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docker41 [41]
3 years ago
7

Please help and show work!!

Mathematics
1 answer:
leva [86]3 years ago
4 0

-3x+9y =18

add 3x to each side

9y = 3x+18

divide by 9

y = 3/9 x +18/9

y = 1/3 x+2

the slope is 1/3

the y intercept  is 2

-3x+9y =18  

let y=0 to find the x intercept

-3x=18

divide by -3

x=-6

the x intercept is -6

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Please help meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
Jobisdone [24]

Answer:

2000 ft x 2= 4000 ft

So the answer is 4000 ft

5 0
3 years ago
Find the sun of the interior angles for each polygon
sergeinik [125]

Answer:

360

1080

Step-by-step explanation:

We can find the sum of the interior angles of any regular polygon by using this formula

(n - 2) * 180

where n = number of sides

For the square: the square has 4 sides

To find the sum of the interior angles we simply substitute 4 for n in the formula

Formula: (n - 2) * 180

Substitute 4 for n

(4 - 2 ) * 180

Subtract 4-2

2 * 180

Multiply

= 360

The sum of the interior angles of the first polygon is 360

For the second one:

We will repeat this exact process the only difference is the value of "n"

The polygon shown has 8 sides

So to find the sum of the interior angles we simply substitute 8 for n in The formula

Formula (n - 2) * 180

Substitute 8 for n

(8 - 2) * 180

Subtract 8 - 2

6 * 180

Multiply

= 1080

The interior angles of a 8 sided figure will add up to 1080

7 0
3 years ago
Factor The Trinomial<br><br> 6x^2 + 24x - 72<br><br> Show work/steps
Ymorist [56]

6x² + 24x - 72

Divide all the terms by the greatest common of factor of 6. Makes factoring easier. We will need to put this 6 on at the end so keep it in mind.

(6x² + 24x - 72) / 6 = x² + 4x - 12

Your simplified equation is x² + 4x - 12

Now to factor we must find out what two factors of - 12 can be added together to equal 4. The factors are 6 and -2:

x² - 2x + 6x - 12

Now we must group and factor.

(x² - 2x) + (6x - 12)

We can pull an x out of the first binomial because both terms have that in common:

x(x - 2) + (6x - 12)

We can pull a 6 out of the second binomial for the same reason:

x(x - 2) + 6(x - 2)

The terms inside the parentheses match each other, this means (x- 2) is one of the factors of the original trinomial. The other comes from the terms on the outside x and + 6. Put them together, (x + 6)

So your factors are (x - 2)(x + 6); this isn't it though. We need the 6 from the top, the one we divided out to make factoring easier. We will put it on the outside of whichever factor you list first so that your final answer reflects that to get back to the original trinomial, you would have to multiply the whole thing by 6.

Your final answer is:

6(x - 2)(x +6)

8 0
3 years ago
Tara would like to finish 2/5 of her book by next friday if the book has 203 pages about how many pages does she need to read
Trava [24]
Tara needs to read 81 pages by next friday.

First, divide the pages of the book by 5.
203 ÷ 5 = 40.6
Then, multiply the answer by 2.
40.6 x 2 = 81.2
Now, round down.
81 pages.

7 0
3 years ago
Help it’s due 10:20 pls anyone help $!!!
ioda

Answer:

4.3 hours

Step-by-step explanation:

Add all of the fractions to get

7.7

and then simply do

12 - 7.7

7 0
2 years ago
Read 2 more answers
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