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kykrilka [37]
3 years ago
14

The formula h = 120t - 16t

e" class="latex-formula"> gives the height h in feet of an object t seconds after it is shot upward from Earth’s surface with an initial velocity of 120 ft per second. What will be the height of the object after 6 seconds?

Mathematics
1 answer:
rosijanka [135]3 years ago
5 0

Answer:

C

Step-by-step explanation:

So we have the function:

h(t)=120t-16t^2

Where h(t) measures the height after t seconds.

To find the height of the object after 6 seconds, substitute 6 for t. So:

h(t)=120(6)-16(6)^2

Evaluate. Square:

h(t)=120(6)-16(36)

Multiply:

h(6)=720-576

Subtract:

h(6)=144

So, the height after six seconds of the object is 144 ft.

Our answer is C.

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Answer:

22.5 pages per week

Step-by-step explanation:

Considering that After 2 weeks, he has read

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read 135 pages

Difference in weeks = 6-2=4 weeks

Difference in pages=135-45=90

Rate per week will be 90÷4=22½ pages per week

To prove this

If 1 week is 22½

2 weeks will be 2*22½=45

6 weeks will be 6*22½=135

Therefore, the reading rate is 22.5 or 22½ pages per week

4 0
3 years ago
You have 3 online accounts in three different banks valued at: bank "A" = $250.67, 12% interest, bank "B" $765.13, 7% interest,
gregori [183]

Answer:

\$882.89

Step-by-step explanation:

we know that

The simple interest formula is equal to

I=P(rt)

where

I is the Final Interest Value

P is the Principal amount of money to be invested

r is the rate of interest  

t is Number of Time Periods

in this problem we have

Bank A

t=1\ years\\ P=\$250.67\\r=12\%=12/100=0.12

substitute in the formula above

I=250.67(0.12*1)=\$30.08

Bank B

t=1\ years\\ P=\$765.13\\r=7\%=7/100=0.07

substitute in the formula above

I=765.13(0.07*1)=\$53.56

Bank C

t=1\ years\\ P=\$28,500.36\\r=9\%=9/100=0.09

substitute in the formula above

I=28,500.36(0.09*1)=\$2,565.03

Find the average interest gained from the three accounts in one year

[\$30.08+\$53.56+\$2,565.03]/3=\$882.89

3 0
3 years ago
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3 years ago
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Answer:

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