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miskamm [114]
3 years ago
8

A four person relay team completed a race in 72.4 seconds. On average what was each runner's time?

Mathematics
1 answer:
aleksley [76]3 years ago
4 0
Each runners time would be an average of 18.1
72.4/4=18.1
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mash [69]
The correct answer is that there is more variability in the heights of the volleyball team members.

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Both teams have players that are 76 inches tall, so the last two statements cannot be true.
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3 years ago
Find PQ if possible
cupoosta [38]

Answer:

11 units.

Step-by-step explanation:

8 0
2 years ago
Find a quadratic polynomial whose sum and and product is -7 and -2
vampirchik [111]

Answer:

<h2>x²+7x-2 = 0</h2>

Step-by-step explanation:

The general form of a quadratic equation with roots a and b is expressed as shown;

x²-(sum of root) x + (product of roots) = 0

x² - (a+b)x + ab = 0 ... 1

Given the sum of roots a+b = -7

Product of roots ab = -2

Substituting this values in equation 1 above wil give;

x²-(-7)x+(-2) = 0

x²+7x-2 = 0

The resulting quadratic polynomial is x²+7x-2 = 0

3 0
3 years ago
Write a function describing the relationship of the given variables.
zhuklara [117]

Answer:

The function is A = 10√r

Step-by-step explanation:

* Lets explain the meaning of direct variation

- The direct variation is a mathematical relationship between two

  variables that can be expressed by an equation in which one

  variable is equal to a constant times the other

- If Y is in direct variation with x (y ∝ x), then y = kx, where k is the

 constant of variation

* Now lets solve the problem

# A is varies directly with the square root of r

- Change the statement above to a mathematical relation

∴ A ∝ √r

- Chang the relation to a function by using a constant k

∴ A = k√r

- To find the value of the constant of variation k substitute A and r

 by the given values

∵ r = 16 when A = 40

∵ A = k√r

∴ 40 = k√16 ⇒ simplify the square root

∴ 40 = 4k ⇒ divide both sides by 4 to find the value of k

∴ 10 = k

- The value of the constant of variation is 10

∴ The function describing the relationship of A and r is A = 10√r

8 0
3 years ago
Read 2 more answers
A decorative steel is shown and it is made from circular circle and 6 stems.
STALIN [3.7K]

The total length of the steel used in the frame is 270 cm, if the decorative steel up of 6 stems and each stem is 45 cm.

Step-by-step explanation:

The given is,

           Decorative steel made from circular circle of 6 stems

           The length of the stem is 45 cm

Step:1

         We need to find the total length of the steel used in the decorative steel,

          Let,  T - Total length of the steel

                  L - Length of the stem

                  n - Number of stems used in steel frame

Step:2

       Formula to find the total length of the steel is,

                            T= l × n

       From given,

                  l = 45 cm

                 n = 6 stems

       Substitute the values in formula,

                          T = ( 45 × 6 )

                              = 270

                        T = 270 cm

Result:

         The total length of the steel used in the frame is 270 cm.

5 0
3 years ago
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