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Vera_Pavlovna [14]
2 years ago
11

Lin runs 5 laps around a track in 4 mins How many mins per lap is that + If Lin runs 21 laps at the same rate how long will it t

ake
Mathematics
2 answers:
klemol [59]2 years ago
8 0

Answer:

1. 48 seconds or 0.8 minutes per lap.

2. 1,008 seconds or 16.8 minutes to run 21 laps.

Step-by-step explanation:

1. Turn 4 minutes into seconds which is 240 then divide it by 5 and you'll get 48 seconds per lap. 48/60 to turn it into minutes = 0.8 minutes

2. use 48 seconds and times it by 21 which gets you 1,008 seconds, then divide that by 60 which gets you 16.8 minutes to run 21 laps.

telo118 [61]2 years ago
6 0
The answer would be 64 minutes
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alexandr1967 [171]

Answer:

Step-by-step explanation:

3

4 0
3 years ago
Please help ill give brainlist
nordsb [41]

Answer:

c. m∠2 = m∠5

Step-by-step explanation:

We can check 1 by 1 and find the false one.

For answer A, measures 2 and 4 are vertical angles, which means they are equal, so that's not false.

For answer b, measures 4 and 8 are corresponding angles, since X and Y are parallel, so that's also not false.

For answer c, measures 2 and 5 are supplementary to each other, and since the transversal is not perpendicular to X nor Y, they are not equal, therefore, this is false, making that the answer.

For answer d, measure 2 and 6 are corresponding angles, so that's also not false.

Therefore, the answer must be c.

7 0
3 years ago
What is an equation of the line that passes through the point (5,1)(5,1) and is parallel to the line x+y=9x+y=9?
disa [49]

Answer:

Step-by-step explanation:

Use the point-slope formula.

y - y_1 = m(x - x_1)    you have :  x_1 =5  and  y_1 =1

m the slope  m= -1 (same slope for the line : x+y=9 because this lines are parallel and you can write y=-x+9

an equation for this line is : y-1 = -(x-5)

4 0
2 years ago
Simplify: -3 1/2-(-12 1/4) mi
nasty-shy [4]

Answer: 35/4 miles..... (Hopefully I read correctly)

Step-by-step explanation:

(-7/2)-(-49/4)

(-7/2)+49/4

-14/4+49/4

35/4

Hope this helps!

6 0
3 years ago
The annual precipitation amounts in a certain mountain range are normally distributed with a mean of 85 inches, and a standard d
RSB [31]

Answer:

Probability of choosing number = 0.9192

Step-by-step explanation:

Given:

New mean = 87.8

Mean = 85

Standard deviation = 14

Number picked = 49

Find:

Probability of choosing number

Computation:

Probability of choosing number = [New mean - Mean] / [Standard deviation / √Number picked]

Probability of choosing number <= [(87.8-85)]/[(14/7)]

Probability of choosing number = 0.9192

3 0
2 years ago
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