Answer:
The instantaneous velocity after eight seconds is 9 m/s
Step-by-step explanation:
Given as :
The ball shot upward with velocity of 15 m/s
The height of the ball after t sec is given as h(t) =
Now, The instantaneous velocity after 8 sec = 
Or, The instantaneous velocity =
or, The instantaneous velocity = 
Now at t = 8 sec
The instantaneous velocity = 5 + 4 = 9 m/s
Hence The instantaneous velocity of ball at t = 8 sec , is 9 m/s Answer
Answer:
108
Step-by-step explanation:
five times a number x decreased by 2 can be expressed as by 5x- 2
Answer: 5 divided by 13
Step-by-step explanation:
Answer:

Step-by-step explanation:
-In a right triangle, the Sine of the base acute angle is usually given as:

-In ΔVWX,, VX is the opposite and WV the hypotenuse.
-Therefore, sine of ∠Wis calculated as;

Hence, sine of ∠W is given represented by the ratio 
Answer:
x=-3
Step-by-step explanation:
we know that
The slope of a vertical line is undefined
The formula to calculate the slope between two points is equal to

we have
A(x+14, 5) and B(2−3x, 8)
substitute



so
If the slope is undefined
then
The denominator must be equal to zero

solve for x
