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3 years ago

Please help :)

Mathematics

1 answer:

LenaWriter [7]3 years ago

6 0

Hope this helps :) the sign might be a little wacky but you get it right?

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Help! the file is attached

Natalija [7]

Answer:

924/5 ft/s
369.6 ft

Step-by-step explanation:

126 mi/h = (126 mi)/(1 h)·(5280 ft)/(1 mi)·(1 h)/(3600 s) = (126·5280/3600) ft/s

126 mi/h = 184.8 ft/s = 924/5 ft/s

In 2 seconds, the parachutist falls ...

(184.8 ft/s)·(2 s) = 369.6 ft

4 0

2 years ago

Pleasehelp, im inda stuck

padilas [110]

Answer:

I think the answer is C, sorry if I'm wrong

4 0

2 years ago

Read 2 more answers

What is the area of the sector with a central angle of 97 degrees and a diameter of 10cm

vampirchik [111]

Answer:

21. 162 (rounded to nearest thousandth)

Step-by-step explanation:

Area of a sector: (degree/360) (pi*radius^2)

degree given= 97

radius= diameter/2 = 5

(97/360) (pi*5^2)

(97/360) (pi*25) = 21.16211718

4 0

2 years ago

M is the incenter of triangle ABC. Find the lengths of MD and DC. (Look at pic)

Deffense [45]

Answer:

Part 1) $MD=9\ units$

Part 2) $DC=12\ units$

Step-by-step explanation:

Step 1

Find the length of MD

we know that

The incenter is the intersection of the angle bisectors of the three vertices of the triangle. Is the point forming the origin of a circle inscribed inside the triangle

In this problem

$MD=ME=MF$ ------> is the radius of a circle inscribed inside the triangle

we have that

$MF=9\ units$

therefore

$ME=9\ units$

$MD=9\ units$

Step 2

Find the length of DC

we know that

In the right triangle MDC

Applying the Pythagoras theorem

$MC^{2} =MD^{2}+DC^{2}$

we have

$MD=9\ units$

$MC=15\ units$

substitute

$15^{2} =9^{2}+DC^{2}$

$DC^{2}=225-81$

$DC=\sqrt{144}\ units$

$DC=12\ units$

6 0

3 years ago

An arborist examined trees in an orchard to see if they were infected with a virus. Out of 90 trees, 40% had the virus. How many

Harman [31]

Answer:

36 trees were infected with the virus.

Step-by-step explanation:

Given:

Total number of trees = 90

Percentage of tree that had virus 40%

To find:

Number of tress that were infected by virus = ?

Solution:

Let the number trees that was affected by the virus be X.

then

X = 40% of 90

X = $\frac{40}{100} \times 90$

X = $0.4 \times 90$

X= 36

6 0

2 years ago