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leva [86]
3 years ago
5

The area a of a circle is a function of its radius express the area as a function of its diameter

Mathematics
1 answer:
elixir [45]3 years ago
3 0

Answer: A(D) = pi * (D/2)^2

Step-by-step explanation:

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An image of two concentric circles is shown with r2 = 6 and r1 = 2:
AysviL [449]

The radius of the Outer circle (with r₂) is 6 and the radius of the inner circle (with r₁) is 2. When objects are similar, they have a proportional relationship. If we take the outer circle and squeeze by one third, we get a radius of 6 x 1/3 = 2. On the other hand, if we start with the inner circle and stretch it by 3, we get a radius of 2 x 3 = 6.


Thus, to make r₂ similar, we use a scale factor of 1/3. The third choice is best.

5 0
3 years ago
A cafe makes ten 8-ounce fruit smoothies. Each smoothie is made with 4 ounces of soy milk and 1.3 ounces of banana flavoring. Th
Dvinal [7]

Answer:

27 ounces of blueberry juice. 40 ounces of soy milk. 13 ounces of banana flavoring.

Step by Step:

4 + 1.3 = 5.3, This is how much of the smoothie is made up of the soy milk and banana flavoring, 5.3 ounces.

So to find the amount of blueberry juice in the smoothie you have to subtract 8-5.3. This finds the remaining part of the smoothie, which is the blueberry juice. 8-5.3 = 2.7

2.7 ounces of blueberry juice in each smoothie.

Now you have to multiply every ingredient by 10, since there are 10 smoothies.

4 * 10 = 40

1.3 * 10 = 13

2.7 * 10 = 27

You need 40 ounces of soymilk, 13 ounces of banana flavoring, and 27 ounces of blueberry juice to make 10, 8-ounce smoothies.

7 0
2 years ago
Can someone please help me with this I will give brainliest
IrinaK [193]

Answer:

Step-by-step explanation:

2(2x +4) - 2x = x + 18

4x +8 -2x = x +18

2x -x = 18-8

X = 10

Put the value of x in both side

Left side *+*+*+*+*+

2 ( 2*10+4)-2*10

48-20 = 28

Right side +*+*+*+*+*

X + 18

10+ 18 = 28

Mark it as Brainlist. Follow me for more answer

4 0
3 years ago
Use the equation n= b-4 to find the value of n when b=9
Valentin [98]

Put 9 in for b

N=9-4

N=5

6 0
3 years ago
Which is the graph of y= x-5-1?
tamaranim1 [39]

Answer:

None of them

Step-by-step explanation:

Because i can't see the graph

6 0
3 years ago
Read 2 more answers
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