10 months ago

Hi I need help with this homework so I can get a good grade on the test

Mathematics

1 answer:

Luda [366]10 months ago

6 0

The answers are indeed nx and m.

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7^3 times 7^-7 times 7

dusya [7]

Hello there! :)

Answer: $\frac{1}{343}$

*The answer must have a fraction.*

Step-by-step explanation:

Lesson: Zero and Negative Exponents.

Distributive property: a(b+c)=ab+ac

First, you apply exponent rule.

$a^b*a^c=a^b^+^c$

$7^-^3$

$\frac{1}{7^3}=7^3=7*7*7=343$

Final answer: $\frac{1}{343}$

Hope this helps!

Thanks!

-Charlie

Have a great day!

4 0

3 years ago

Nicole sold 1 cherry pie and 9 pumpkin pies for $60. Lisa sold 11 cheery pies and 4 pumpkin pies for $90. what's the cost each o

bogdanovich [222]

Cherry pie is $ C.
Pumpkin pie is $ P.

C + 9P =60 -------> C=60 - 9P
11C+4P = 90

11(60 - 9P) +4P=90
660 - 99P + 4P = 90
-95P = -570
P =570/95 = 6
P=6
C=60-9*P=60 - 9*6= 60-54=6
C=6

Answer: 1 cherry pie -$6, 1 pumpkin pie - $6.

Check:
11C+4P = 90 , 11*6 +4*6 =90, 66+24=90, 90=90 True

8 0

3 years ago

Help please answer as soon as possible thank you

Svetradugi [14.3K]

D a kilogram is 100000 bigger

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2 years ago

A neutral atom of oxygen has 8 protons and __ electrons

a_sh-v [17]

Pretty sure it’s 8 electrons

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3 years ago