Answer: I think it would be Y+(9-j)
Answer:
<h2>a) Average velocity = 278 units</h2><h2>b)
Instantaneous velocity at t = 7 seconds is 148 units</h2>
Step-by-step explanation:
a) Average velocity is the ratio of displacement to time.
We have
s(t) = t³ + t
t is in between 7 and 12
s(7) = 7³ + 7 = 350
s(12) = 12³ + 12 = 1740
Displacement = 1740 - 350 = 1390
Time = 12 - 7 = 5
Displacement = Average velocity x time
1390 = Average velocity x 5
Average velocity = 278 units
b) s(t) = t³ + t
Differentiating
v(t) = 3t² + 1
At t = 7
v(t) = 3 x 7² + 1 = 148 units
Instantaneous velocity at t = 7 seconds is 148 units
Answer:
Step-by-step explanation:
just multiply 75% by 20.00
You are given
two points, (-1, 10) and (5, 8). You are required to find the equation in slope
intercept form given the points. The equation of a slope intercept form is y =
mx + b. Where m is the slope and b is the y-intercept. By definition, slope, m,
is the rise over run or the difference of y over the difference of x.
m =
y2-y1/x2-x1
Let us denote
y2=8, y1=10, x2=5 and x1=-1 and we get
m =
8-10/5-(-1)
<span><u>m = -1/3</u>,
a negative slope means it is rising to the left of the graph.</span>
Since the
slope passes the two points, it also passes the y-intercept. Choose one of the
points, (-1, 10) and substitute it to y = mx + b.
y = mx + b
10 =
(-1/3)(-1) + b
<u>b = 29/3</u>
<u>The
equation now is y = -1/3x + 29/3.</u>
Answer:
1. x = 2
2. x = -2
3 x = 1
Step-by-step explanation:
Make x the subjects and work from there
