Remove the parentheses
x^3-9x^2+27x-27-x^3+3x^2-3x+1+7x^2=21x-28
x^2+24x-26=21x-28
x^2+24x-26-21x+28=0
x^2+3x+2=0
factor the expression
(x+2)(x+1)=0
sooo x1=-2 x2=-1
Answer:
She ran 1 mile in 15 minutes.
Step-by-step explanation:
1 hour = 60 minutes 60 / 4= 15
Answer:
Step-by-step explanation:
Hope this helps!
Answer:
- The numerical values of the area and circumference are equal when r=2
- The numerical value of the area is less than the numerical value of the circumference when r<2
- The numerical value of the area is greater than the numerical value of the circumference when r>2
Step-by-step explanation:
The formulas for area (A) and circumference (C) are ...
A = πr² = (πr)r
C = 2πr = (πr)2
Comparing numerical values, ...
when r=2, these have the same numerical value;
when r < 2, area is smaller;
when r > 2, area is larger.
Answer:
B is the answer
Step-by-step explanation: