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eduard
3 years ago
10

Charlie runs laps around a track. the table shows how long it takes him to run different numbers of laps. how long will it take

Charlie to run five laps?

Mathematics
2 answers:
guapka [62]3 years ago
4 0
It would take him 20 minutes. Since the bottom of the chart goes up by 8 each time while the top goes up by two, only adding half of 8 (4) on the bottom would make the most sense. Since those numbers go up by two. Going up or down one would make you have to add or subtract 4 to get to in between numbers.
WARRIOR [948]3 years ago
3 0

Answer:

20 (minutes)

Step-by-step explanation:

Look at the first columns, and it tells us that Charlie runs 2 laps in 8 minutes. Then simply divide by two, then you'll get that Charlie runs 1 lap in 4 minutes. So for five laps, multiply 4 by 5, which is 20.

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I need help What do you call the pair of angles in this diagram
Varvara68 [4.7K]

Answer: According to the pair of angles in the diagram, its B) Adjacent.

Step-by-step explanation:

-Adjacent angles are two angles that don't overlap each other and have a common side and a common vertex.

3 0
3 years ago
Working together, it takes Sam, Jenna, and Francisco two hours to paint one room. When Sam works alone, he can paint one room in
lutik1710 [3]

Answer:  12 hours

Step-by-step explanation:

Given : Working together, it takes Sam, Jenna, and Francisco two hours to paint one room.

When Sam works alone, he can paint one room in 6 hours. When Jenna works alone, she can paint one room in 4 hours.

Let 't' be the time taken by Francisco to paint one room on his own.

Then , we have

Rate of work of  Sam +Rate of work of Jenna + Rate of work of  Francisco =Rate of work they all do together

\dfrac{1}{6}+\dfrac{1}{4}+\dfrac{1}{t}=\dfrac{1}{2}

i.e.  \dfrac{1}{t}=\dfrac{1}{2}-(\dfrac{1}{6}+\dfrac{1}{4})

i.e.  \dfrac{1}{t}=\dfrac{1}{2}-(\dfrac{4+6}{24})

i.e.  \dfrac{1}{t}=\dfrac{1}{2}-\dfrac{10}{24}

i.e.  \dfrac{1}{t}=\dfrac{1}{2}-\dfrac{5}{12}

i.e.  \dfrac{1}{t}=\dfrac{6-5}{12}

i.e.  \dfrac{1}{t}=\dfrac{1}{12}

i.e. t= 12

Hence,  Francisco would take 12 hours to  paint one room on his own.

8 0
3 years ago
Suppose we describe the weather as either hot ​(Upper H​) or cloudy ​(Upper C​). Answer parts​ (a) and​ (b) below.
Ket [755]

Answer:

{HH,CC,HC,CH}

Step-by-step explanation:

We are given that

H denotes hot and cloudy denotes C.

We have to find the  total possible outcomes for the weather on two consecutive days.

The possible cases in two consecutive days

Both days are hot=HH

Both days are cloud=CC

First day is hot  other day cloudy=HC

First day is cloudy other day is hot=CH

Total possible cases=HH,CC,HC,CH

Therefor, the total outcomes for the weather on two consecutive days={HH,CC,HC,CH}

4 0
3 years ago
In a random sample of 75 individuals, it was found that 52 of them prefer coffee to tea. What is the margin of error for the tru
Ugo [173]
0.106 is the answer

letters till 20 characters
4 0
3 years ago
In the 9th and 10th grades at Jefferson High School, there are 236 students. Of thoes students, 121 are in 9th grade, Of the 214
Lorico [155]

Total -

Right-handed: 214! Left-handed: 22!

Total of students: 236 students


I hope this helped! :D


Step-by-step explanation:

9th Grade: Right Handed: 111! Left Handed: 10!

10 Grade: Right Handed: 103! Left Handed: 22!

Add left handed for both grades. Add right handed for both grades. And add total numbers.

I hope this helped :D    


5 0
3 years ago
Read 2 more answers
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