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GrogVix [38]
3 years ago
13

A parachutist's speed during a free fall reaches

Mathematics
2 answers:
Ray Of Light [21]3 years ago
8 0
"Dimensional analysis" is the primary way to make conversions between any units.  Some have trouble because they fail to make it an important point to label units, but labeling units correctly makes tracking and making any conversion very simple...The process and thinking is that you want to cancel out units that you don't need in the solutions...

(198ft/s)(12in/ft)(2.54cm/in)(m/100cm)=60.3504m/s  (and that is exact)

d=5s(60.3504m/s)=301.752m

ugh...assume that a meter equals 3.3 feet and do not round your answers???
really?  These people are idiots when there is an exact conversion.  What is the point of not rounding when you are using a horrible approximation?  :D

(198ft/s)(m/3.3ft)=60m/s

d=5s(60m/s)=300m
tatiyna3 years ago
6 0

Answer:

We have been given the conversion rate as:

1 meter is equal to 3.3 feet.

Given condition is :

A parachutist's speed during a free fall reaches  198 feet per second.

So, the speed in meters per second is = \frac{198}{3.3} meter per second

= 60 meter per second.

And at this speed, the parachutist will fall 60\times 5=300

= 300 meters

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zheka24 [161]

The area of the given trapezoid will be the sum of the areas of the triangular part and the rectangular part.

Now, the area of the rectangle, A_1 is:

A_1=length \times width=2\times 1.5=3 squared yards

Likewise, the area, A_2 of the triangle will be:

A_2=\frac{1}{2}\times base\times height=\frac{1}{2}\times 5\times 1.5=3.75 yd^2

Thus, the area of the trapezoid=A_1+A_2=3+3.75=6.75 yd^2

Thus the first option is the correct option.

4 0
3 years ago
If a cat falls out of a tree, it has a probability of 0.92 that it will land
Alex_Xolod [135]

The probability that the cat lands on its feet both times it falls out of a tree is 0.85

<h3>How to determine the probability?</h3>

The probability that the cat lands on its feet is given as:

P(Feet) = 0.92

The probability that it lands on its feet twice is calculated using:

P = P(Feet) * P(Feet)

So, we have:

P = 0.92 * 0.92

Evaluate

P = 0.85

Hence, the probability is 0.85

Read more about probability at

brainly.com/question/251701

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3 0
1 year ago
What is the value of n
Crank

Answer:

The correct answer is option D. 69°

Step-by-step explanation:

Points to remember

1). The sum of angles in a linear pair is 180°

2). In a triangle sum of two angles are equal to the exterior angle of third angle

From the figure we can see a triangle in which two exterior angles area given.

<u>To find the value of n</u>

from figure we get,

n = (interior angle of 131°  + interior angle of 160°)

interior angle of 131° = 180 - 131 = 49°

interior angle of 160° = 180 - 160 = 20°

n =  49° + 20° =  69°

Therefore the  correct answer is option D. 69°

7 0
3 years ago
Read 2 more answers
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pshichka [43]

Answer:

b.

Step-by-step explanation:

8 0
3 years ago
What is the surface area of the cylinder in terms of pi? The diagram is not drawn to scale.
bearhunter [10]
Surface Area = 2πr² + 2πrh 

Surface Area = 2π(7)² + 2π(7)(15) = 308π in²²

Answer: 308π in²
3 0
3 years ago
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