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labwork [276]
3 years ago
12

Whats the perimeter of a semicircle of 6cm​

Mathematics
1 answer:
pashok25 [27]3 years ago
3 0

Answer:

P = 15.42 cm

Step-by-step explanation:

Perimeter of circle = (πD/2)+D

Where D = 6 cm

P =( (3.14)(6)/2) + 6

P = (3.14)(3)+6

P = 9.4 + 6

P = 15.4 cm

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8 gallons of soil are needed to fill 6 large plant pots. How many gollons are needed to fill 8 pots? Give your answer as a mixed
sineoko [7]

Answer:

10 6/10

Step-by-step explanation:

8/6 = 1.333

1.333 x 8 = 10.667

as a mixed number: 10 6/10

8 0
3 years ago
Type the correct answer in each box. Consider the sum of cubes identity: a3 + b3 = (a + b)(a2 − ab + b2). For the polynomial 8x3
zhuklara [117]

Answer:

a = 2x, b = 3.

Step-by-step explanation:

8x^3+27 = (2x)^3 + 3^3

a = 2x and b = 3.

We can cube root 8x^3 getting 2x and cube root 27 getting 3.

4 0
3 years ago
If the range of the function f(x)=x/4 is {28, 30, 32, 34, 36}, what is its domain?
avanturin [10]
Y = x/4
x = 4y
domain = {4(28), 4(30), 4(32), 4(34), 4(36)} = {112, 120, 128, 136, 144}
4 0
3 years ago
Suppose in a representative sample of adult Americans ages 26 to 32 years, 27% indicated that they owned a fitness band that kep
DanielleElmas [232]

Answer: Yes, we have.

Step-by-step explanation:

Going by the details provided, Probability of success of choosing a citizen with a fitness band 27%

The probability function for expected value shows the Formula to know with sufficient dependence what proportion of the sampled people will have the fitness band.

Since 27% of 500 = 135.

and 135 is more than a quarter of 500(125), then we have enough Evidence that more than a quarter of this age group own a fitness band.

6 0
3 years ago
Find the coordinates of the point where the line <img src="https://tex.z-dn.net/?f=y%3D5x%2B7%5C%5C" id="TexFormula1" title="y=5
Anvisha [2.4K]

Answer:

(0, 7)

Step-by-step explanation:

The point that crosses the y-axis is called the y-intercept of the line.

We are given an equation of the line and we need to determine the y-intercept. This can be done by determining the constant in the equation.

What are constants?

Constants are such terms that include only numbers. There should be no variables in constants.

<u>We know that:</u>

     \bullet \ \text{Given equation of line: y = 5x + 7}

The constant we can see in the equation is "7". Therefore, the y-intercept is 7.

Note: The y-intercept of the line must have an x-coordinate of 0.

<u>Therefore,</u>

⇒ Coordinates of y-intercept: (x, y) ==> (0, 7).

7 0
2 years ago
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