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2 years ago

Pls help i really need it

Mathematics

2 answers:

o-na [289]2 years ago

8 0

Answer:

Step-by-step explanation:

Since a <em>fraction</em> is a division problem, you can do every answer and compare them until you get them in order, which D is the most reliable.

laila [671]2 years ago

3 0

The answer to this question is D

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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

Jef put a small box that is 12 inches long, 8 inches wide, and 4 inches tall inside a box that is 20 inches long,15 inches wide,

alexira [117]

The answer can be found by subtract the volume of the small box from the volume of big box.

Volume of the small box:
12*8*4= 384 inches cube

Volume of the big box:
20*15*9= 2700 inches cube

The space left:
2700 - 384 = 2316 inches cube

8 0

3 years ago

Please help!!! all these questions are due today

elena-s [515]

Did you figure out the answer yet?

6 0

3 years ago

Read 2 more answers

Please answer. find the x-intercept: , find the y-intercept.

-Dominant- [34]

Answer:

x-intercept is 3, y-intercept is -10

Explanation:

Those are the points they intercept the axises

4 0

3 years ago

Y=-1/4x+6 when y equals 4

timofeeve [1]

Answer:

Step-by-step explanation:

Y = -1/4x+6, when y= 4

Same as saying

4 = -1/4x+6 , where y = 4

Multiply both sides by (4x+6)

4(4x+6) = -1

Opening the parentheses

16x + 24 = -4

16x = -4-24

16x = -28

Divide both sides by 16

X = -28/16

X = - 7/4

Ans = -7/4

8 0

4 years ago