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zvonat [6]
4 years ago
14

Please urgent answer needed

Mathematics
1 answer:
Daniel [21]4 years ago
5 0

Answer:

8

Step-by-step explanation:

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Does anybody know the answer to this question on Mathswatch?<br><br> :)
professor190 [17]
5 is the correct answer
6 0
3 years ago
A model rocket launched directly upward at a speed of 16 meters per second from a helght of 2 meters . The f(t) = - 4.9t ^ 2 + 1
Anton [14]

Answer:

f(t) = 15.06 m

Step-by-step explanation:

The relationship between the height of the rocket and the time after launch, t. In seconds is given by :

f(t) = - 4.9t ^ 2 + 16t + 2

We need to find the maximum height the rocket will reach the ground.

When it reaches the ground,

f(t) = 0

So,

Maximum height,

f'(t) = 0

-9.8t+16=0\\\\t=\dfrac{16}{9.8}\\\\t=1.63\ s

Put t = 1.63 in equation (1).

f(1.63) = - 4.9\times (1.63 ^ 2) + 16(1.63) + 2\\\\=15.06\ m

So, the maximum height of the rocket is 15.06 m.

4 0
3 years ago
The length of a rectangle is 8 more than the width the area.is 84 square centimeters find the length and width of the rectangle
Aleksandr [31]
The length is 14 and the width is 6. 14 times 6 is 84, which is the area and 14 minus 6 is 8, which makes the length 8 more than the width.
7 0
3 years ago
A car is traveling at 70 mi/hr what’s the cars speed in feet per second?
butalik [34]
U have a lot of calculators in google btw.

102.666667 feet / second
3 0
4 years ago
In two or more complete sentences, describe how to find the interval(s) where the function is decreasing and how interval notati
lapo4ka [179]

Answer:

The function is increasing when the slope is greater than zero and decreasing when the slope is less than zero.  Slope is (y2-y1)/(x2-x1) or the change in y divided by the change in x.

In this case the function is decreasing when x=[-8,-5) and when x=[4,8)

So in interval notation:  x=[-8,-5)U[4,8)

Step-by-step explanation:

BRAINLIEST PLEASE

3 0
4 years ago
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