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faltersainse [42]

3 years ago

11

im bought 10 used books at the yard sale How much did she pay? Did you use addition or multiplication to solve this problem? Why

? Also the price of one book is 75 cents

1 answer:

Tema [17]3 years ago

3 0

It’s 7.5 because 10x0.75 is 7.5

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Hi! I was wondering if you could help with this question please :)

Makovka662 [10]

Answer:

$R=\frac{QJ}{I^2t}$

Step-by-step explanation:

So we have the equation:

$Q=\frac{I^2Rt}{J}$

And we want to solve for R.

First, let's multiply both sides by J to remove the fraction on the right. So:

$(J)Q=(J)\frac{I^2Rt}{J}$

Simplify the right:

$JQ=I^2Rt$

We can rewrite our equation as:

$JQ=R(I^2t)$

So, to isolate the R variable, divide both sides by I²t:

$\frac{JQ}{I^2t}=\frac{R(I^2t)}{I^2t}$

The right side cancels, so:

$R=\frac{QJ}{I^2t}$

And we are done!

7 0

3 years ago

I need to find the answer to number 2

8_murik_8 [283]

Answer:

4

Step-by-step explanation:

Just PLug in the Values, and solve using PEMDAS.

7 0

3 years ago

Read 2 more answers

The area of a triangular board is 150.5 square inches.The base is 43 inches.What is the height?

olga nikolaevna [1]

Answer: height is 7 inches

Step-by-step explanation:

height=2 ×Area/Base

= 2 (150.5/43)

=2 (3.5)

h = 7

6 0

2 years ago

This isosceles triangle has two sides of equal length, a,

anygoal [31]

Answer:

Step-by-step explanation:

2a + b = 15.7

2(6.3) + b = 15.7

b = 3.1

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3 years ago

I'm super confused with this word problem

Kaylis [27]

Question is not clear

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3 years ago