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castortr0y [4]
3 years ago
9

Subtract -2k3 + k2 - 9 from 5k3 - 3k + 7.

Mathematics
2 answers:
ser-zykov [4K]3 years ago
8 0
 5k3 - 3k + 7 - (<span>-2k3 + k2 - 9)
= </span> 5k3 - 3k + 7 + 2k3 - k2 + 9
= 7k3 - k2 - 3k + 16
bonufazy [111]3 years ago
3 0

Answer:

7k^3-k^2-3k+16\\

Step-by-step explanation:

we have the expression:

5k^3-3k+7

and we must substract the other expression:

-2k^3+k^2-9

so we will get the following:

5k^3-3k+7-(-2k^3+k^2-9) (we put the minus sign because we are substracting)

So we solve this operation being carefull with the signs:

5k^3-3k+7+2k^3-k^2+9\\

and finally, joining like terms:

7k^3-k^2-3k+16\\

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Elevando um certo numero natural,maior do que zero,ao expoente 101 encontrarmos como resposta 1. Qual é esss numero? 101 A) 0 B)
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Answer:

B) 1

Step-by-step explanation:

The computation of the number is shown below:

Since the number 1 would be raised to any exponent so it always remains be 1

Like

= 1 × 1 × 1 × 1 × 1 × 1 × 1 × 1 × 1

= 1

Therefore the option B is correct

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PLEASE HELP ME :( I DONT UNDERSTAND! A teacher already had a certain number of canned goods for the food drive. Each day of the
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3 years ago
6) What is 13% of 33.39?
icang [17]

Answer:

1. We assume, that the number 33.39 is 100% - because it's the output value of the task.

2. We assume, that x is the value we are looking for.

3. If 33.39 is 100%, so we can write it down as 33.39=100%.

4. We know, that x is 13% of the output value, so we can write it down as x=13%.

5. Now we have two simple equations:

1) 33.39=100%

2) x=13%

where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:

33.39/x=100%/13%

6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 13% of 33.39

33.39/x=100/13

(33.39/x)*x=(100/13)*x       - we multiply both sides of the equation by x

33.39=7.6923076923077*x       - we divide both sides of the equation by (7.6923076923077) to get x

33.39/7.6923076923077=x

4.3407=x

x=4.3407

now we have:

13% of 33.39=4.3407

Step-by-step explanation:

4 0
3 years ago
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Explain: it’s equals to 20
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Figure ABCD is transformed to A′B′C′D′, as shown:
Mrrafil [7]

Answer:

Picture please. and answer.

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