Answer:
X+4
Step-by-step explanation:
8+3x=25-x
3x+x=24-8
4x+16
Step-by-step explanation:
problem → 2^x = 4, solve for x
⇒2^x=4
⇒2^x=2^2
⇒x=2
Answer:
b, Helen should have added 17 to both sides of the equation
Step-by-step explanation:
just took quiz and got it right so it will help u guys too.!!!
We are given that there are a total of 78 students. If we set the following variables:

Then, the sum of all of these must be 78, that is:

Since there are 15 in chemistry and physics and 47 in chemistry, we may replace that into the equation and we get:

Simplifying:

Now we solve for P by subtracting 62 on both sides:

Therefore, there are 16 students in physics
Well, mode is the number that occurs most, so the answer would be 7, since that is the most appearing number.