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yKpoI14uk [10]
3 years ago
7

Help plz and check just to make sue what is this

Mathematics
1 answer:
padilas [110]3 years ago
3 0

use cross  products to solve

5* (n-9) = 8*n

distribute

5n-45 = 8n

subtract 5n from both sides

-45 = 3n

divide both sides by 3

-15 = n

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Explain why 256 + 4 is equivalent to (200 + 4) + (40+4) + (164)​
laiz [17]

The expression 256 + 4 is equivalent to (200 + 4) + (40+4) + (16+4) according to distributive and commutative property of addition.

Given the expression 256 + 4. This can be solved using the partial sum expressed as:

256 + 4

256 + 4

= (200 + 40 + 16) + 4

According to the commutative property, A+B = B+A

The arrangement does not affect the result. Hence;

  • (200 + 40 + 16) + 4 = 4 +  (200 + 40 + 16)

Using the distributive law;

  • 4 +(200 + 40 + 16) = (200 + 4) + (40 + 4) + (16 + 4)

Hence the expression 256 + 4 is equivalent to (200 + 4) + (40+4) + (16+4) according to distributive and commutative property of addition.

​Learn more on  partial sum  here: brainly.com/question/6958503

4 0
2 years ago
-8.5÷3.4 how to solve this step by step
sertanlavr [38]
You have to move both decimals over and then divide. So the answer is 25.

3 0
3 years ago
What is 3 ÷ 2\5 pls answer dis<br>​
Anna35 [415]

Answer:

15/2

Step-by-step explanation:

when dividing by fractions, we "flip and multiply"-- therefore:

3 ÷ 2\5 = 3 x 5/2

3 x 5/2 = 15/2

7 0
2 years ago
Final time i ask for help
Ber [7]
3x+11=65
3x=54
x=18

180-(35+65)=y
180-100=y
80=y
5 0
2 years ago
Chelsea made 15 of the 28 recipes she downloaded from the Internet. What percent of the recipes did she make?
Elanso [62]
Hello there!

28 recipes .......> 100%
15 recipes .......> x%

Cross multiply
28x = 15*100
28x = 1500
x= 1500/28
x ≈ 53.5%

She makes 53.5% of the recipes.


I hope that helps!
5 0
3 years ago
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