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Zarrin [17]
3 years ago
6

SOMEONE PLEASE HELP I NEED IT there is a lonk to see it

Mathematics
1 answer:
34kurt3 years ago
4 0

Answer:

153.9 cm²

Step-by-step explanation:

A = πr²

A = 3.14(7)²

A = 153.9

Hope this helps!

You might be interested in
Pls provide the steps , brainliest to whoever gets it right .
Salsk061 [2.6K]

Times the two radicals together

So it's:

8*sqrt 15*5        (find common numbers between 5 and 15 which is 5)

8*sqrt(5^2*3)

8*5 sqrt3

40 sqrt 3

Hope this helped :)

4 0
2 years ago
How many years will it take for the area of the glacier to decrease to 15 square kilometers
atroni [7]

Answer:

  20ln(3)

Step-by-step explanation:

Put 15 for A and solve for t.

  15 = 45e^(-.05t)

  15/45 = 1/3 = e^(-.05t) . . . . divide by 45

  ln(1/3) = -.05t . . . . . . . . . . . take natural logs

  20ln(3) = t . . . . . . . . . . . . . . multiply by 20, simplify

It will take 20·ln(3) years for the area to decrease to 15 km^2.

5 0
2 years ago
What is the vertex?? Please answer QUICK!
astra-53 [7]

Answer:

D

Step-by-step explanation:

To obtain vertex form from the given equation use the method of completing the square

given 8y + x² = - y² - 181 + 26x

rearrange having the x terms and y terms together

add y² to both sides

8y + x² + y² = - 181 + 26x ( subtract 26x from both sides )

x² - 26x + y² + 8y = - 181

add (half the coefficient of the x/y terms )² to both sides

x² + 2(- 13)x + 169 +y² + 2(4)y + 16 = - 181 + 169 + 16

completing the square on both the x and y terms

(x - 13)² + (y + 4)² = 4 → D


5 0
2 years ago
Given △QRS ~ △XYZ, what is the value of tan(Q)?
VladimirAG [237]
Since the triangles are similar the ratios of the lengths of corresponding sides are equal.

tan Q = opp/adj = RS/QS = YZ/XZ = 9/12 = 3/4
8 0
3 years ago
Read 2 more answers
What is 1/8 of 16 pls I really need to get this done
KatRina [158]

Answer:

2

Step-by-step explanation:

We take the denominator.

That is 8.

8 goes in twice.

16÷8=2

3 0
3 years ago
Read 2 more answers
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