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Paha777 [63]
3 years ago
7

If the area of a circle is 81π, then what is the diameter of the circle?​

Mathematics
1 answer:
viva [34]3 years ago
7 0

Answer:

18

Step-by-step explanation:

81π=πr^2

r= 9,-9

9+9=18

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Wyatt offers 8 types of sandwiches and 4 types of tacos. He will increase his selection of sandwiches by 1 per month. He will in
Klio2033 [76]

Answer:

In 4 months Wyatt offer an equal number of sandwiches and tacos.

Step-by-step explanation:

We are given the following in the question:

Types of sandwiches = 8

Rate of increase of sandwich = 1 per month

Thus, number of sandwiches in x months will be given by

n_1(x) = 8 + x

Types of tacos = 4

Rate of increase of tacos sandwich = 2 per month

Thus, number of tacos in x months will be given by

n_2(x) = 4 + 2x

Equating the two equations, we get,

n_1(x) = n_2(x)\\8 + x = 4 + 2x\\\Rightarrow x = 4

Thus, in 4 months Wyatt offer an equal number of sandwiches and tacos.

4 0
4 years ago
The surface area of this regular pyramid is 1040 cm2. The base is a regular pentagon with side b = 16 cm and slant height l =15
Valentin [98]

Answer:

(a) = 11 cm

Step-by-step explanation:

The formula for finding the surface area of a regular pyramid is B + (1/2*P*l), with B being the area of the base, p being the perimeter of the base, and l being the slant of the pyramid.

The area of a pentagon can be solved using the formula 1/2*a*p, with a being the apothem and p being the perimeter of the pentagon.

  1. B + (1/2*80*15) = 1040
  2. B + 600 = 1040
  3. 1040 - 600 = 440 (440 is the area of pentagon)
  4. 1/2*a*(16*5) = 440
  5. 40*a = 440
  6. 440/40 = 11

The apothem is 11 cm. Hope this helps!

6 0
3 years ago
A manufacturing business needs various items to function well. Which is an example of a service?.
aliina [53]
The answer is C. transportation is a service.
8 0
3 years ago
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Divide the following polynomial using synthetic division, then place the answer in the proper location on the grid. Write answer
MAXImum [283]
-4 1. -8. 24. 12. 40 -4. 48. -288. 1104 1 -12. 72. -276. R1144 ANSWER: X^3-12x^2+72x-276+1144/x+4
8 0
3 years ago
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Sam raked 3 bags of leaves in 16 minutes. If he continues at the same rate, how many minutes will it take him to rake 9 bags?
zmey [24]

Answer:

48 minutes.

Step-by-step explanation:

9 divided by 3 equals 3, 16 multiplied by 3 equals 48.

8 0
3 years ago
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