11. Sin^-1 (24/29)
12.cos^-1 (9/20)
13.tan^-1 (17/11)
14. tan^-1 (12/29)
I hope this is helpful :)
Answer:
x=29.3
Step-by-step explanation:
880x+30 hope it help T-T''
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.
What is the actual question here? I'm not sure if I'm just reading over it but it's not clear