Answer:
a
Step-by-step explanation:
7 times a number will add up to 210
Answer: the cost of tickets is 7
Step-by-step explanation:
Answer:
x 0
Step-by-step explanation:
You need each of the square roots to be positive numbers, and the only for that to happen is if the variable is 0 or a positive number.
Answer:
the answer is 1
Step-by-step explanation:
it's in the picture
(a−b)+a+(a+b)=45
⟹3a=45
a=15
a(a+b)=300
⟹15(15+b)=300
⟹225+15b=300
⟹15b=300−225
⟹15b15=7515
b=5
a−b=10⟹a=15⟹a+b=20
The three numbers are 10, 15, and 20.
Proof:
10+15+20=45✓