12. solve 7x - 5x - 3 = x + 4.
o ax-8
b. x 6
c. x -10
d. x= 7

D. X=7

Step-by-step explanation:

Use the order of operations to solve this problem.

First, combine like terms.

7x-5x=2x

Our equation is now 2x-3=x+4

Now, add 3 to both sides.

Our equation is now 2x=x+7

Subtract x from both sides.

x=7

The answer is D. X=7

Feel free to ask any questions.

Hope this helps!

answer: a and c are correct

step-by-step explanation:

the +5 is the vertical translation

the added negative symbol in front is the reflection over the y-axis

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b