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3 years ago

Identify the graph of the solution set of : x^2 -9/ x^2+6x+8

Mathematics

2 answers:

alexandr1967 [171]3 years ago

7 0

Answer: A

Step-by-step explanation:

Snowcat [4.5K]3 years ago

5 0

Answer:

The answer is the 1st one

Step-by-step explanation:

I risked my answer lucky for you i got it right :)

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Factor x3 + x2 + x + 1 by grouping. What is the resulting expression?

Svet_ta [14]

X^3 +x^2 +x +1 = x^2(x +1) + x +1 = (x^2 +1)(x +1)

hope helped

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3 years ago

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Neko [114]

Answer:

Step-by-step explanation:

52= 1/2(64 + x)

52 = 32 + 0.5x

52-32= 32-32 + .5x

20=.5x

Divide both sides by .5x

X = 40.

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3 years ago

A company can produce as many as 50 mountain bikes and as many as 60 road bikes per day. It takes 4 hours of labor to produce a

-BARSIC- [3]

4x + 5y ≤ 300

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3 years ago

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Which of the following coordinates are exactly 5 units from (2, -1)? Select all that apply.

Georgia [21]

Answer:

(-3,-1)

Step-by-step explanation:

For the answer (-2,2) you are moving 7 units. (5,3) you are moving 7 units as well. For (3,4) you are moving 6 units. By process of elimintaion, we know the answer is (-3,-1).

6 0

3 years ago

sixteen men working 9 hrs a day can complete a pice of work in 14 days .How many more men working 7 hrs a day would complete the

nordsb [41]

Answer:

<em>8 more men are needed to complete the job</em>

Step-by-step explanation:

<u>Proportions</u>

This problem can be solved by step-by-step reasoning applying proportions:

16 men working 9 hrs a day complete the job in 14 days
16 men working 1 hr a day complete the job in 14*9 days

The above statement stands because the fewer hours of work, the more time the job needs to be completed. Let's continue.

1 man working 1 hr a day complete the job in 14*9*16 days

The same reasoning applies here, fewer men=more days.

Now for the second condition. Increase the hours/day:

1 man working 7 hrs a day complete the job in 14*9*16/7 days

More hours/day=less days to complete the job

x men working 7 hrs a day complete the job in 14*9*16/(7*x) days

We know this last time is 12 days, thus:

$\displaystyle 12=\frac{14*9*16}{7*x}$

Solving for x:

$\displaystyle x=\frac{14*9*16}{7*12}=\frac{2016}{84}=24$

24 men are needed now, this is an increase of 24-16=8 more men

8 more men are needed to complete the job

7 0

3 years ago