Answer:
2 is the slope i think
Step-by-step explanation:
Answer:
Solution given:
A(a,b) lie in 6x-y =1
substituting value of A in equation ,we get
6a-b=1...................(1)
B(b,a) lie in 2x - 5y = 5
substituting value of B in equation ,we get
2b-5a=5
b=5(a+1)/2............(2)
substituting value of b in equation 1 ,we get
6a-5(a+1)/2=1
12a-5a-5=2
7a=2+5
a==1
substituting value of a in equation 1 ,we get
6×1-b=1
6-1=b
b=5
<u>so</u><u> </u><u>points</u><u> </u><u>are</u><u> </u><u>A</u><u>(</u><u>1</u><u>,</u><u>5</u><u>)</u><u> </u><u>and</u><u> </u><u>B</u><u>(</u><u>5</u><u>,</u><u>1</u><u>)</u>
we have
equation of line having two points
y-5=1-x
<u>x+y=6 is a required equation of line AB.</u>
We have the following equation:
h (t) = - 16t ^ 2 + 161t + 128
We substitute the value of h (t) = 170:
170 = -16t ^ 2 + 161t + 128
We rewrite the equation:
-16t ^ 2 + 161t + 128 - 170 = 0
-16t ^ 2 + 161t - 42 = 0
We look for the roots of the equation:
t1 = (161/32) + root (23233) / 32
t2 = (161/32) - root (23233) / 32
Answer:
The object is 170 feet off the ground at the following times:
t1 = (161/32) + root (23233) / 32
t2 = (161/32) - root (23233) / 32
Let the number of minutes be = x.
Cost per minute = 18 cents = 0.18
Amount for last call = $20 - $12.08 = $7.92
Number of minutes = Amount / Cost per minute
= 7.92 / 0.18
= 44
Call lasted 44 minutes.