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3 years ago

I REALLY need help with these problems (we are learning about positive and negative numbers)

Mathematics

1 answer:

olganol [36]3 years ago

3 0

First one I think would be "A" because they are negatives and smaller than positive eight.

And the second one should be "B" I believe

Hope this helps!

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your friend says that the volume of a sphere with a radius r is four times the volume of a cone with radius r. when is this true

Ierofanga [76]

Volume of a sphere is given by the formula: $V_{\circ}=\frac43\pi r^3$

If we pull the 4 out front we have, $V_{\circ}=4\left(\frac13\pi r^3\right)$ .

Volume of a cone is given by the formula: $V_{\triangle}=\frac{1}{3}\pi r^2\cdot h$

Notice that if the height of the cone is equal to the radius, $V_{\triangle}=\frac13\pi r^2\cdot r$

then it's exactly what we see in our volume formula without the 4!

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2 years ago

Brainliest will be awarded please answer the below question fast u will get points too.

pshichka [43]

Answer:

Step-by-step explanation:

For a number to be divisible by 4 you just need to worry about the 10s and 1s place. You also want to know that the 1s cylce every 20, or in other words:

4 8 12 16 20

24 28 32 36 40 and so on. So the only numbers that x can be there are 1, 3, 5, 7, 9. Does that make sense? and can you manage the rest?

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3 years ago

Which numbers are solutions of the inequality? x > –5; –7, –5, –1

yanalaym [24]

Answer:

-1 is the only answer that is greater than -5

3 0

2 years ago

Subtract -13xy from -5xy so -5xy -(-13xy)=?

S_A_V [24]

Answer:

8xy

Step-by-step explanation:

Subtract -13xy from -5xy

-5xy - (-13xy) =

-5xy + 13xy =

8xy

good luck, i hope this helps:)

3 0

2 years ago

Read 2 more answers

Combine and simplify the radicals below sqrt3.sqrt8

Svetllana [295]

,The answer is
$\sqrt[]{24}$

5 0

2 years ago