Since the score is 21 out of an unknown number, and the percantage is 70%, you set .7 equal to the score (21/x), and solve for x
.7 = 21/x
Multiply both sides by x
.7x = 21
Divide both sides by .7
x = 30
Answer:
-(14 - 7x); 7(x - 2); 3x - 14 + 4x
Step-by-step explanation:
for -(14 - 7x) when the negative is distributed you get -14 + 7x which is still 7x - 14
for 7(x - 2) when multiplied in you get 7x - 14
for 3x - 14 + 4x when added together you get 7x - 14
Answer:
10 spaces in each direction
Step-by-step explanation:
5
!
-5--------------------!-------------------5
!
!
5
No the square root of 16 is 4 which is a whole number therefore it is rational not irrational
