Question

Solve for x: -2(x + 3) = -2(x + 1) - 4.

A.)2

B.) 3

C.) All real numbers

D.) No solution

Answer 1

-2(x + 3) = -2(x + 1) - 4 --- distribute through the parenthesis
-2x - 6 = -2x - 2 - 4 --- combine like terms
-2x - 6 = -2x - 6
they are the same, therefore, there are infinite solutions. C -- all real numbers.

Answer 2

C

Answer 3

Can you help me with others

Answer 4

sure....what ya got ?

Answer 5

Solve for x: 3 over 4 x + 5 over 8 = 4x

x = __________________ Write your answer as a fraction in simplest form. Use the "/" symbol for the fraction bar.

Answer for Blank 1:

Answer 6

(3/4)x + 5/8 = 4x --- is this your problem ?

Answer 7

yes

Answer 8

Solve for x: 3(x + 1) = -2(x - 1) - 4.

A.) 1

B.) -1

C.) -5

D.) -25

Answer 9

(3/4)x + 5/8 = 4x
5/8 = 4x - 3/4x
5/8 = 16/4x - 3/4x
5/8 = 13/4x
(5/8) / (13/4) = x
5/8 * 4/13 = x
20/104 = x
5/26 = x
check..
3/4(5/26) + 5/8 = 4(5/26)
15/104 + 5/8 = 20/26
15/104 + 65/104 = 20/26
80/104 = 20/26
10/13 = 10/13 (correct)
solution is : x = 5/26

===============
3(x + 1) = -2(x - 1) - 4
3x + 3 = -2x + 2 - 4
3x + 3 = -2x - 2
3x + 2x = -2 - 3
5x = -5
x = -1

Answer 10

sorry it took so long..I was having a little trouble with the first one. Do you have any questions ?

Answer 11

yes

Answer 12

The triangle below has a total perimeter of 450 cm.

picture of a triangle with sides 128 and 150. Third side unknown

Write an equation and solve it to find the length of the longest side of the triangle.

A.)128x + 150 = 450; x = 2.34 cm

B.) x + 278 = 450; x = 172 cm

C.) 2x + 278 = 450; x = 86 cm

D.) 150x + 128 = 450; x = 2.15 cm

Answer 13

Solve for x: the quantity of x plus 16 all over 3 = 3x

A.) x = -7

B.) x = -13

C.) x = 8

D.) x = 2

Answer 14

P = A + B + C
450 = 128 + 150 + C
450 = 278 + C
450 - 278 = C
172 = C
ANSWER : B
============
(x + 16)/3 = 3x --- multiply by 3
x + 16 = 9x
16 = 9x - x
16 = 8x
16/8 = x
2 = x
ANSWER : D

Answer 15

Thank you

Answer 16

no problem :)