Simplify by factorising first
Simplify by factorising first - 1

Answers

Answer 1
Answer:

Answer:

x+8

Step-by-step explanation:

Simplify the numerator

list the factors of 16

16: 1, 2, 4, 8, 16

look for two factors that add up to the b value

in this case it is 18

by looking at the factors 2 and 8 add up 10

so you can rewrite the numerator as x^(2)+2x+8x+16

Split the trinomial into two separate binomials each having one of the factors that add up to 10

So it should be x^(2) +2x and 8x+16

Factor both binomials

you can factor an x from the first one

Then it is x(x+2)

Factor an 8 from the second one

8(x+2)

So it should be x(x+2)  8(x+2)

This can rewritten as (x+8)(x+2)

So now you have ((x+2)(x+8))/(x+2))

simplify it by canceling out the two (x+2)'s

this is because (x+2)/(x+2) is 1

Finally you get x+8


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An exponent shows how many times the base number is multiplied by itself. a. True
b. False

Answers

The answer is a. true.

11 3 ÷ 11 3 = 1,331
a. True
b. False

Answers

false cause a number dived by itself = 1

Answer:

False

Step-by-step explanation:

they are the same number and any number divided by itself equals out to 1

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Find Domain of the function

square root of (x-8)/x(x-9)

Answers

Domain of your function is D = (0,8]U(9, +oo).

Yo sup??

Domain refers to the permissible values of x

since the given function won't be defined at x=0 and x=9

Also the value of the given function should be greater than 0 or else the square root function won't be defined

therefore the domain of the function is :

R+-{0,9}

Hope this helps.

Explain one thing you need to be careful with when writing a proportion.

Answers

For this case, we have that by definition, the proportions can be expressed in different ways. Example, if we have a dog and three cats:

75%: It's percentage

0.75: In decimal (75% are cats)

\frac {3} {4}: In fraction. (There are \frac {3} {4} of cats)

3: 1: Using ":" to separate sample values. (For every three cats there is a dog)

Care should be taken with the proportions, always multiplying the numbers in the proportion by the same value.

Example:3: 1 = 3 * 2: 1 * 2 = 6: 2

Answer:

Care should be taken with the proportions, always multiplying the numbers in the proportion by the same value.

What is 1000 times 80%

Answers

800

(80% = .8, 1000 x .8 = 800)
80%×1000
:80/100×1000
80000/100
800

1. Y = x + 6
Y = 2x
A) (6, 12)
B) (-12, -6)
C) (-6,-12)
D) (2,4)

Answers

the answer is a, if x = 6 and y = 12, you get 6+6=12 and 2*6=12
 Hope this helps!