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OlgaM077 [116]
3 years ago
10

Someone help me with this ASAP!AKA WITH PART 3!!

Mathematics
2 answers:
valina [46]3 years ago
6 0

14.2 if u need fraction it is 14 1/5

natulia [17]3 years ago
3 0

29 minutes I believe

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A sphere has diameter 28 cm. If the diameter is divided by 2, what is the effect on the surface area?
spayn [35]

Answer:

The surface area is divided by 4.

Step-by-step explanation:

Surface area of a sphere is 4πr².

When the diameter is 28 the radius is 14. So: 4π(14)² = 784π

If you cut the diameter in half you get 14. The radius is now 7.

4π(7)² = 196π.

784/4 = 196 so divided by 4.

4 0
2 years ago
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2 years ago
How do I put this in slope intercept form from the line in the graph? #4
vichka [17]
You're given the y-intercept, which is (0,5), so to complete the slope intercept form, you now need to find the slope. slope is the change in y over the change in x, so take points (4,-1) and (2,2) for instance and apply the formula; -1-2= -3 and 4-2=2, so the change in y is -3 and the change in x is 2. to find the slope, you divide change in y by change in x, which is -3/2. from here, you can gather that the slope intercept form is y= -3/2x + 5
5 0
2 years ago
Make r the subject of the formula <br>v = \pi \: h {}^{2}(r - \frac{h}{3})v=πh2(r−3h​) <br>​
mel-nik [20]

Answer:

\boxed{r =  \frac{h}{3}  +  \frac{v}{\pi {h}^{2} } }

Step-by-step explanation:

Solve \:  for \:  r:  \\  =  >   v= \pi {h}^{2}(r -  \frac{h}{3}  ) \\  \\  v=\pi {h}^{2}(r -  \frac{h}{3}  )is \:  equivalent  \: to   \:   {h}^{2}\pi(r -  \frac{h}{3}  ) = v: \\  =  >  {h}^{2}\pi(r -  \frac{h}{3}  ) = v \\  \\ Divide  \: both \:  sides  \: by  \: \pi  {h}^{2} :  \\  =  > r -  \frac{h}{3}  =  \frac{v}{\pi {h}^{2} }  \\  \\ Add \:   \frac{h}{3}  \:  to  \: both \:  sides:  \\  =  > r =  \frac{h}{3}  +  \frac{v}{\pi {h}^{2} }

7 0
2 years ago
WILL EARN BRAINLIEST! [Rate of Functions]
AURORKA [14]

Answer:

every pair is being multi by the next number

Step-by-step explanation:

2 x 3 =6

3 x 4 = 12 so the second number goes up one every time

7 0
3 years ago
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