Answer:
1. D
2. x=65
Step-by-step explanation:
Hi!
Your answer is D because 78 is 120% of x
120% in decimal point is 1.2.
So it's 1.2x is the same as 120% of x
For question 8:
1.2x=78
Isolate x by divide 1.2 on both sides
78/1.2=65
It's B.) The student’s answer is not reasonable. Estimation: 170 + 90 = 260
Answer:
C≈402.12in
Step-by-step explanation:
The circumference of a circle is equal to pi times the diameter. The diameter is two times the radius, so the equation for the circumference of a circle using the radius is two times pi times the radius
Answer:
-3
Step-by-step explanation:
-5(2x+1)=25
-10x-5=25
-10x=25+5
-10x=30
x=-3
