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Jobisdone [24]
4 years ago
7

What speed is the fastest, 18 feet in 20 minutes, 90 feet in 2.5 hours, 20 feet in 1.5 hours, or 3 2/3 feet in 1.5 hours.

Mathematics
1 answer:
svlad2 [7]4 years ago
4 0

Answer:

18 feet in 20 minutes.

Step-by-step explanation:


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Is 95.045 greater than 19.545
nadezda [96]
No because in 19.545, the 9 is bigger than the 5 in 95.045 (the first 5)
3 0
4 years ago
Explain how you would find 45 x 7/9 mentally.
Novosadov [1.4K]
You would do 45 divided by 9 which is 5. Then you do 5x7= 35 and that's your answer
3 0
3 years ago
When an object is thrown upwards with a speed of 64 ft/sec, its height above the ground is given by the function h(t)=−16t2+64t
Svet_ta [14]

Answer:

The object will reach its highest point 0.5 seconds after it has been thrown.

Step-by-step explanation:

The object reaches its maximum height when velocity is equal to zero, the velocity is the derivative of function height. That is:

v(t) = \frac{d}{dt}h(t) (1)

Where v(t) is the velocity of the object at time t, in feet per seconds.

If we know that h(t) =-16\cdot t^{2}+64\cdot t and v(t) = 0\,\frac{ft}{s}, then the time when object reaches its highest point is:

v(t) = -32\cdot t+64

-32\cdot t + 64 = 0

t = 0.5\,s

The object will reach its highest point 0.5 seconds after it has been thrown.

3 0
3 years ago
PLEASE HELP ASAP!? Which equations in point-slope form are equations of the line that pass through the points (4, 5) and (−3, −1
faust18 [17]
I am not sure about point slope, but I can find an equation in slope-intercept form and convert it, so
y=mx+b, m=slope
slope=(y1-y2)/(x1-x2)
we have points
(4,5)
(-3,-1)
(x,y)
x1=4
y1=5
x2=-3
y2=-1
subsitute
(5-(-1))/(4-(-3))=(5+1)/(4+3)=6/7
y=6/7+b
sybsitute and solve for b
(4,5)
x=4
y=5
5=6/7(4)+b
5=24/7+b
5=35/7
subtract 24/7 from both sides
11/7=b
y=6/7x+11/7
convert to the point slope form and find equivilent fraction
since the question asks for 2 answers that are correct and only 2 of the equations have slope of 6/7 I can guess that the answers are B and C
7 0
3 years ago
Read 2 more answers
Area of a semicircle is 308cm. Find the perimeter
fgiga [73]

Answer:

72 cm

Step-by-step explanation:

Find the radius using the given information

308=1/2(πr^2)

r^2=616/π

r=14

The perimeter is πr + 2r so plug in 14

π(14) + 2(14)

43.96+28=71.96

3 0
3 years ago
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