Math: What is the y-intercept of the exponential function y= -6(2)^x +3?
2 answers:
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The speed of car is 64 kilometer per hour
<em><u>Solution:</u></em>
Given that car travelled a distance of D = 320 km for T = 5.0 hours
To find: speed (R) of the car in km per hour
<em><u>Formula given:</u></em>
D = R. T
where "D" is the distance
"R" is the speed of car
"T" is the time taken
<em><u>Substituting the given values in above formula we get,</u></em>
Thus the speed of car is 64 kilometer per hour
We cannot round the answer to nearest tenth, since answer is not in decimal
We are given
we know that
so, we get
opposite =7
adjacent=24
now, we can find hypotenuse
now, we can draw triangle and then switch vertices accordingly
we can find cos(B) using second triangle
In second triangle:
adjacent=7
hypotenuse =25
so, we get
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