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2 years ago

5

Someone please help! I’ll give brainliest!!

1 answer:

Lana71 [14]2 years ago

3 0

Answer:

(1436.8cm³) let me know if that helps

Step-by-step explanation:

-so if the diameter is a straight line and it's 15 cm

-The formula for the sphere it would be v=4/3πr³

-The radius is going to be r=7cm

-v = 4/3 π (7cm)³

-so you would type in 4/3 x 3.14 x 7 ³ =1,436

- 3.14 or π

- you would round it to the nearest 10th (1436.8cm³)

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3 years ago

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Answer:

$x=-1,1,-\sqrt{\frac{7}{4} },\sqrt{\frac{7}{4}}$ and $y=-1,\frac{1}{2}$

The ordered pair solutions are $(-\sqrt{\frac{7}{4}},0.5)$ , $(\sqrt{\frac{7}{4}},0.5)$ , $(-1,-1)$ , and $(1,-1)$ .

Step-by-step explanation:

I'm assuming the system is $\left \{ {x^2+y^2=2} \atop {y=2x^2-3}} \right.$ :

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2 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

Multiplying two digits<br>

Vika [28.1K]

Answer:

Get a calculator

Step-by-step explanation:

Most of the time for simple math like multiplying 2 digits, it is easiest if you just get a calculator. It saves a lot of time.

If you can't get a calculator then i recommend memorizing some common equations.

For example 10*15= 150

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15+15 is 30, and 30+150(from 10*15)=180.

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2 years ago

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Step-by-step explanation:

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