Answer:
x = 11
Step-by-step explanation:
Given the expression;
5x+2y=67 ...1
x=3y−7 ....2
Substitute 2 into 1
5(3y-7)+2y = 67
15y - 35 + 2y = 67
17y = 67+35
17y = 102
y = 102/17
y =6
Recall that x = 3y - 7
x = 3(6) - 7
x = 18 - 7
x = 11
Hence the value of x is 11
Answer:
A
Step-by-step explanation:
So percent is x/100
total used/total possible=30.7/2870=0.01069 or 0.01069/1 round up and get 0.017
percent is x/100 so to convert 0.0107/1 to x/100 you mutiply the whole thing by 1 or 100/100 so
1.07% is used
Answer:
A = 3.14 yd^2
Step-by-step explanation:
The circumference is given by
C = 2 * pi * r
Letting pi be approximated by 3.14
6.28 = 2 * (3.14) *r
6.28 = 6.28 r
Divide each side by 6.28
6.28/6.28 = 6.28r/6.28
1=r
We can find the area by
A = pi r^2
A = 3.14 (1)^2
A = 3.14