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Alexxx [7]
2 years ago
15

Help me with this ASAP

Mathematics
1 answer:
adelina 88 [10]2 years ago
4 0

Answer:

2 to the power of 2 times three to the power of 2

3 to the power of 2 times 5 to the power of 2

6 to the power of 2 times 7 to the power of 3

7 to the power of 2 times 5 to the power of 3

3 to the power of 2 times 5 to the power 2 times 7 to the power of 2

Step-by-step explanation:

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Mary spent $15. If this was 20% of her earrings, how much money did she earned?
Fed [463]

Hi, I'm happy to help!

First off, we need to arrange an equation for what is being asked. 15 is 20% of her earnings and we don't know her total earnings.

15=20%×__

We can write this percentage as

15=0.2×__

We then change the equation to do the inverse operation, which is division, this makes it easier to solve.

15÷0.2=__

Now, we solve

15÷0.2=75

<u>She earned $75</u>

<u></u>

I hope this was helpful, keep learning! :D

4 0
3 years ago
Which is the simplified form of the expression 5A + 12 - a - 12 + 6A?
Alexus [3.1K]

rearrange the equation so like terms are together: 5a-a+6a+12-12

+12 and -12 cancel out, so: 5a-a+6a

subtract: 4a+6a

add: 10a

8 0
2 years ago
Find the surface are of the prism.<br> the surface area of the prism is ________ cm^2.
Sindrei [870]
Hello!

To find the surface area of a rectangular prism you use the equation

SA = 2(wl + wh + lh)

SA is surface area
w is width
l is length
h is height

Put in the values you know

SA = 2(4.5 * 16 + 4.5 * 29 + 16 * 29)

Multiply

SA = 2(72 + 130.5 + 464)

Add

SA = 2(666.5)

Multiply

SA = 1333

The answer is 1333 cm squared

Hope this helps!
4 0
3 years ago
Tìm điều kiện có nghĩa của <img src="https://tex.z-dn.net/?f=%5Csqrt2x%5E%7B2%7D" id="TexFormula1" title="\sqrt2x^{2}" alt="\sqr
sladkih [1.3K]

Answer:

pls the language should be in english

3 0
3 years ago
Let f(x)=7x^2-8. find f(a^2)
strojnjashka [21]

Answer:

\large\boxed{f(a^2)=7a^4-8}

Step-by-step explanation:

f(x)=7x^2-8\\\\f(a^2)\to \text{put}\ x=a^2\ \text{to the equation of the function}\ f:\\\\f(a^2)=7(a^2)^2-8\qquad\text{use}\ (a^n)^m=a^{nm}\\\\f(a^2)=7a^{2\cdot2}-8\\\\f(a^2)=7a^4-8

6 0
3 years ago
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