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gladu [14]
3 years ago
12

How many committes of 3 people can be formed from 7 people order does not matter?

Mathematics
1 answer:
Phoenix [80]3 years ago
5 0
You can form 2 and then you have the odd one out.
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Lucy took a taxi from her house to the airport. The taxi company charged a pick-up fee of $3.80 plus $3 per mile. The total fare
prisoha [69]
If you do 39.80/ 3 it would give you 13.2667miles and since the tip was not added that’s when you don’t do anything with that number and 3 because every mile you pay 3$
4 0
3 years ago
Read 2 more answers
PLEASE HELP WILL GIVE BRAINLIEST ANSWER
Aneli [31]
The answer is D, which is 32. Hope this helps.
6 0
3 years ago
A paint company mixes it's paint with water to create more paint per gallon. They currently have ten gallon jugs which contain 1
Karo-lina-s [1.5K]
<h3>Answer:  1.25 gallons</h3>

==================================

Explanation:

They currently have ten gallon jugs that contain 10% water, so this means 0.10*10 = 1 gallon of the jug is water and the other 10-1 = 9 gallons is paint. This is assuming the cans are just paint and water.

The ratio of paint to water is 90:10 which reduces to 9:1

Often it helps to reduce as much as possible, but it's actually more handy in this case to keep it at 90:10 so you can see the two parts add back up to 100%

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

Let x be the amount of water we add. This amount is in gallons.

We start off with 1 gallon of water and it bumps up to 1+x gallons of water.

The overall amount of 10 gallons also bumps up to 10+x gallons.

We want a ratio of 80:20 this time, so we want 20 parts water and 80 parts paint. In other words, we want 20/(20+80) = 20/100 = 20% water

Divide (1+x) over (10+x) to get (1+x)/(10+x). This represents the fraction of water. We want this fraction to be equal to 0.20, which is the 20% water amount. It is also equal to 20/100.

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

(1+x)/(10+x) = 20/100

100(1+x) = 20(10+x) ... cross multiply

100+100x = 200+20x ... distribute

100x-20x = 200-100

80x = 100

x = 100/80 ... divide both sides by 80

x = 1.25

You need to add 1.25 gallons of water

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

If you add 1.25 gallons of water, then,

amount of water = 1+x = 1+1.25 = 2.25

amount of paint&water = 10+x = 10+1.25 = 11.25

So you'll have 2.25 gallons of water out of 11.25 gallons of water&paint mix

2.25/11.25 = 0.2 = 20% water

This confirms our answer.

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

Extra info:

1.25 gallons = 1 gallon + 1/4 gallon

1.25 gallons = 1 gallon + 1 quart

This is because 1 gallon = 4 quarts, so 1 quart = 1/4 gallon.

5 0
3 years ago
How much of a radioactive kind of silver will be left after 50 seconds in the half-life is 25 seconds and you start with 204gram
gizmo_the_mogwai [7]

Answer:

51 grams.

Step-by-step explanation:

After 25 seconds  204 * 1/2 = 102 grams is left.

So after 50 seconds ( 2 * 25), 102 * 1/2 = 51 g are left.

7 0
2 years ago
9a-4(2a+5).<br> I really need help with this question
slava [35]

First you had to expanded form.

-4(2a+5)=-8a-20

9a-8a-20

Finally you can also add by similar to elements.

9a-8a=a

a-20

Final answer: \boxed{=a-20}

Hope this helps!

And thank you for posting your question at here on brainly, and have a great day.

-Charlie

8 0
3 years ago
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