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il63 [147K]
3 years ago
13

Lin runs 5 laps around a track in 6 minutes If Lin runs 21 laps at the same rate, how long does it take her

Mathematics
1 answer:
nydimaria [60]3 years ago
4 0

Answer:

It would take her 25.2 minutes

Step-by-step explanation:

6 divided by 5 gives you the 1.2 minutes

Then I would do 1.2 minutes for each lap  * 21 laps = 25.2 minutes

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Help I don't understand this math. Whoever gets the right answer gets Brainlist! :)​
Jlenok [28]

Answer:

1200 more beats in 3 seconds or

400 more beats in 1 second

Step-by-step explanation:

A Mosquito beats its wings at a rate of 600 times per second.

A honey bee beats its wings at a rate of 200 times per second.

600 - 200 = 400

The mosquito beats 400 more times per second

400 X 3 = 1200

5 0
2 years ago
(25 Points) The measure of b is ______?
Eva8 [605]

Answer:

21

Step-by-step explanation:

Since this is a right triangle, we can use the Pythagorean theorem

a^2 +b^2 = c^2

where a and b are the legs and c is the hypotenuse (opposite the right angle)

20^2 +b^2 = 29^2

400 + b^2 =841

Subtract 400 from each side

400-400 +b^2 = 841-400

b^2 = 441

Take the square root of each side

sqrt(b^2) = sqrt(441)

b = 21

6 0
3 years ago
Read 2 more answers
Can someone help me out with this
babymother [125]
The answer would be x= 68 degrees
7 0
2 years ago
There are 1073 students at Raine High School. 26 percent do not identify as male or female, 42 percent identify as female, and 3
irinina [24]
Don’t Identify- 278.98
Female- 450.66
Male- 343.36

Considering these are people, you probably will need to round either up or down. If you round it would be:

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3 0
2 years ago
100 POINTS plz help Chuck drops a rock from a height of 70 m. How long will it take the rock to hit the ground?
lord [1]

Answer:

3.8

Step-by-step explanation:

We are going to plug in the values of the equation, so h(t)=-4.9^2+v0t+h0 will

now be h(t)=-4.9^2+0+70

Now we will find the a b and c of the equation,  a=-4.9 b=0 c=70

Now we must find the discriminant of the equation,  which the equation for that is D=b^2+(-4)(a)(c)

So D=1,372

Now we use the quadratic formula (see picture below for finished product)

4 0
3 years ago
Read 2 more answers
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