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3 years ago

25x² - 4 I'm trying to help a friend n that's all they gave me ahh

Mathematics

1 answer:

torisob [31]3 years ago

7 0

This is a difference of squares problem. You just have to make sure every term is a perfect square and that there is subtraction in the problem.

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6th grade math (answer both) .... :D

LekaFEV [45]

Answer:

Question 2: Option B

Step-by-step explanation:

The number of ounces and the total price for yogurt cup A is not stated, therefore, I can not answer question 1 properly.

<h3>For question 2:</h3><h3 />

Unit rate formula for price is: $\frac{price}{quantity}$

32 ounces of yogurt sell for 1.62.

So:

$\frac{1.62}{32} =0.050625$

0.050625 ≈ 0.05

<em>Option B should be the best answer. </em>

7 0

3 years ago

One side of a rectangle is 3 m more than the other. If the perimeter of the rectangle is 30 m, what are its dimensions? *

uranmaximum [27]

Answer:

the length— 6

width— is 9

Step-by-step explanation:

you said One side— 3m MORE

so we will consider the length Number as X

we will consider width As three plus X

- You want to know the Perimeter. So we have to

add.

— so the expression is 3+3+x+x+x+x = 30

it is then simplified to 6+4x= 30

then we should be able to find out the X which is 6

when we substitute the values with dimensions, you will get

your final Answer

I hope This Helped!

6 0

3 years ago

4.5*10^-8/9*10^-9 find the quotient and write it in scientific form

g100num [7]

Answer:

Step-by-step explanation:

4.5*10^-8/ 9*10^-9

1) Reduce the fraction, express 9 as a product of multiplying 4.5*2

4.5*10^-8/4.5*2*10^-9

2) Then notice the common factor of numerator and denominator( 4.5) , get rid of it in both numerator and dnominator

3) 10^-8/ 2*10^-9= 1/2*(10^-8/10^-9)= 0.5* (10^-8/10^-9)

10^-8/10^-9= 10^(-8-(-9))= 10^1=10.

so 0.5*10=5 (it is the answer written in scientific form)

3 0

3 years ago

Chris has $120 to spend at the bookstore. Chris buys a hardcover book for $36, as well as some gift cards for his family and fri

Wittaler [7]

Answer:

120-36=84

84/15=5 with $9 left

120=36-15x

6 0

3 years ago

Mr. Williams is building a sand box for his children. It costs $228 for the sand if he builds a rectangular-sand box with dimens

Andru [333]

Answer: The correct option is (C) $342.

Step-by-step explanation: Given that Mr. Williams is building a sand box for his children and is costs $228 for the sand if he builds a rectangular-sand box with dimensions 9 ft by 6 ft.

We are to find the cost of the sand if he decides to increase the size to $13\frac{1}{2}~\textup{ft by }9~\textup{ft}.$

Since the box is empty from inside, so we will be considering the perimeter of the box, not area.

The perimeter of the rectangular-sand box with dimensions 9 ft by 6 ft is

$P_1=2(9+6)=30~\textup{ft},$

and the perimeter of the rectangular-sand box with dimensions $13\frac{1}{2}~\textup{ft by }9~\textup{ft}.$ is

$P_2=2\left(13\dfrac{1}{2}\times9\right)=2(13.5\times9)=45~\textup{ft}.$

Now, we will be using the UNITARY method.

Cost of sand for building rectangular-sand box with perimeter 30ft = $228.

So, cost of sand for building rectangular-sand box with perimeter 1 ft will be

$\$\dfrac{228}{30}.$

Therefore, the cost of sand for building rectangular-sand box with perimeter 45 ft is given by

$\$\dfrac{228}{30}\times45=\$342.$

Thus, the required cost of the sand is $342.

Option (C) is CORRECT.

3 0

3 years ago

Read 2 more answers