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AlladinOne [14]
3 years ago
11

Using the formula C = 2πr, how would i find the circumference of a circle with diameter of 28 inches. and i have to round the as

nwer to the nearest inch

Mathematics
1 answer:
arlik [135]3 years ago
5 0
Sorry, this took me a while to upload!

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a cafe offers senior citizens a 15% discount off its regular rice of 8.95 for the dinner buffet. what percent of the regular pri
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Answer: 85%

Step-by-step explanation:

The regular price is 8.95, with a 15% discount for Seniors. So the senior price would be 100%-15%=85% of the regular price.

4 0
3 years ago
Solve the equation and show your work please <br> 5s=7s+1-2s
Helen [10]
Does this have certain answers?
4 0
3 years ago
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The ratio of boys to girls at the beach cleanup was 7:8. If there were 42 boys, how many girls were there?
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7 0
3 years ago
1. The height of a missile t seconds after it has been fired is given by h=4.9t^2+44.1t. How many seconds will it take for the r
asambeis [7]

Answer:

The rocket will take 4.5 seconds to reach its maximum height.

Step-by-step explanation:

The height of a missile t seconds after it has been fired is given by h=-4.9*t²+44.1*t

This function is a quadratic function of the form f (x) = a*x² + b*x + c. In this case a=-4.9, b=44.1 and c=0

To calculate how many seconds it will take for the rocket to reach its maximum height, I must calculate the maximum of the function. The maximum of a quadratic function is the vertex of the parabola. The x coordinate of the vertex will be simply: x=\frac{-b}{2*a}. The y coordinate of the vertex corresponds to the function evaluated at that point.

In this case the x coordinate of the vertex corresponds to the t coordinate. In other words, by calculating the x coordinate of the vertex, you are calculating the maximum time t it will take for the rocket to reach its maximum height. So:

t=\frac{44.1}{2*(-4.9)}

t=4.5

<u><em>The rocket will take 4.5 seconds to reach its maximum height.</em></u>

7 0
2 years ago
Find the prime factorization of 504
BaLLatris [955]
It's not a prime number but
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4 0
3 years ago
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