Answer:
42
Step-by-step explanation:
3x^2 +5x
Let x=3
3(3)^2 +5(3)
3*9 +15
27+15
42
Answer:
percentage change= 500%
Step-by-step explanation:
After diet the weight reduced = 30 pounds
Before diet her weight = 180 pounds
percentage change = { (180 - 30) ÷ 30 } × 100
= ( 150 ÷ 30) × 100
= 5 × 100
= 500 %
∴percentage change= 500%
About 48 students are girls
Step - By - Step Explanation:
63 / 4 = 15.75
15.75 x 3 = 47.25
Because you can’t have 0.25 (1/4) of a person, you round to the next number.
Hope this helps!
Answer:
12
Step-by-step explanation:
Answer:
x = 15
m∠1 = 45°
Step-by-step explanation:
2x + 15 + 135 = 180
2x = 180 - 15 - 135
2x = 30
x = 30/2
x = 15
180 - 135 = 45°
