MATHEMATICS HIGH SCHOOL

Solve for all values of x by factoring.
x^2+6x+4= -2x+4

Answers

Answer 1
Answer:

Answer:

0,-8

Answer explanation:

x^2+6x+4=-2x+4

or, x^2+6x+4+2x-4=0

or, x^2+8x=0

Therefore, x(x+8)=0

Either,

x=0

or,

x+8=0

x=-8

hence,x=0, -8

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How do I distribute 9 - (8r +5)
The - part confuses me

Answers

Answer:

you distribute the - not the 9

Step-by-step explanation:

so your problem would be

9-8r-5

( act as if there is a one in front of the negative sign)

hope this helps :)

approximate the volume of the backpack that is 17in × 12 in × 4inif you need a picture I'll try to send it to help

Answers

To find volume you multiply all three dimensions by one another. We can approximate this by multiplying the smaller ones first.

12*4=48    Now multiply 48 by 10.

48*10=480  We still have 7 to deal with, so we can multiply 48 by 2 and then by 5.

48*5=240
48*2=96

Now add the three together.

480+240+96=816.

Your answer is 816.
The formula for volume would make the equation 17" x 12" x 4", which would make it 816 cubic inches. 

-3a+6b=a+4b I need to solve this please.

Answers

Answer:

a*2=b

Or

a=0, b=0

Step-by-step explanation:

if a=0 and b=0, then 0=0, it'd be correct, but I'm sure that's not the answer they intend you to pick. You should still put that as one of the answers, however.

-3a+6b=a+4b

+3a     +3a

6b=4a+4b

-6b     -6b

0=4a-2b

/2 /2  /2

0=2a-b

so, we now know that b is twice the amount that a is, and actually, that's the solution for the entire thing.

So, the answer is a*2=b, because the equation works for any set of numbers, as long as it follows this rule.

How many grams are in 15 kilograms? 1.5 150 1,500 15,000

Answers

Answer:

The last option 15,000 grams is correct.

Step-by-step explanation:

How many grams are in 15 kilograms?

We must know the relation between kilograms and grams.

1 kg = 1000 grams.

Now we have been asked to calculate the grams in 15 kilograms.

So, 15 kilograms has = 15*1000=15000 grams

Therefore, the last option 15,000 grams is correct.
15000 because 15kg x 1000 = 15000g

On one of the day you went to the gym, the ratio of men to women was 3 : 2. If 120 men used the gym, how many women were there?

Answers

Answer

Find out the  how many women were there .

To prove

Let us assume that the x is the scalar multiple of men and women.

As given

The ratio of men to women was 3 : 2.

Than

The total number of men = 3x

The total number of women = 2x

As given

If 120 men used the gym.

thus

120 = 3x

x = (120)/(3)

x = 40

The total number of women = 2 × 40

                                               = 80

Therefore 80 women were there in the gym .
The answer is 120 : 80, so there is 80 women.

3/2 is equal to 120/80.

Y=8 when x=20 find y when x= 30

Answers

Answer:

y=13

Step-by-step explanation:

if x=20 when y=8 (we can creat equation )

x=2y+4 (you can prove that the equation is correct by substitute )

so the question is if x=30 find the value of y

30=2y+4

30‒4=2y

26=2y

26/2=2y/2

13=y

i hope this helps you
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