3 years ago

Solve the equation and justify each step. 8.2 - 9 = 7x + 6 - 2x

Mathematics

1 answer:

Snezhnost [94]3 years ago

8 0

Answer:

x = 5

Step-by-step explanation:

8x-9=7x+6-2x

We move all terms to the left:

8x-9-(7x+6-2x)=0

We add all the numbers together, and all the variables

8x-(5x+6)-9=0

We get rid of parentheses

8x-5x-6-9=0

We add all the numbers together, and all the variables

3x-15=0

We move all terms containing x to the left, all other terms to the right

3x=15

x=15/3

x = 5

You might be interested in

Y-intercept 3 and slop -6

professor190 [17]

Answer:

y= -6x+3

Step-by-step explanation:

6 0

4 years ago

Which expression is the result of subtracting (Z2-3i) from (Z1 + 2)? A B C D

Reika [66]

Answer:

im not sure but ill try i think A

4 0

3 years ago

Read 2 more answers

A theatre holds 1200 people when full.If it is 80% full,how many people are present

CaHeK987 [17]

0.8 times 1200 is 960, which is the number of people when the theatre is 80% full.

4 0

3 years ago

If m<1=105 and m<4=115, then m<6= A.75 B.40 C.50 D.60

RSB [31]

The answer is 40 so B

4 0

3 years ago

Convert the function into intercept form. Show your work. y=-x^2+5x+36

UkoKoshka [18]

Y = -x2 + 5x + 36 → y = -(x2 -5x -36)

→ y = -(x2 - 9x +4x - 36)

→ y = -[x(x-9) + 4(x - 9)]

→ y = -(x - 9)(x + 4)

Your answer would be y=-(x-9)(x+4).

7 0

3 years ago