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Dima020 [189]
3 years ago
12

Find the area and the circumference of a circle with radius 8cm. Use the value 3.14 for π, and do not round your answers. Be sur

e to include the correct units in your answers.
Mathematics
1 answer:
Tems11 [23]3 years ago
5 0

Answer:

50.272 cm

Step-by-step explanation:

GIven

radius= 8cm

Pi= 3.142

Required

The circumference C

C= 2πr

substitute

C=2*3.142*8

C=50.272 cm

Hence the circumference is 50.272cm

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6. A hospital needs a supply of an expensive medicine. Company A has the most
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We are required to find the total milligrams if medicine the hospital can get from the three companies.

The total quantity of medicine the hospital can get from the three companies is 2.75 milligrams

There are there companies:

Company A

Company B

Company C

Company A = 1.3 milligrams

Company A is 0.9 milligrams more than Company C's

A = 0.9 + C

1.3 = 0.9 + C

1.3 - 0.9 = C

0.4 = C

C = 0.4 milligrams

Company A is also twice the difference between the weight of

Company B's supply and Company C's

A = 2(B - C)

1.3 = 2(B - 0.4)

1.3 = 2B - 0.8

1.3 + 0.8 = 2B

2.1 = 2B

Divide both sides by 2

B = 2.1/2

B = 1.05 milligrams

Therefore,

A + B + C

= 1.3 + 1.05 + 0.4

= 2.75 milligrams

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brainly.com/question/24562139

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3 years ago
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Choose the correct equation for the parabola based on the given information. Given: Focus:(2,8) Directrix: y = 4 a. 2(y-2)= (x-
Harman [31]
<h3>Answer:  c. 8(y-6) = (x-2)^2</h3>

Explanation:

The directrix is horizontal, so the axis of symmetry is vertical. We'll have an x^2 term. The vertical distance from y = 4 to y = 8 is 4 units. Cut this in half to get 2, which is the focal distance p = 2.

The point (2,4) is directly below (2,8), and the point is on the directrix. The midpoint between (2,4) and (2,8) is (2,6). This is the vertex.

(h,k) = (2,6)

4p(y-k) = (x-h)^2

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8(y-6) = (x-2)^2

8 0
3 years ago
What is the measure of Angle A
jeka94

Answer:

Step-by-step explanation:

7.5xsin(16.7)/2.5=0.8620815595

sin-1(0.8620815595)=59.55110984

7 0
3 years ago
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What is the sign of f on the interval -7/3
Greeley [361]

Answer:

C is the answers for the question

7 0
2 years ago
What factors of 20 are also factors of 50
spayn [35]
The easiest way to find the factors of a pair of numbers, is simply to write out the factors until you find the ones that they have in common. So in this case, these factors would be listed as follows:
20: 1,2,4,5,10,20
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