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3 years ago

What’s the square root of 50?

2 answers:

7 0

The square root of a number is always going to be done like this. If 50 isn't a square root, what are the square root numbers multiplied by something else to make 50

25 is a square root because of 5 times 5 is 25

√25 x 2 = 50

Next carry out the 5 outside the square root and you would get

5√2 = √50

5√2 is your answer

Paladinen [302]3 years ago

3 0

Simplify √50.

Factor out 50.

√50 = √(5 x 5 x 2)

Note that there are 2 5's inside the parenthesis. Two of the same number when multiplied would become a whole number:

√(5 x 5) = 5

√50 = √(5 x 5 x 2) = 5√2

5√2 is your answer

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kondor19780726 [428]

Answer:

Step-by-step explanation:

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3 years ago

A supplier delivers an order for 20 electric toothbrushes to a store. By accident, three of the electric toothbrushes are defect

krek1111 [17]

Answer:

The probability that the first two electric toothbrushes sold are defective is 0.016.

Step-by-step explanation:

The probability of an event, say E occurring is:

$P (E)=\frac{n(E)}{N}$

Here,

n (E) = favorable outcomes

N = total number of outcomes

Let X = number of defective electric toothbrushes sold.

The number of electric toothbrushes that were delivered to a store is, n = 20.

Number of defective electric toothbrushes is, x = 3.

The number of ways to select two toothbrushes to sell from the 20 toothbrushes is:

${20\choose 2}=\frac{20!}{2!(20-2)!}=\frac{20!}{2!\times 18!}=\frac{20\times 19\times 18!}{2!\times 18!}=190$

The number of ways to select two defective toothbrushes to sell from the 3 defective toothbrushes is:

${3\choose 2}=\frac{3!}{2!(3-2)!}=\frac{3!}{2!\times 1!}=3$

Compute the probability that the first two electric toothbrushes sold are defective as follows:

P (Selling 2 defective toothbrushes) = Favorable outcomes ÷ Total no. of outcomes

$=\frac{3}{190}\\$

$=0.01579\\\approx0.016$

Thus, the probability that the first two electric toothbrushes sold are defective is 0.016.

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3 years ago

Find the percent of change. Where necessary, round to the nearest percent. Describe the percent of change as a percent of increa

deff fn [24]

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Serga [27]

It is C, D and F

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If a-1/a=4 then find a^2-1/a^2

Pavel [41]

Answer:

This is the ever best answer. All the best

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