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3 years ago

I really need help on this quiz and I have to show work x(8-3x)(x+2)=0

Mathematics

2 answers:

Sedaia [141]3 years ago

4 0

Answer:

The answer is 8/3 I think

valkas [14]3 years ago

4 0

Answer:

-3x^3 + 2x^2 + 16x

Step-by-step explanation:

x(8 - 3x)(x + 2) = 0

(8x - 3x^2)(x + 2) = 0

8x^2 + 16x − 3x^3 − 6x^2

-3x^3 + 2x^2 + 16x

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Write a word problem that involves comparing unit rates

uysha [10]

Last month, my house used 1,740 kilowatt-hours of electrical energy,
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3 years ago

PLEASE HELP I HAVE 10 MORE MINUTES TO FINISH THIS!!!

evablogger [386]

Answer:

Step-by-step explanation:

add 5+3 then add 1/2 plus 3/4

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3 years ago

If a model scale is 1 foot to 5 feet, how long will the model be

dalvyx [7]

The model will be 5 times longer that stated.

E.g if the model is said to be 10 feet long using this scale.

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3 years ago

A box contains 8 two-inch screws. Four have a Phillips head and 4 have a slotted head. In how many ways can 4 screws be chosen s

hammer [34]

Answer:

There are $6\cdot 6=36$ different ways to choose 4 screws such that 2 have a Phillips head and 2 have a slotted head.

Step-by-step explanation:

If 4 screws must be chosen so that 2 have a Phillips head and 2 have a slotted head, then you have to choose 2 screws with a Phillips head from 4 screws with a Phillips head and 2 screws with a slotted head from 4 screws with a slotted head.

You can choose 2 screws with a Phillips head from 4 screws with a Phillips head in

$C^4_2=\dfrac{4!}{2!(4-2)!}=\dfrac{4!}{2!\cdot2!}=\dfrac{1\cdot2\cdot3\cdot4}{1\cdot2\cdot1\cdot2}=6$

different ways.

You can choose 2 screws with a slotted head from 4 screws with a slotted head in

$C^4_2=\dfrac{4!}{2!(4-2)!}=\dfrac{4!}{2!\cdot2!}=\dfrac{1\cdot2\cdot3\cdot4}{1\cdot2\cdot1\cdot2}=6$

different ways.

In total there are $6\cdot 6=36$ different ways to choose 4 screws such that 2 have a Phillips head and 2 have a slotted head.

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2 years ago

Find the value of x<br><br>2x degrees and 3x degrees ..<br>they are supplements angles

oee [108]

Answer:

2x+3x=180°

that is 5x=180°meaning x=32°

4 0

3 years ago