Solve the equation graphically: 12x-7y=-6 5x-7y=27

The Average temperature in Orlando in July is a 85 degrees .Last Wednesday, it was 90 degrees today it was 15 degrees cooler tha

il63 [147K]

The temperature today is 75 degrees. 90-15=75

4 0

4 years ago

Read 2 more answers

(3x^3+4x^2)+(3x^3-4x^2-9x)

zysi [14]

Answer:3x • (2x2 - 3)

Step-by-step explanation:

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "x2" was replaced by "x^2". 3 more similar replacement(s).

STEP

1

:

Equation at the end of step 1

((3•(x3))+(4•(x2)))+(((3•(x3))-22x2)-9x)

STEP

2

:

Equation at the end of step

2

:

((3•(x3))+(4•(x2)))+((3x3-22x2)-9x)

STEP

3

:

Equation at the end of step

3

:

((3 • (x3)) + 22x2) + (3x3 - 4x2 - 9x)

STEP

4

:

Equation at the end of step

4

:

(3x3 + 22x2) + (3x3 - 4x2 - 9x)

STEP

5

:

STEP

6

:

Pulling out like terms

6.1 Pull out like factors :

6x3 - 9x = 3x • (2x2 - 3)

Trying to factor as a Difference of Squares:

6.2 Factoring: 2x2 - 3

Theory : A difference of two perfect squares, A2 - B2 can be factored into (A+B) • (A-B)

Proof : (A+B) • (A-B) =

A2 - AB + BA - B2 =

A2 - AB + AB - B2 =

A2 - B2

Note : AB = BA is the commutative property of multiplication.

Note : - AB + AB equals zero and is therefore eliminated from the expression.

Check : 2 is not a square !!

Ruling : Binomial can not be factored as the

difference of two perfect squares

Final result :

3x • (2x2 - 3)

5 0

4 years ago

Kerry invited 23 friends to his pool party. They played a game where everyone had to separate into groups. Each group had the sa

Alex17521 [72]

Answer:

A, C, and E are the answers

Step-by-step explanation:

6 0

2 years ago

100/225 square feet of your bakery will be used as your storefront, where customers come to visit. the rest will be for storage

Angelina_Jolie [31]

Okay, so the answer is 5/9. “Someone” was correct. The subtracting of 100 from 225 came from the 100 already being used out of that 225. If you subtract that, you’re left with how much space left. Place those back into the fraction and simplify and you get our answer.

5 0

4 years ago

Read 2 more answers

For all parts of this question, use the function y + 2 = 3(x + 4)

vekshin1

i would start by simplifying the equation to get y by itself, you don't need to do this, but it makes it a little easier

y + 2 = 3 ( x + 4) distribute the 3 through the parenthesis

y + 2 = 3x + 12. subtract 2 from both sides

y = 3x +10

now to fill in the chart simply plug in the value of x to see what value of y it produces

y = 3(-2) +10

y = -6+10

y = 4

(-2,4)

y = 3(0) + 10

y = 0 + 10

y = 10

(0,10)

y = 3(2)+10

y = 6 + 10

y = 16

(2,16)

y = 3(4) + 10

y = 12 + 10

y = 22

(4,22)

8 0

3 years ago