Answer:
Step-by-step explanation:
Lets age of father be x and age of son be y
x+5=3(y+5)
x=3y+15-5
x=3y+10
x-5=7(y-5)
3y+10-5=7(y-5)
3y+5=7y -35
35+5= 7y-3y
40=4y
y=10 years son`s age
X- 10=-2
X-4=4
Hop that helps
Answer:
x is 76
Step-by-step explanation:
im pretty sure, i just sloved it
Answer:
For question 5 the correct formula is C=πd
For question 6 the correct formula is C=2πr
For question 7 the answer is 56.52 I think I'm not 100% sure though
For question 8 the answer is 31.4
Step-by-step explanation: