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RUDIKE [14]
3 years ago
8

The Answer to number 72

Mathematics
1 answer:
Vsevolod [243]3 years ago
5 0
First we want to calculate at what height and at what time rocket stops ascending.
h' = 256 - 32t = 0
32t = 256
t = 8

h = 256*8 - 16*8^2
h = 1024

Now we want to find time at which it gets 200 feet that means our equation is:
200 = 256t - 16*t^2
-16*t^2 + 256t - 200 = 0  

t1 = 0.82s
t2 = 15.17s

time t1 is when rocket is ascending and t2 when it is descending therefore answer is t2
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The answer is 3, -3 so D
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Makayla wants to put new capet in her rectangular shaped room.The length of the room is 9 feet, and the area of the room is 108
EleoNora [17]

Answer: 42 feet

Step-by-step explanation:

The solution is in the attachment

6 0
2 years ago
Read 2 more answers
Graph the following lines and write the equation in slope-intercept form. With y intercept of −3 and an x intercept of −4.5.
makvit [3.9K]

Answer:

y=-\frac{2}{3}x-3

Step-by-step explanation:

To write the equation of a line we need 2 points. We know:

  • If the y-intercept of the line is -3 then the point is (0,-3).
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Using these two point, we will find the slope and then substitute it into the point slope form y-y_1=m(x-x_1) with a point.

Slope: m=\frac{0--3}{-4.5-0}=\frac{0+3}{-4.5}=\frac{3}{-4.5}=-0.6667

This decimal is -2/3. We will now substitute -2/3 and (0,-3) into the point slope form.

y--3=-\frac{2}{3}(x-0)\\y+3=-\frac{2}{3}(x)\\y+3=-\frac{2}{3}x\\y=-\frac{2}{3}x-3


6 0
3 years ago
If the circumference of a circle is 82p , then the value of ‘r’ is
Andrews [41]

Answer:

41cm

Step-by-step explanation:

The circumference of a circle is 82π

Therefore r can be calculated as follows

2 × π × r= 82× π

2πr= 82π

r = 82π/2π

r= 41

Hence r is 41cm

8 0
2 years ago
isabel deposits$6000 into an account that earns1.5% interest compounded monthly. assuming no more deposits and no withdrawals ar
timama [110]
Interest earned in a month
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90

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12*4
48

So the interest earned in 4 years
90*48
4320 dollars
3 0
3 years ago
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