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adelina 88 [10]
3 years ago
11

Perform each indicated operation

Mathematics
1 answer:
MissTica3 years ago
4 0

Answer: \frac{x+6}{x-4}

Step-by-step explanation:

First you need know some general formuals of factorization such as

x^3+y^3=(x+y)(x^2-xy+y^2) so you have x^3+64=X^3+4^3=(x+4)(x^2-4x+4^2)

And, x^2-y^2=(x-y)(x+y) so you have 2x^2-32=2(x^2-16)=2(x^2-4^2)=2(x+4)(x-4)

If you use them, then you can modify your equations such as

\frac{x^3+64}{2x^2-32} ÷ \frac{x^2-4x+16}{2x+12} = \frac{(x+4)(x^2-4x+4^2)}{2(x+4)(x-4)} ÷ \frac{x^2-4x+16}{2(x+6)}  =  \frac{(x+4)(x^2-4x+4^2)}{2(x+4)(x-4)} . \frac{2(x+6)}{{x^2-4x+16}} = \frac{1}{x-4}.\frac{x+6}{1}=\frac{x+6}{x-4}

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Serga [27]

Answer:

A)y=9x+5

Step-by-step explanation:

If x=-1, y=-4,

  y=9*-1+5=(-9)+5=-4

If x=0, y=5,

  y=9*0+5=5

3 0
2 years ago
I dont understand this question
mamaluj [8]
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8 0
3 years ago
Use the Distributive Property to expand 6​(8x ​- 2y) -3.
ArbitrLikvidat [17]

Answer:

48x − 12y−3

Step-by-step explanation:

Distribute:

(6)(8x) + (6)(−2y) + −3

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5 0
3 years ago
Malik works at a hardware store for $12 per hour and as a lifeguard for $18 per hour. He needs to earn at least $280 per week, b
Arte-miy333 [17]

Answer:

The system of inequalities is equal to

12x+18y\geq280

x+y\leq 20

Step-by-step explanation:

Let

x-----> the number of hours that Malik works at a hardware store

y-----> the number of hours that Malik works as a lifeguard

we know that

12x+18y\geq280 -----> inequality A

x+y\leq 20 -----> inequality B

Using a graphing tool

The solution is the shaded area

see the attached figure

8 0
3 years ago
Find the perimeter of the figure to nearest hundredth<br> 20mm, 20mm, 16mm
bearhunter [10]

Answer:

The perimeter is 56mm

Step-by-step explanation:

N/B: the figure is not given, nevertheless we can infer that the figure is a triangular figure given that the lengths provided is just three.

So the perimeter is the distance around the object.

Perimeter =20+20+16= 56mm

Also see attached a rough sketch for your reference.

8 0
3 years ago
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