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3 years ago

Please help ! Easy 7th grade work .

Mathematics

2 answers:

joja [24]3 years ago

7 0

Answer:

1. -38

2. -25

3. 10

4. -4

5. 0

6. -34

7. 9

8. -7

9. -4

Step-by-step explanation:

1. -22+(-16): All is needed to be done is adding it like normally but jsut by putting a negative sign in the front: -38

2. Same idea just add

3. Regular addition

4. This one is just positive 21 + (-21)= 0 with -4 left over

5. Add -17 and -3 together for -20 then add the positive 20 to get zero

6. Add positive 25 and negitve 25. You have -34 left over.

7. Add 5+4 to get 9

8. Since -15 is bigger then 8 it becomes negative

9. -11 is bigger so subtract 7 to get 4 but it becomes negative

Tpy6a [65]3 years ago

5 0

Answer:

1-9 answers

Step-by-step explanation:

1=-38

2=-25

3=16

4=-4

5=0

6=-34

7=9

8=-7

9=-4

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Dmitry [639]

Answer:

To make the cup 64.57 square inches of plastic were used.

Step-by-step explanation:

A cup has the format of a cylinder with a open top. The surface area of the cup is given by the area of it's base (a circle) and the area of it's walls, wich can be seen as rectangle where the width is the length of the circle at the base and the height is the height of the cylinder. So we have:

area of the base = pi*r^2 = 3.14*(1.75)^2 = 3.14*3.0625 = 9.616 square inches

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3 years ago

What is ∛1728. Then multiplied by ∛14903

NeTakaya

Cube root of 1728 is 12 and on multiplying it by cube root of 14903 we get 295.306.

<u>Solution: </u>

Need to calculate $\sqrt[3]{1728}$ and then multiply the result by $\sqrt[3]{14903}$

Let us first evaluate $\sqrt[3]{1728}$

$\Rightarrow \sqrt[3]{1728}=\sqrt[3]{12 \times 12 \times 12}=12$

As need to multiply 12 by $\sqrt[3]{14903}$

$\Rightarrow 12 \times \sqrt[3]{14903}$

On solving $\sqrt[3]{14903}$ , we get

$\sqrt[3]{14903}=24.608$

$\Rightarrow 12 \times \sqrt[3]{14903}=12 \times 24.608=295.306$

Hence cube root of 1728 is 12 and on multiplying it by cube root of 14903 we get 295.306.

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Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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