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kaheart [24]
4 years ago
7

How do you divide -5.2 by 3.9? (step by step) please my test is tomorrow

Mathematics
1 answer:
Arte-miy333 [17]4 years ago
3 0
I would suggest converting to fractions. -5.2 is equal to -52/10, and 3.9 is equal to 39/10. To divide -52/10 by 39/10, multiply -52/10 by the reciprocal of 39/10 (which is 10/39).
So you would set this up like:
-52      10
----- x ----- =
10       39

cancel out the 10s. just divide-52 by 39, and you have your answer. 
or divide 52 by 39, just know that the answer will be negative.
52/39=1.33, or 4/3, or 1 1/3.
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What is 3x-9=7y in standard form?
Sophie [7]
If in standard form you mean slope intercept form, then you are looking to create an equation that looks like this:

y = mx + b

So you need to move around the numbers whilst keeping both sides equivalent.

3x - 9 = 7y
7y = 3x - 9
y = (3x)/7 - 9/7

Your answer should look like this:

y = (3x)/7 - 9/7

If this is not what you meant by standard form please comment and I will see if I can adjust the answer.
8 0
3 years ago
What is the value of x to the nearest tenth? <br> A)7.2 <br> B)4.8 <br> C)12.0<br> D)9.2
Anika [276]

Answer:

x = 7.2

Step-by-step explanation:

a² + b² = c²

x² + (19.2/2)² = (24/2)²

x² + 9.6² = 12²

Subtract 9.6² from both sides

x² = 12² - 9.6²

x² = 51.84

x = 7.2

6 0
3 years ago
Please I need the answer to this
Elza [17]

The equation is y=1x-2

Step-by-step explanation:

Is this the answer u needed?

7 0
3 years ago
Maya is cleaning out her closet and is shocked when she realizes that she has 55 shirts. She decides to donate 40% of them. ​
ipn [44]

Maya is cleaning out her closet and is shocked when she realizes that she has 55 shirts. She decides to donate 40% of them. How many more shirts does she have for her ?

Answer:

The number of T-shirt that Maya will have after donating 40% is 22 shirts

Explanation:

Given:( as per the above data provided)

Total number of T-shirts = 55

Percentage of T-shirts she wish to donate = 40%

To find:

Remaining number of T-shirt left after donating?

Formula to be used:

Remaining T shirt = (Total number of T-shirt /100) X The Percentage of T-shirt she wish to donate

Steps:

Substituting all the above provided values in the formula we get,

              = (55/100)*40

              = 22 shirts.

Thus the number of T-shirts left with her is 22.

3 0
3 years ago
7. 20% of what number is 18?​
Tom [10]
The answer is 90

20%of 99=18
8 0
2 years ago
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