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Rina8888 [55]
3 years ago
15

Simplify this expression (5)^ -5 (5)^ 7 please explain how you got the answer

Mathematics
1 answer:
Rina8888 [55]3 years ago
3 0

Answer:

( {5}^{ - 5} ) \times ( {5}^{7} ) \\  \\  \frac{ {5}^{7} }{ {5}^{5} }  =  {5}^{7 - 5}  =  {5}^{2}

the answer is b. 25

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Is the given function continuous at x=1?
rusak2 [61]

Answer:

The answer is "Option C".

Step-by-step explanation:

Given:

\to f(x)=2x^2-3x+1\\\\when \ x=1\\\\\to f(1)= 2(1)^2-3(1)+1\\\\\to f(1)= 2(1)-3+1\\\\\to f(1)= 2-3+1\\\\\to f(1)=-1+1\\\\\to f(1)=0

That's why choice C is correct.

3 0
3 years ago
Convert 12 and a half of 30
tamaranim1 [39]

Answer:

375

Step-by-step explanation:

12½[30] → 25⁄2[30]

Multiply 25 by 30 [750] then divide by 2 to get 375.

I am joyous to assist you anytime.

7 0
3 years ago
about 7.5 gallons of water will fill up 1 cubic foot of space. how many gallons of water will fill a goldfish pool shaped like t
Cloud [144]
Well, since there is no image I am unable to say the exact volume. But here is the volume formula-
V=L times W times H
*V=volume W=width H=height
and you don't actually have to write times you can do the symbol.

Example- if I had a rectangular prism of the width being 5 cubes, the length 8 cubes, and the height 7 cubes(following how many gallons are in a cube 7.5) I would the use my formula. V=LWH- 8 times 7= 56 56 times 5=280 280 times 7.5= 2100
V=2100 (that is your answer reply If you didn't mean the volume or you don't get it)


7 0
3 years ago
Read 2 more answers
I wrote my last question wrong. What's 4w^2 if the w = 3?
9966 [12]

Answer:

144

Step-by-step explanation:

1. Rewrite question since you know the variable. Rewritten it would be 4×3^2

2. Do multiplication. 4 times 3 is 12

3. Square 12 which means 12 times 12

4. 12 times 12 is 144.

Hopefully it's right!

3 0
3 years ago
Johnny buys broken bicycles from the junkyard, repairs them, and then resells them. He recently sold a bike for $50, which was 2
sesenic [268]

Answer:

the bike was bought for $20

Step-by-step explanation:

this is true because 20*2.50 is 50

2.50 is the same as 250%

8 0
2 years ago
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