1) 4
2) 16
3) 16
4) 6
5)12
6) 4
Answer:
The initial speed of the car was 80 ft/s.
Step-by-step explanation:
The deceleration is the rate at which the car speed decreases. In this case the speed of the car goes all the way down to 0 ft/s and in order to do that it travelled 50 ft. So we will call the initial speed at which the car started to brake "v_0" and use Torricelli's equation to find it. The equation is given by:
v^2 = (v_0)^2 + 2*a*S
Where v is the final speed, v_0 is the initial speed, a is the rate of acceleration and S is the space travelled. Using the values that the problem gave to us we have:
0^2 = (v_0)^2 - 2*64*50
0 = (v_0)^2 - 6400
(v_0)^2 = 6400
v_0 = sqrt(6400) = 80 ft/s
Notice that in this case "a" was negative, since the car was decelerating instead of accelerating.
The initial speed of the car was 80 ft/s.
Answer:
y+7=1/3(x-3) in point slope
y=1/3x-8 in slope intercept form
Step-by-step explanation:
First put 3x+y=5 in slope-intercept form (y=mx+b)
y=-3x+5
Give that the slope is -3 the perpendicular slope would be 1/3
now using the points (3.-7)
y+7=1/3(x-3) in point slope
y=1/3x-8 in slope intercept form
Answer:
c) $ 75.37
Step-by-step explanation:
The correct question is:
Martha earned a gross pay of $1,215.60 last week. Using the fact that Social Security tax is 6.2% of gross pay, determine the
amount of Social security tax deducted from Martha's gross pay
a $7.54
b. $65.37
c. $75.37
d. $75.40
<u>ANSWER: </u>
<em>Martha's gross pay </em>= $ 1,215.60
<em>Social Security Tax </em>= 6.2%
<em><u>Calculate Social Security tax:</u></em>
6.2% of 1,215.60
6.2/100 x 1,215.60 = $ 75.37
Therefore, the correct answer is option c: $ 75.37
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