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Vikentia [17]
3 years ago
11

8x-16/x^2-13x+22 please help me I really need it

Mathematics
1 answer:
sasho [114]3 years ago
8 0
The answer is -(5x+16/x^2-22)
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Nine less than a number is no more than 8 and is no less than 3
frozen [14]

9 - x < 8 => -x < 8 - 9 => -x < -1 => x > 1

9 - x > 3 => -x > 3 -9 => -x > -6 => x < 6

So the number is between 1 and 6, notation 1 < x < 6

7 0
4 years ago
Two grandparents want to pick up the mess that their granddaughter had made in her playroom. One can do it in 15 minutes working
Crank

Answer:

  6 2/3 minutes

Step-by-step explanation:

Their rates in "jobs per hour" are ...

  (60 min/h)/(15 min/job) = 4 jobs/h

and

  (60 min/h)/(12 min/job) = 5 jobs/h

So, their combined rate is ...

  (4 jobs/h) + (5 jobs/h) = 9 jobs/h

The time required (in minutes) is ...

  (60 min/h)/(9 jobs/h) = (60/9) min = 6 2/3 min

Working together, it will take them 6 2/3 minutes.

5 0
4 years ago
The length of the hypotenuse of a right triangle is 14.5 meters. The length of one of the legs is 8.7 meters. What is the length
GenaCL600 [577]

Answer:

b=11.6m

Step-by-step explanation:

If this is a right triangle;

a^2+b^2=c^2

A and B are both LEGS, while C is the HYPOTENUSE

(8.7^2)+b^2=(14.5^2)

b^2=(14.5^2)-(8.7^2)

b^2=134.56

b=plus or minus 11.6

Because length can't be negative, it's +11.6

8 0
3 years ago
Read 2 more answers
A and b are positive integers. Find <img src="https://tex.z-dn.net/?f=-2a%2B3b" id="TexFormula1" title="-2a+3b" alt="-2a+3b" ali
lord [1]

A could be 2 while B could be 3, so -2a+3b turns into -4+9, which equals 5.

From what I know you can't really solve a a single equation with two-variables so it's just a matter of trial and error.

Just try plugging in a small number like 2 for a just to try it and you get 8b^2=72.

Divide everything by 8 to isolate b and you get that b^2=9.

Square root everything and you'll find that b=3. This is just one possible combination, I'm sure there are many more but this is obviously the one that was intended to be found.

Now that we know that a=2 and b=3 just plug them into the equation.

-2(2)+3(3)=?

-4+9=?

5

Sorry about having to use this ^ symbol, the equation maker is not working.

7 0
3 years ago
A 32 ounce bottle of fresh-squeezed fruit juice sells for $3.29. A 24-ounce bottle of the same juice sells for $1.97. Which bott
ivann1987 [24]
The 24 oz. is the better deal. For the 24 oz, each ounce is worth $.08 compared to $.10 per ounce for the 32 ounce bottle.
5 0
4 years ago
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