Phil is riding his bike. he rides 50 miles in 4 hours, 62.5 miles in 5 hours, and 75 miles in 6 hours. find the constant of prop
ortionality and write an equation to describe the situation. let x represent the number of hours.
2 answers:
12.5(x)
x = hours
12.5 = per hour
50:4=12.5 per hour.
How we can be sure for 5 hours.
5×12.5=62.5 the anwser is correct.
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84. Area of a triangle is (base x height) / 2
First number is a and second one is 2a+4
a(2a+4)=48
a(a+2)=24
a^2+2a-24=0
(a+6)(a-4)=0
the question says a is negative so a=-6 b=-8
Answer:
x=3,y=1
Step-by-step explanation:
2^x+y=16,3^x-y=9
16=2^4,9=3^2
x+y=4,x-y=2 add both
2x=6,x=3
3-y=2,y=1
