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3 years ago

9

3. A circular running track is 14 mile long. Elena runs on this track, completing each lap in 120of an hour. What is Elena’s run

ning speed? Include the unit of measure. [3 points]

1 answer:

larisa [96]3 years ago

6 0

Answer:

2.22m/s

Step-by-step explanation:

Distance = Velocity/Time

533.33m = V/4minutes

V = 533.33/240 seconds

V = 2.22m/s

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A university offers 3 calculus classes: Math 2A, 2B, and 2C. A set of students have each taken at least one of the three classes

lyudmila [28]

Answer:

157

Step-by-step explanation:

We are given that

Number of students in maths 2A=n(2A)=51

Number of students in math 2B=n(2B)=80

Number of students in math 2C=n(2C)=70

Number of students in maths 2A and 2B= $n(A\cap B)=15$

Number of students in maths 2B and 2C= $n(B\cap C)=13$

Number of students in maths 2A and 2C= $n(A\cap C)=20$

Number of students in maths 2A ,2B and 2C=4

We have to find the number of students in a set.

Formula: $n(A\cup B\cup C)=n(A)+n(B)+n(C)-n(A\cap B)-n(B\cap C)-n(A\cap C)+n(A\cap B\cap C)$

Substitute the values in the given formula

$n(2A\cup 2B\cup 2C)=51+80+70-15-13-20+4=157$

Hence, total number of students in a set=157

4 0

3 years ago

F(x) is a function.<br>A. True <br>B. False

shepuryov [24]

Answer:

True.That should be the answer

4 0

3 years ago

A number is multipled by 5, and then 3 is subtracted from the product. The result is 12

earnstyle [38]

Answer:

3

Step-by-step explanation:

The original number is 3. To solve this you can take your final result (12) and ADD what you subtracted from the product (3) which would then give you the product (15). Next to find your beginning value you can divide by 5.

12+3 = 15

15/5 = 3

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3 years ago

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The equation y + 6 = one-third (X minus 9) is written in point-slope form. What is the equation written in slope-intercept form?

Volgvan

Answer:

r u in geometry 1?

Step-by-step explanation:

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3 years ago

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What is the effect on the graph of the function f(x) = sqrt 10x when f(x) is replaced with f(x − 5)?

Olin [163]

Answer:

The graph experiences a translation of 5 units to the right.

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3 years ago