Answer: He run 7 high-speed intervals and 8 low-speed intervals.
Step-by-step explanation:
Let x = Number of high-speed intervals.
y= Number of low-speed intervals .
He runs high-speed intervals in 16 seconds, and low-speed intervals in 23 seconds, and he runs a combined total of 15 intervals in 4 minutes and 56 seconds.
4 min 56 sec = (4(60)+56) sec = 296 sec [ 1 minute = 60 seconds]
According to the question , we have the following linear equations :

Multiply (i)by 16 , we get

Subtract (iii) from (ii)

Put value of y in (i) , we get

Hence, he run 7 high-speed intervals and 8 low-speed intervals.
<span>X(5)=45, please rate 5 stars and mark as brainliest and say thanks. Hope this helps</span>
Answer:
10 months
Step-by-step explanation:
2000 - 500 = 1500.
You can pay 100 + 50 = 150 per month
1500 / 150 = 10 months
Answer:
V=6
Step-by-step explanation:
H=6
B=3
V=?
V=6*3/3
V=6
Hello!!
72% = n/25
n = 72% * 25
n = 18
Good luck :)