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2 years ago

Each member of a 5-member cross-country team runs a course. Their individual times are as follows:

Mathematics

1 answer:

Anastasy [175]2 years ago

7 0

Step-by-step explanation:

the average is the sum of all data points divided by the number of data points (5).

2 hours 17 minutes

2 hours 48 minutes

1 hour 53 minutes

2 hours 19 minutes

1 hour 38 minutes

------------------------------

8 hours 175 minutes

175 minutes = 2 hours 55 minutes

so, we need to add this to the 8 hours and get

10 hours 55 minutes

this we need to divide by 5 for the average time

(10 hours 55 minutes) / 5 = 2 hours 11 minutes =

= 2×60 + 11 = 120 + 11 = 131 minutes.

so, their score is 131.

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Answer if u love cats & dogs

eimsori [14]

Answer:

(7, 5.25) lies on the graph.

Step-by-step explanation:

We are given the following values

x = 4, 6, 8, 12 and corresponding y values are:

y = 3, 4.5, 6, 9

Let us consider two points (4, 6) and (6, 4.5) and try to find out the equation of line.

Equation of a line passing through two points $(x_1,y_1)$ and $(x_2,y_2)$ is given as:

$y=mx+c$

where m is the slope.

(x,y) are the coordinates from where the line passes.

c is the y intercept.

Here,

$x_{1} = 4\\x_{2} = 6\\y_{1} = 3\\y_{2} = 4.5$

Formula for slope is:

$m = \dfrac{y_{2}-y_{1}}{x_{2}-x_{1}}$

$m = \dfrac{4.5-3}{6-4}\\\Rightarrow m = \dfrac{1.5}{2}\\\Rightarrow m = \dfrac{3}{4}$

Now, the equation of line becomes:

$y=\dfrac{3}{4}x+c$

Putting the point (4,3) in the above equation to find c:

$3=\dfrac{3}{4}\times 4+c\\\Rightarrow 3=3+c\\\Rightarrow c =0$

So, final equation of given function is:

$y=\dfrac{3}{4}x$

$4y=3x$

As per the given options, the point (7, 5.25) satisfies the equation.

So correct answer is $(7, 5.25)$ .

6 0

3 years ago

Write the fraction 14/2 as a mixed number

Alja [10]

14/2 results in 7.
:)

8 0

3 years ago

Read 2 more answers

There are 3 times as many novels as comic books in a bookstore.If there are 2480 books altogether, how many comic books are ther

Allushta [10]

Answer:

620 comic books

2480 / 4 is 620.

620 x 3 is 1860.

1860 + 620 is 2480.

Done!

5 0

3 years ago

The soup was missing and 3/4 of the soup was gone 1/4 was in the pot. you have to feed 6 children. How much soup do you give to

postnew [5]

Answer:

1/24

Step-by-step explanation:

1/4 divided by 6 will equal 1/24 of the soup to each kid

this is reproved when you add 1/24 x 6 and it will give .25 which is 1/4

8 0

2 years ago

Read 2 more answers

Simplify: 7(b-a)-7(b+a)

Natali [406]

Answer:
-14a

Explanation:
We are given 7(b - a) - 7(b + a).

We can distribute the 7’s to get:
7b - 7a - 7b - 7a

Combining like terms, we have:
-14a

5 0

2 years ago

Read 2 more answers