-ruslan [8.4K]

Let x + 15 = total penguins

15/ (x +15) = .30

15 = .30x + 4.5

.30x = 10.5

x = 35

Total penguins = 15 + 35 = 50

Double Check

15 / 50 * 100 = 30% Correct!!!

3 0

3 years ago

If you sleep an average of 7.5 hours each night, how many hours do you sleep in a year?

satela [25.4K]

Answer:

$\boxed{\sf 2737.5 \ hours}$

Step-by-step explanation:

The average is 7.5 hours of sleep each night.

There are 365 nights in 1 year.

$\sf Multiply \ the \ value \ by \ 365.$

$7.5 \times 365$

$2737.5$

5 0

3 years ago

Read 2 more answers

59 =7r+3 what is the answer

loris [4]

Answer:

r = 8

Step-by-step explanation:

59 = 7r + 3

Switch sides:

7r + 3 = 59

Subtract 3 from both sides:

7r = 56

Divide both sides by 7:

r = 8

4 0

3 years ago

Read 2 more answers

In your math journal, reflect on why cereal is currently packaged using a rectangular prism. What would be the advantages and di

Whitepunk [10]

A rectangular prism has a lot of volume. Volume is the amount of scpace the cereal can go.

4 0

4 years ago