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2 years ago

What expression equevalent to-3(-x+12)

Mathematics

1 answer:

bazaltina [42]2 years ago

5 0

Answer:

3x - 36

Step-by-step explanation:

-3 (-x+12)

simply the expression

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Which equation is true?

ch4aika [34]

Answer : $9x^2 - 25 = (3x - 5)(3x + 5)$

(1) $9x^2 - 25 = (3x - 5)(3x - 5)$

Use FOIL method to mulitply (3x – 5)(3x – 5)

$(3x - 5)(3x - 5) = 9x^2 - 30x + 25$

(2) $9x^2 - 25 = (3x - 5)(3x + 5)$

Use FOIL method to mulitply (3x - 5)(3x + 5)

$(3x - 5)(3x - 5) = 9x^2 - 15x + 15x - 25 = 9x^2 - 25$

(3) $9x^2 - 25 = -(3x + 5)(3x + 5)$

Use FOIL method to mulitply -(3x + 5)(3x + 5)

$-(3x + 5)(3x + 5) = -(9x^2 + 30x + 25) = -9x^2 -30x -25$

(4) $9x^2 - 25 = -(3x + 5)(3x - 5)$

Use FOIL method to mulitply -(3x + 5)(3x - 5)

$-(3x + 5)(3x - 5) = -(9x^2 - 25) = -9x^2 + 25$

So equation 2 is true

6 0

2 years ago

Read 2 more answers

The ratio of girls to boys is 4:5 if there are 27 total students how many are girls? Boys?

kompoz [17]

4/9 x 27 = girls
12 girls

5/9 x 27 = boys
15boys

4 0

3 years ago

Plzzzzzzzzzzzzzz helpppppppp meeeeeee

zepelin [54]

Y = -3/4x + 6

you write in the y=mx+c form!
m= the slope
c = the y-intercept. (it is the second number of the coordinates)

3 0

2 years ago

The class has 14 boys, 12 girls, and one teacher. What is the ratio boys to girls?

Ilya [14]

7:6, unless it wants it simplified to decimals

3 0

3 years ago

Danny travelled 327 miles on Monday. He then travelled n miles on Tuesday for a total of 578 miles. Write an equation to express

emmasim [6.3K]

Answer:

251 miles on Tuesday

Step-by-step explanation:

327 miles + n miles = 578 miles (total).

Solving this for n, we subtract 327 miles from both sides, obtaining:

n = 251 mi = distance Danny traveled on Tuesday

8 0

2 years ago