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alexdok [17]
1 year ago
15

Un círculo con circunferencia igual a 20 tiene un arco con ángulo central igual a 72°.

Mathematics
1 answer:
Citrus2011 [14]1 year ago
6 0

Answer:

4

Step-by-step explanation:

\frac{20}{360}=\frac{x}{72}\\x = 4

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Find the two Z-scores that separate the middle 73.72% on the Standard Normal Curve.
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Answer:

+1.12 and -1.12

Step-by-step explanation:

Let the two z scores be -z_1and+z_1.

Since  the two Z-scores that separate the middle 73.72% on the Standard Normal Curve, this can be represented by the equation:

P(-z_1

From the z table of the normal distribution, z₁ = 1.12. That is a z score of 1.12 gives 0.8686.

The two z scores are +1.12 and -1.12 = ± 1.12

4 0
3 years ago
The ratio of AC to BC is ________. 3/4 2/3 4/3 3/2
Crank
The ratio is 4/3 because you add AC which is 12 and then divided 9 (BC) by 12
4 0
3 years ago
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The polynomial −16t^2+550 gives the height of a ball t seconds after it is dropped from a 550-foot-tall building. Find the heigh
zhenek [66]

Answer:

486 feet

Step-by-step explanation:

h = -16t² + 550

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7 0
3 years ago
Solve the simultaneous equation x+y/4=1/2 and x-3y/3=2
Feliz [49]

Answer:

x+y/4 = 1/2

x-3y/3 = 2

move variables to one side:

multiply the first equation by 4 to get: x+y =2

and the second equation by 3 to get: x-3y =6

then subtract the equations to cancel out x:

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- x-3y = 6

then u get

y--3y = 2-6

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substitute to solve for x:

x-1 / 4 =1/2

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check:

3+-1

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correct!!!

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3 years ago
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CAN SOMEONE HELP ME I DON'T GET IT PLEASEE
Marysya12 [62]

Answer:

a rise of 20 degrees

Step-by-step explanation:

since it started at -2 degrees, you have to add enough to get out of the negatives.

-2 + 2= 0, then 0+18 to get to the 18°

-2 + 20 = 18

3 0
2 years ago
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