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4 years ago

Is 10/25 equivalent to 0.4

Mathematics

2 answers:

pickupchik [31]4 years ago

7 0

Yes,
10/25 = .4
So, 10/25 is equivalent to .4

pickupchik [31]4 years ago

4 0

Yes.

First, you have to make denominator equal to 100. so if you multiply 10/25 by 4, you'll get 40/100. there's two zeros in the denominator, so you have to move the decimal twice to the left ( 40. => .4 ) and it equals 0.4 so you're right.

I can't speak English fluently,.. sorry about that, but I hope you understand:)

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Subtract the following rational expressions

lesya692 [45]

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3 years ago

How do I do these problems?

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3 years ago

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natta225 [31]

Answer:

so whats the question??

Step-by-step explanation:

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3 years ago

Read 2 more answers

Find the roots 7x^2 + 46 = 32

Reika [66]

Answer:

i $\sqrt{2}$ (or no solution if you haven't learned about imaginary numbers yet)

Step-by-step explanation:

The first thing you want to do is isolate x, or get x alone.

7x²+46=32

=> 7x²+46-46=32-46

=>7x²=-14

=>7x²÷7=-14÷7

=>x²=-2

If you have learned about imaginary numbers read on. If not, you have to realize that squaring any number can't result in a negative number. This means that there is no solution.

If you have learned about imaginary numbers, read on.

Now that you have x^2=-2, you can take the square root of both sides.

x= $\sqrt{-2}$

Using a property about square roots (I don't know what it's called)

the equation becomes:

x= $\sqrt{-1}\sqrt{2}$

And since $\sqrt{-1}$ =i, you can substitute in this value in to get x=i $\sqrt{2}$ .

4 0

3 years ago

Which are the solutions of x2 = -7x – 8?

Lady bird [3.3K]

Answer:

( - 7 + √17 ) / 2, ( - 7 - √17 ) / 2

Step-by-step explanation:

x^2 = - 7x - 8

x^2 + 7x + 8 = 0

Here,

a = 1

b = 7

c = 8

D = b^2 - 4ac

= 7^2 - 4 ( 1 ) ( 8 )

= 49 - 32

D = 17

x = - b ± √D / 2a

= - 7 ± √17 / 2 ( 1 )

x = ( - 7 + √17 ) / 2, ( - 7 - √17 ) / 2

6 0

3 years ago