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Dahasolnce [82]
2 years ago
5

An Olympic swimmer can swim 50 meters in 21 seconds. How long would it take the swimmer to swim 800 meters if he kept up the sam

e pace?
Mathematics
1 answer:
ICE Princess25 [194]2 years ago
7 0

Answer:

It would take 336 seconds

Step-by-step explanation:

Set up as a proportion:

50 meters/21 seconds = 800 meters/x

Then we cross multiply to find the answer:

336 = x

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-what is the answer <br><br> 14u7uo(1+0.05)
mariarad [96]

Answer:

draw 4

Step-by-step explanation:

uno draw 4 color red I WIN!

JK IT'S 14.7u^8o

8 0
3 years ago
3w+4w-2=12 solve equation
Scilla [17]

Answer:

W= 2

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

7 0
3 years ago
I need help ASAP!!Explain the answer
nordsb [41]

Answer:

volume=pi times r^2 height÷3.

r is the radius, or in this case 4yd. height is 10yd. pi is 3.14

Here are the steps:

3.14r^2 height÷3

3.14×4^2 10÷3

=167.55

final answer rounded to the nearest tenth: 167.6

I apologize for getting the math wrong the first time. My formula was correct, but I needed to double check my calculations. I'm certain this is the right answer.

5 0
3 years ago
4,567.89
In-s [12.5K]

Answer:

I got 40210.1

Step-by-step explanation:

4,567.89+7,894.56=12462.45

12462.45+1,232.45=13694.9

13694.9+1,474.10=15169

15169+2,585.20=17754.2

17754.2+3696.36=21450.56

21450.56+3,214.56=24665.12

24665.12+6,545.65=31210.77

31210.77+7,898.78=39109.55

39109.55+1.100.55=40210.1

5 0
3 years ago
A school bought pens, each costing $1, and pencils, each costing $0.5. The cost of the whole purchase was $220. How many pens an
Aleks [24]

Answer:

<u>The number of pens = 120 and the number of pencils = 200</u>

Step-by-step explanation:

Let the number of pens x, and the number of pencils is y

the cost of one pen $1, and the cost of one pencil $0.5

The cost of the whole purchase was $220

1 * x + 0.5 * y = 220

x + 0.5 y = 220 ⇒ eq.(1)

there were 80 more pencils than pens

y - x = 80 ⇒ eq.(2)

from eq.(2) x = y - 80

By substitution with x from the last equation at eq.(1)

∴ (y - 80) + 0.5 y = 220

1.5y = 220 + 80 = 300

y = 300/1.5 = 200

x = y - 80 = 200 - 80 = 120

<u>So, the number of pens = 120 and the number of pencils = 200</u>

7 0
3 years ago
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