1.95. first i did 8 divided by 60 because 8 km an hour and an hour = 60 minutes so then i got .13 with 3 repeating so i just put 13 then i did 13 times 15 because there were 15 minutes. Hope that helps!
y=x²-10x-7
a>0 so we will be looking for minimum
x=-b/2a=10/2=5
y=25-50-7=-32
Answer: (5;32)
y=-4x²-8x+1
а<0 so we will be looking for maximum
х=-b/2a=8/-8=-1
у=4+8+1=13
Maximum point (-1;13)
Answer: 286 Calories
Step-by-step explanation: Hope this helps ;)
Answer:
Hope it'll help.
Step-by-step explanation:
Please look at the picture and get your answer.
The solution is, x=8, y=-7