3 years ago

20% of a number is 12. what is the whole number?

Mathematics

2 answers:

Lana71 [14]3 years ago

6 0

60 would be the answer since 12•5=60 and 20•5=100

kolbaska11 [484]3 years ago

5 0

Answer:

60 that is the answer

Step-by-step explanation:

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In a random sample of 16 residents of the state of Washington, the mean waste recycled per person per day was 2.8 pounds with a

kakasveta [241]

Answer: The required confidence interval would be (2.72,2.89)

Step-by-step explanation:

Since we have given that

Mean = 2.8 pounds

Standard deviation = 0.24 pounds

n = sample size = 16

We need to find the 80% confidence interval for the mean waste.

z=1.341

So, the confidence interval will be

$\bar{x}\pm z\dfrac{\sigma}{\sqrt{n}}\\\\=(2.8\pm 1.341\times \dfrac{0.24}{\sqrt{16}})\\\\=(2.8\pm 1.314\times 0.06)\\\\=(2.8-0.07884,2.8+0.07884)\\\\=(2.72116,2.87884)$

Hence, the required confidence interval would be (2.72,2.89)

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3 years ago

The sum of three consecutive multiples of 4 is 444. Find these multiples.

melamori03 [73]

First multiple of 4 is x = 144

Second multiple of 4 is x + 4 = 144 + 4 = 148

Third multiple of 4 is x + 8 = 144 + 8 = 152

3 0

3 years ago

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If the equations 2x +y =7 and x-y=2are solved simultaneously, then y=_________

alisha [4.7K]

Answer:

y = -2x + 7 and y = x - 2

Step-by-step explanation:

2x + y = 7

y = -2x +7

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-y = -x +2

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2 years ago

What is the prime factorization of 34

Wittaler [7]

Answer:

Your answer is 2*17

Happy Valentine's day!!<3

Step-by-step explanation:

1*34

2*17

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2 years ago

Mrs. Larson washed 2/5 of her laundry. Her son washed 1/4 of it. Who washed most of the

irga5000 [103]

Just wash all of it geez

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3 years ago

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