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sergiy2304 [10]
3 years ago
12

What is the mean of 48 75 80 and 61

Mathematics
1 answer:
Nitella [24]3 years ago
7 0

Answer:6

Step-by-step explanation:

1.add all the numbers up 48+75+80+61=264

2. The amount of the numbers all together by how much numbers there are and there is 4 numbers so do 264/4 which is 66

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Nathan ran 2.35 miles on Tuesday and 3.15 on Thursday. What total distance did he run?
tekilochka [14]

Answer:

5.5 miles

Step-by-step explanation:

2.35 + 3.15 =5.5

3 0
3 years ago
A and B working together can do a work in 6 days. If A takes 5 days less than B to finish the work, in how many days B alone can
svetlana [45]

Answer:

15 days

Step-by-step explanation:

Let x be the number of days needed for B to complete the job. Then x-5 is the number of days needed for A to complete the job.

In 1 day,

  • A completes \dfrac{1}{x-5} of all work;
  • B completes \dfrac{1}{x} of all work.

Hence, in 1 day both A and B complete \dfrac{1}{x-5}+\dfrac{1}{x} of all work. A and B working together can do a work in 6 days. Then

6\cdot \left(\dfrac{1}{x-5}+\dfrac{1}{x}\right)=1.

Solve this equation:

\dfrac{6x+6x-30}{x(x-5)}=1,\\ \\12x-30=x^2-5x,\\ \\x^2-17x+30=0,\\ \\D=(-17)^2-4\cdot 30=289-120=169=13^2,\\ \\x_{1,2}=\dfrac{17\pm 13}{2}=2,\ 15.

If x=2, then x-5=-3 that is impossible. So, B needs 15 days to complete the work alone.

6 0
3 years ago
Find the volume of the cylinder. Round your answer to the nearest tenth.
Nana76 [90]

Answer:

169.6 m³

Step-by-step explanation:

the volume = 3.14 × 3² × 6

= 3.14 × 54 = 169.6 m³

5 0
3 years ago
James has 858 feet of rope. There are 18 teams of hikers.
soldier1979 [14.2K]

Answer:

48 or 47

Step-by-step explanation:

858/18 = 47.6

6 0
3 years ago
Help picture below problem 11
Elden [556K]

Answer:

B) angle B

Step-by-step explanation:

Since the question is telling you that both the triangles are essentially the same, you just have to look to see which letter of triangle ABC is in the same general place as triangle DEF.

In this case angle B is in the same general spot as angle E, so therefore B is your answer.

Hope this helps you :)

6 0
3 years ago
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