Answer:
X =10
Step-by-step explanation:
If you have a scientific calculator that can help you a lot.
I will upload a picture you can follow to solve this problem.
Answer: Running speed is 10k/h
Biking speed is 50k/h
Step-by-step explanation:
My procedure may be unconventional, but it works:
Compute the time it takes, then translate to speed. 25k at biking speed takes 2 hours less than at running speed which is 1/5 bike speed.
Distance/speed = time 25/x=25/(5x-2) cross multiply divisors
25(5x-2) = 25x ==> 125x -50 =25x ==> 100x = 50
x = 0.5 hours at biking speed 25k/0.5h = 50k/h
Running speed = 50/5 10k/h
Proof: 25k/ 10k/h = 2.5 hours
25k /50k/h = 0.5 hours
2.5 h - .5 h = 2 hours, the difference stated in the question.
the songs are approximately 1 dollar each
80 songs times 1 dollar = 80 dollars
Answer:
c. $750
Step-by-step explanation:
the perimeter is 80m
80÷8=10
10*75=750
Answer:
x=6
Step-by-step explanation:
3х +5= 23
Subtract 5 from each side
3х +5-5= 23-5
3x = 18
Divide each side by 3
3x/3 =18/3
x = 6
