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SashulF [63]
3 years ago
13

If 80% of a number is 20, what is 20% of the number?

Mathematics
1 answer:
Vlad1618 [11]3 years ago
5 0

Answer: 5

Step-by-step explanation:

20/4=5 which is 20%

5*5=25 which is the number

20% of the number is

100/20=5

25/5=5

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Tom buys some shirts for $15 each.He has a coupon for $9 off the total price. If he pays $36, how many shirts,s,did he buy? writ
joja [24]
15x-9=36 is the equation and he bought 3 shirts
4 0
3 years ago
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What will be the location of U’ in the image trapezoid S’T’U’V’?
oksano4ka [1.4K]

Answer:

(14,1)

Step-by-step explanation:

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4 0
3 years ago
During summer weekdays, boats arrive at the inlet drawbridge according to Poisson distribution at a rate of 3 per hour. In a 2-h
mrs_skeptik [129]

Answer:

The probability that no boats arrive is 2.48\times 10^{-3}.

Step-by-step explanation:

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Poisson distribution is a statistical distribution that helps to find out the probability of a certain is likely occur a specified period of time.

P(X=x)=\frac{e^{-\lambda t}(\lambda t)^x}{x!}

\lambda = rate.

Given that, Poisson distribution at a rate of 3 per hour.

\lambda = 3

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The probability that no boats arrive is

P(X=0)=\frac{e^{-2\times 3}(2\times 3)^0}{0!}

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6 0
3 years ago
Solve using elimination.<br><br> –9x + 9y = 18<br> –6x + 9y = –12
Arada [10]
You can multiply either the top or bottom equation by -1 so lets say you apply it to the bottom equation it’ll look like this:

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then the +9y and -9y will cancel out

-9x = 18
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then you add the two equations together

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divide both sides by -3

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8 0
3 years ago
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Step-by-step explanation:

1 km=100 dam

29.2 km=29.2 x 100=2920 dam

5 0
3 years ago
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