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patriot [66]
4 years ago
15

Using equivalent ratios to find a whole \/

Mathematics
1 answer:
Shkiper50 [21]4 years ago
5 0

Answer:

C.

Step-by-step explanation:

So there are 20 kids with brown hair and this represents 80% of the class total.

So this means 20=.8n since we don't know the total number of kids.

20=.8n

Divide both sides by .8

25=n

So 25 is the total number of kids.

C. is the answer

You could also setup this equation given that 80% is 80/100:

[tex]\frac{20}{\text{ total }}=\frac{80}{100}

To figure out what that total is there you can divide top and bottom of the fraction on right hand side by 4 which gives you the 20 on top and the 25 on bottom.

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A baseball player’s batting average is calculated by dividing the number of times a player got a hit by the total number of time
natita [175]

Answer: B > 40

Step-by-step explanation:

The batting average is usually represented not as a percentage (i.e. 32.0%), but instead as a decimal number with three places after the decimal. A batting average of 1.000 means that the player gets a hit every time he comes to bat, and an average of .000 means the player has no hits.

If after the first 10 games of the season, Samuel had 12 hits off of 33 at bats.

The battling average = 12/33

= 0. 3636

If in a row without a hit and the batting average dropping below 0.300, then the likely bats will be

12/B > 0.300

B > 12/0.300

B > 40 bats

Where B represents the number of bats.

4 0
3 years ago
A segway travels 12.5 miles every 1/2 hour. What is the unit rate of miles per hour?
Damm [24]

Answer:

25 MPH

Step-by-step explanation:

12.5 miles every 1/2 hour X 2 = 25 miles every 1 hour

3 0
3 years ago
Use the three steps to solve the problem. Two planes leave an airport at noon. If the eastbound plane flies at 560 mph and the w
Alenkinab [10]

The distance formula is:  Distance = Rate x Time.


We know the distance: 2000 miles.

We know the rates: 560 and 500 mph.

We need to solve for time:


2000 = (560 + 500) * T

2000 = 1060 *T

T = 2000 / 1060

T = 1.89 hours ( 1 hour 53 minutes)


They left at noon:

12:00 pm + 1 hour and 53 minutes = 1:53 pm.


7 0
4 years ago
Read 2 more answers
If 3y + 6w = 12x then what is w in terms of of x and y
nlexa [21]
Answer is in the photo w step by step

8 0
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Solnce55 [7]
The slope is 3/4 .

Hope this helps!!
~Kiwi
4 0
3 years ago
Read 2 more answers
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