You haven't posted the answer choices, but Trey got the wrong answer.
The denominators must be the same in order to add the fractions. In this case, the denominators 15 and 10 are different. We cannot add in this current state.
Adding the denominators is a common mistake which you should practice to avoid.
Answer:
n>−12
Step-by-step explanation:
Add 20
to both sides of the inequality.
n>−32+20
Add −32
and 20
.
n>−12
The result can be shown in multiple forms.
Inequality Form:
n>−12
Interval Notation:
(−12,∞)
Answer:
Radius is the half of a diameter
Answer:
(x+2)² - 11
Step-by-step explanation:
Regroup terms
x² + 4x - 7
(x² + 4x) - 7
Complete the square
coefficient of x term: 4
divide coefficient in half: 2
square it: 2²
use 2² to complete the square:
(x² + 4x) - 7 = (x² + 4x + 2²) - 2² - 7 = (x+2)² - 11
Answer:
she runs 10.5 in 75 min
Step-by-step explanation: