Answer:
The Answer is D
Step-by-step explanation:
All you do is add both equations 3^x+10x+2x-4
then you add the like varibles which is 10x+2x=12x
So, the answer is 3^x+12x-4
Answer:
18 and 20, 4
Step-by-step explanation:
Math reasoning 1:
Set the first number as x and the other one as x+2 because it is a consecutive even number.
x+x+2=38
2x=36
x=18
18+2=20
The 2 consecutive numbers are 18 and 20
Problem solving 1:
Write out equation first, set the unknown number as x
5+x=9
x=4
Answer:
55
Step-by-step explanation:
CBZ+ZBA=CBA
x=6
9(6)+1=55
The system is "inconsistent".
The first and last equations describe parallel lines:
x +2y +3z = 12
x +2y +3z = 60
There are no values of x, y, and z that can satisfy both equations.