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Inessa [10]
4 years ago
5

A circle has a radius of 3.93 inches. Using the correct number of significant digits, find the circumference and the area of the

circle.
The circumference is ____ in.
The area is ____ in.
Mathematics
1 answer:
jolli1 [7]4 years ago
3 0

Answer:

The circumference is 24.69 in.

The area is 48.52 in.

Step-by-step explanation:

  • Circumference rule => Cf=2πr

So, Cf=2π(3.93)=24.69in

  • Area rule => A=πr^2

So, A=π(3.93)^2=48.52in

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SVETLANKA909090 [29]

Answer:

125a^3 + 300a^2b + 240ab^2 + 64b^3

Step-by-step explanation:

The volume of a cube is the cube of the side length.

V = s^3

Here, the side length of the cube is 5a + 4b, so we cube 5a + 4b.

V = (5a + 4b)^3

V = (5a + 4b)(5a + 4b)(5a + 4b)

V = (25a^2 + 20ab + 20ab + 16b^2)(5a + 4b)

V = (25a^2 + 40ab + 16b^2)(5a + 4b)

V = 125a^3 + 100a^2b + 200a^2b + 160ab^2 + 80ab^2 + 64b^3

V = 125a^3 + 300a^2b + 240ab^2 + 64b^3

8 0
3 years ago
What are the coordinates of the image of the point (4,5) after reflecting over the y-axis
NemiM [27]

here is a link to the aneser hope it helps

Download pdf
4 0
3 years ago
12 + 4r-9= 9x + 7 - 5x
Kryger [21]

Answer

The equation simplified is: r=x+1

6 0
3 years ago
What is x if x•x•13=46
Korvikt [17]
That wil'll be. x^2×13=46
4 0
3 years ago
Heath has 10 pennies in his piggy bank initially. He doubles the number of pennies in his piggy bank each day for five days. wri
vaieri [72.5K]

Answer:

y = 10 * 2^x

OR

y(5) = 10 * 2^5

Day 0 = 10 pennies: Point(0, 10)

Day 1 = 20 pennies: Point(1, 20)

Day 2 = 40 pennies: Point(2, 40)

Day 3 = 80 pennies: Point(3, 80)

Day 4 = 160 pennies: Point(4, 160)

Day 5 = 320 pennies: Point(5, 320)

Step-by-step explanation:

Heath has 10 pennies, so pennies = 10.

He doubles the number of pennies each day, so total pennies = 10 * 2 to the power of # of days.

Using the equation y = 10 * 2^x will give you the answer for any number of days. Since the problem asks for 5 days, you plug in 5 for x. On the graph, this would be a single point (5, 320).

So, plot the 6 points you have and connect a curved line through it. That should be your answer.

5 0
4 years ago
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