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PIT_PIT [208]
3 years ago
8

PLEASE HELP ME I ONLY HAVE 20 MINUTES!!!!

Mathematics
1 answer:
Over [174]3 years ago
7 0

h(x) = 40x - 16x^2\\h(x) = 15\\40x - 16x^2 = 15\\-16x^2 + 40x - 15 = 0\\

Using the quadratic formula we get

x_1 = 0.5\\x_2 = 2.04

Therefore the tennis ball is at least 15 feet above the ground from 0.5 seconds to 2.04 seconds

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If you invest $823 at an interest rate of 3% every 6 months, how much money will you have after 9 years
zubka84 [21]

Answer:

Step-by-step explanation:

The compounding formula for this is

A(t)=P(1+\frac{r}{n})^{nt} where A(t) is the amount after all the compounding is done, P is the initial investment, r is the interest rate as a decimal, n is the number of times the interest compounds per year, and t is the time in years.  For us, our n is 2, since the money compounds every 6 months, and 6 months goes into 1 year 2 times.  Our formula then is:

A(t)=823(1+\frac{.03}{2})^{(2)(9)} which simplifies a bit to

A(t)=823(1+.06)^{18} which simplifies a bit more to

A(t)=823(1.06)^{18}

Raise 1.06 to the power of 18 and then multiply the 2 numbers together:

A(t) = 823(2.854339153) so

A(t) = 2349.12

7 0
3 years ago
Use distributive property to solve, show all steps <br> 3(2x-6)
zlopas [31]

Answer:

6x-18

Step-by-step explanation:

First we multiply everything in the parentheses by 3

3×2x=6x

3×(-6)=-18

And now we put it together-

6x-18

4 0
3 years ago
Read 2 more answers
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Polynomial: 3x^4 + 5x - 4; Divisor: x - 1​
irina [24]

Answer:

3x³+3x²+3x+8+\frac{4}{x-1}

Step-by-step explanation:

You can use synthetic division for this problem since the divisor is in (x-a) form. The fraction is the remainder over the divisor.

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133/1.75 = $76 :)
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