Let the distance be x miles
Time = Distance / speed
Time taken by Mike to go to his friend's house = x / 40 hours
Time taken by him to return = x / 45 hours
Total time = x / 40 + x / 45 = 4 hours
= 9x + 8x = 1440 miles
17x = 1440
= x = 1440 ÷ 7
= x = 84.706
Time taken to return home = 84.706 /45= 1.882 hours .
Therefore , Mike took 1.882 hours to reach home .
Answer:
50 triangles?
Step-by-step explanation:
gftjjbddhhbknhfdsdvnmmbghjbfd
Answer:
7
Step-by-step explanation:
what number is 28% of 25
Is means equals and of means multiply
N = 28% of 25
Change to decimal form
N = .28* 25
N =7
Answer:
Ratio 1= 14:6
Ratio 2=21:9
Ratio 3=28:12
Step-by-step explanation:
7:3
7×2=14
3×2=6
=14:6
7×3=21
3×3=9
=21:9
7×4=28
3×4=12
=28:12
Answer:
f^-1(x) = 1/4 x - 7/4
Step-by-step explanation:
f(x)=4x+7
Inverse:
x = 4y + 7
4y = x - 7
y = 1/4 x - 7/4
Answer
f^-1(x) = 1/4 x - 7/4
