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djverab [1.8K]
3 years ago
10

During track practice, Chris ran 2.5 laps in 81 seconds. Find his average time per lap.

Mathematics
1 answer:
DerKrebs [107]3 years ago
4 0
Chris ran a lap at 32.4 seconds on average. 
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To determine what percentage of 376 teachers at a university were female, Ryan randomly selected 14 teachers. He then collected
Kipish [7]

Answer:

a)There are 14 teachers in Ryan's sample, and 362 teachers in the population.

Step-by-step explanation:

<u> Population:-</u>

<em>The totality of observations with which we are concerned, whether this number be finite or infinite  is called population.</em>

<em>Given data population is  376 teachers at a university were female'</em>

<u><em>Sample:-</em></u>

A sample is a subset of a Population

sample of given data = 14teachers

The percentage of 376 teachers at a university were female, Ryan randomly selected 14 teachers.

<em />p = \frac{14}{376} = 0.0372<em> = 3.72%</em>

6 0
4 years ago
What is the value for the missing angle ??
allsm [11]
Answer: 9 inches.
Do the pythagorean theorem to find your answer.
Formula: a^2 + b^2 = c2
12 = b
15 = c
a^2 + 12^2 = 15^2
Simplify the equation
a^2 + 144 = 225
Subtract 144 on both sides.
a^2 = 81
Square root of 81 is 9.
8 0
3 years ago
What is the answer for this math problem 4-4×7+3=
Varvara68 [4.7K]
4-4*7+3=4-28+3=-24+3=-21
8 0
4 years ago
Three baseball players are playing catch. Jessica is directly south of Aaron and directly west of Mike. Jessica and Mike are 8 m
dimaraw [331]

Answer:

6 m

Step-by-step explanation:

The diagrammatic illustration of the problem. Is attached

The diaabcw between Aaron and Jessica can be obtained using Pythagoras :

d = √(10² - 8²)

d = √100 - 64

d = √36

d = 6

6 0
3 years ago
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Elenna [48]
The general equation is y-k=a(x-h)² where (h,k) is the vertex.

So in this case we have y+12=a(x+6)².

Plug in x=0, y=-24: -12=36a, and a=-⅓. Therefore y+12=-⅓(x+6)².
4 0
3 years ago
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