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soldi70 [24.7K]
3 years ago
11

What percent of 40 is 80?

Mathematics
2 answers:
antiseptic1488 [7]3 years ago
4 0

Answer:

200% i think

Step-by-step explanation:

Damm [24]3 years ago
4 0

Answer:

200%

Step-by-step explanation:

40 is 100% of 40.

We know that 80 is twice as much as 40, so it will be double the percentage that 40 is of itself. Since 40=100%, 80=200%

Hope this helps! Have a good day!

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Answer:

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Step-by-step explanation:

3 0
3 years ago
1. f(x) = x2 - 21<br> f(5)
matrenka [14]

Answer:

x=13

Step-by-step explanation:

if you will substitute the value of f(x) with 5, you will get the following equation:

5=2x-21

2x=26/÷2

x=13

(I didn't know what you ment when you wrote x2, is it x square or 2X)

I really hope it was the second one, cause that's how I solved it.

8 0
3 years ago
The value of the 8 in 8.4 is 100 times greater than the 8 in?
Scilla [17]
I think it would be .08, as 100 is equal to 10^2.

5 0
4 years ago
Which of the following facts, if true, would allow you to prove that lines l and m are parallel? NEED HELP
Damm [24]

Two parallel lines A and B are crossed by another line as shown in the attached figure. Angle 2 and 3 are equal, because they are opposite angles, while angle 3 and 7 are also equal, because they are corresponding angles, thus it is deduced that

angle 2 = angle 3

angle 3 = angle 7

So angle 2 = angle 7

<span>Hence fourth option is right.</span>

8 0
3 years ago
What is the area of a rectangle whose sides are 12 feet long and 5 feet wide?
IgorLugansk [536]

Answer:

60

Step-by-step explanation:

Area of rectangle (A)=Length (L) × Width (W)

A=12×5

A=60

3 0
3 years ago
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