MATHEMATICS MIDDLE SCHOOL

For which value(s) of x will the rational expression below be undefined?Check all that apply.
(x-3)(x+6)
x + 7

Answers

Answer 1
Answer:

Question:

For which value(s) of x will the rational expression below be undefined? Check all that apply.

(x-3)(x+6)/x+7

Answer:

For x = -7 the rational expression is undefined

Solution:

Given rational expression is:

((x-3)(x+6))/((x+7))

We have to find the value of x for which the rational expression becomes undefined

A rational expression is undefined when the denominator is equal to zero

Here, the denominator becomes zero when x = -7

Substitute x = -7 in given

((-7-3)(-7+6))/((-7+7)) = (-10 * -1)/(0) = (10)/(0)

Thus for x = -7 the rational expression is undefined

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Which equation could be used to find the number of days, d, in h hours?

Answers

there are a total of 24 hours in a day.
lets say for example we go through 12 hours.
that means we went through half a day.
we need an equation that if you plug in 12 into hours, you get 1/2.
You get that with equation B

Answer:

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What fraction of a full turn is one degree

Answers

1/360 
Hope this helps!!

1/360

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What is 310,763,136 in word form

Answers

three hundred and ten million seven hundred and sixty three thousand one hundred and thirty six
Thirty one million seven hundred sixty three thousand one hundred and thirty six

20 dollars for 6 books

Answers

3 book for 10 dollars??
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A sandbag is released from a hot air balloon that is 400ft above the ground. Using the falling object model, h = –16t2 + s, where h = height in feet, t = time in seconds, and s = initial height in feet, how long will it take for the sandbag to hit the ground?A.
25 seconds
B.
4 seconds
C.
5 seconds
D.
20 seconds

Answers

Answer:

It takes 5 seconds for the sandbag to hit the ground

Explanation:

Given:

Height at which the sand bag is released from the hot air balloon= -400 f t

To find:

Time taken for the sandbag to hit the ground, t =?  

Solution:

The initial height =s

Initially the height will be 0

Hences=0

the falling object model equation  

h=-16 t^(2)+s

Substituting the values we get,

h=-16 t^(2)+s

400=16 t^(2)

t^(2)=(400)/(16)

t^(2)=25

t=√(25)

t=5 \text { seconds }

Result:

Thus it takes 5 seconds for the sandbag to hit the ground

The perimeter of a parallelogram is 72 meters.The width of the parallelogram is four meters less than its length. Find the length and the width of the parrellelogram

Answers

Parallelogram have 4 sides.

Use the distributive property. 2 multiply the last and negative 4 in the parentheses.
2l + 2(l - 4) = 72 m

Combine Like terms
2l + 2l - 8 = 72 m
4l - 8 = 72 m
Get l all by itself by adding 8 to both sides
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+8. +8

Divide both sides by 4
4l = 80
4. 4

l= 20

The width of the parallelogram is four meters less than its length.

4 sides
2 length = 20
2 width = 16

I got 16 by subtracting 4 from 20

Comment if you need any other help :)
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