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2 years ago

The sum of the angle measures in a 21-gon is

Mathematics

1 answer:

Dominik [7]2 years ago

6 0

Answer:

180

Step-by-step explanation: The exterior angles sum to 360 and there are 21

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Which expression is equivalent to 1/3y?

Fittoniya [83]

Equivalent expression

y/3 = 1/3 * y

4 0

3 years ago

Read 2 more answers

If LP = 15 and PR = 9, find LR. Explain.

Rudiy27

Answer:

Step-by-step explanation:

LP = 15 on one side

LR= 9 on the other side

____________________|____________|

P L R

add them and PR is 24

15+9= 24

5 0

3 years ago

What is 3/16 divided by 1/4 fraction form

Ulleksa [173]

The answer to this is,1/4.

3 0

3 years ago

A rancher wishes to build a fence to enclose a rectangular pen having area 24 square yards. Along one side the fence is to be ma

Gnoma [55]

Answer:

The value is $C \approx \$76$

Step-by-step explanation:

From the question we are told that

The area of the rectangular pen is $A = 24 \ yard^2$

The cost of material used to make one side is $z = \$ 6$

The cost of material used to make the other sides is $r = \$ 3$

Now , the fence to be build around the rectangular pen has four sides, the first opposite sides are equal, let assume each of the to be x yard and the other opposite sides are also equal as well let assume of the to be y yard

So the cost is mathematically represented as

$C = zx + r (x + 2y )$

=> $C = 6x + 3(x + 2y)$

=> $C = 9x + 6y$

Now the area of the fence is mathematically represented as

$A = x* y = 24$

=> $y = \frac{24}{x}$

=> $C = 9x + 6[\frac{24}{x} ]$

=> $C = 9x + [\frac{144}{x} ]$

Now differentiating

$C' = 9 + 144* (-2) x^{-2}$

$C' = 9 - 288x^{-2}$

At minimum $C' = 0$

$9 - 288x^{-2} = 0$

$x^{-2} = 0.03125$

$x = \sqrt{\frac{1}{0.03125} }$

$x = 5.66$

Now substituting for x in the equation above to obtain minimum cost

$C = 9(5.66) + [\frac{144}{5.66} ]$

$C \approx \$76$

8 0

3 years ago

The overall distance traveled by a golf ball is tested by hitting the ball with Iron Byron, a mechanical golfer with a swing tha

dmitriy555 [2]

Answer:

The tabulated value is less than the calculated value, therefore we accept the null hypothesis and It show that there is a difference in the mean overall distance of brands.

Step-by-step explanation:

3 0

3 years ago