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3 years ago

PLEASE HELP! I need someone to help me with my home work is anyone able to help?

Mathematics

1 answer:

Monica [59]3 years ago

8 0

Answer:

Katie

Step-by-step explanation:

Use seconds as the standard unit to compare the speeds of the 4 runners

Tony is already in standard form and runs 12 ft/s

Katie:

450/30

15 ft/s

Frank:

1 mile = 5280 feet

5280/577

9.15 ft/s

Adam:

I minute = 60 seconds

880/60

14.67 ft/s

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Find the difference between 760 and 188

topjm [15]

Answer:

572

Step-by-step explanation:

Work :

7 0

3 years ago

A bag contains 9 tiles, each with a different number from 1 to 9. You choose a tile without looking, put it aside, choose a seco

Ksenya-84 [330]

Using the combination formula, it is found that there are 84 ways to choose the three tiles.

The order in which the tiles are chosen is not important, hence the <em>combination formula</em> is used to solve this question.

<h3>What is the combination formula?</h3>

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by:

$C_{n,x} = \frac{n!}{x!(n-x)!}$

In this problem, three tiles are chosen from a set of nine, hence:

$C_{9,3} = \frac{9!}{3!6!} = 84$

There are 84 ways to choose the three tiles.

More can be learned about the combination formula at brainly.com/question/25821700

8 0

2 years ago

The ratio of the radiii of two wheels is 3:7 what is the ratio of their circumferences

____ [38]

Answer:

3 : 7

Step-by-step explanation:

Let the radii be 3x, 7x.

Circumference = 2πr, where r = radius

Thus, ratio of circumference:

2 × π × 3x : 2 × π × 7x

= 3 : 7

( as 2, π and x get cancelled out)

8 0

3 years ago

Helppppppppppppppppppppp

Nastasia [14]

Answer:

Step-by-step explanation:

1) 5 - [-5] = 5 + 5 = 10

2)8 - 13 = 8 + (-13) = -5

3) 12 +(-3) = 9

4) x + (-7) = 5

x - 7 = 5

x = 5 + 7

x = 12

We need to add 12 to (-7) to get 5

5) 7 - x = -5

7 = -5 +x

7 + 5 = x

12 = x

We need to take away 12 to 7 to get (-5)

6) 7 - (-10) = 7 + 10 = 17

17° C

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2 years ago

Plz help me I need tu turn this is by midnight!!

expeople1 [14]

Answer:

The last answer.

Step-by-step explanation:

It looks to be the correct answer because for the one above you can't simplify 27 by 5.

4 0

3 years ago

Read 2 more answers