3 years ago

Select the correct answer.

Mathematics

2 answers:

nikdorinn [45]3 years ago

6 0

Answer:

In photo below

Explanation:

In photo below

I hope this helps

Mariulka [41]3 years ago

4 0

Answer:

I think c is an ans of this question

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Levart [38]

Answer:

4:25

Step-by-step explanation:

Given that,

r₁ = 15 inches, r₂ = 6 inches

The area of the cylinder is given by :

$A=2\pi rh+2\pi r^2$

The ratio of surface areas of two cylinders,

$\dfrac{S_2}{S_1}=\dfrac{2\pi r_2h_2+2\pi r_2^2}{2\pi r_1h_1+2\pi r_1^2}\\\\\dfrac{S_2}{S_1}=(\dfrac{r_2}{r_1})^2\\\\=\dfrac{6}{15}^2\\\\=\dfrac{4}{25}$

Hence, the required ratio is 4:25.

8 0

3 years ago

9. Why do some savanna plants flower for only part of the year?

Elena-2011 [213]

Answer:

Step-by-step explanation:

The Savannah has very limited resources because of its environment so plants need to conserve and save as much energy and water as they can

3 0

2 years ago

How do you figure out the reciprocal of a numer? E.g 5, 2/7 and 1&2/5 ??

eimsori [14]

You need to multiply 1 and 5 plus 2.
and for 5 2/7 it would be 5 times 7 plus 2.

So...
5 2/7= 37/7

1 2/5= 7/5

6 0

3 years ago

What is the vertex of the equation y = -x 2 + 10x - 28?

Roman55 [17]

Answer:

(5,-3)

Step-by-step explanation:

Rewrite the equation in vertex form

y =-(x-5)^2 - 3

You take the value of -5 (that would be your x value) and change it to the opposite sign -> +5

Then you take -3 (that would be your y value) and take it as it is

therefore the answer is (5, -3)

3 0

3 years ago

(8x-12) (3x+5)=360<br> Can y’all please help me solve this problem. It is a polygon theorem

Lorico [155]

Answer:

360 polygon

Step-by-step explanation:

follow me and mark this answer

5 0

2 years ago