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3 years ago

PLZZ ANSWERPLZ PZLZZZZ

Mathematics

1 answer:

LenKa [72]3 years ago

8 0

The answer is 2 and 1/8

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PLEASE HELP 25PTS!! Select the correct answer from each drop-down menu.

lions [1.4K]

Answer:

The quality control facility operates for 10 hours each day.

Step-by-step explanation:

The given function models the number of cars that are put through a quality control test each hour at a car production factory.

The given function is

$c(t)= -t^2+8t+20$

We need to find the number of hours does the quality control facility operate each day.

Rewrite the given function it factored form.

$c(t)= -t^2+(10t-2t)+20$

$c(t)= (-t^2+10t)+(-2t+20)$

Taking out the common factors from each parenthesis.

$c(t)= -t(t-10)-2(t-10)$

$c(t)= (t-10)(-t-2)$

$c(t)=-(t-10)(t+2)$

The factored form of given function is c(t)=-(t-10)(t+2).

Equate the function equal to 0 to find the x-intercept.

$0=-(t-10)(t+2)$

$t-10=0\Rightarrow t=10$

$t+2=0\Rightarrow t=-2$

Number of hours cannot be negative. So from t=0 to t=10 quality control facility operate the cars.

Therefore the quality control facility operates for 10 hours each day.

7 0

3 years ago

What is the difference<br> between length and capacity?

AVprozaik [17]

Answer:

length increase by the number of character append to the string. The capacity is increased only when the current capacity is exceeded by the new length

Step-by-step explanation:

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3 years ago

Jenny is diving into a swimming pool from a diving board. The expression below represents Jenny's vertical height x, in feet, ab

fredd [130]

Answer:

Step-by-step explanation:

The projectile motion of Jenny's dive can be represented by $-at^2 + v_0t + h_0$ where a is acceleration, v_0 is velocity, t is time, and h_0 is initial height.