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3 years ago

Rút gọn M=[ căn x -2/x-1- căn x +2/x+2 căn x+ 1] nhân x bình-2x+1/2 với x>0 x khác 1

Mathematics

1 answer:

Ymorist [56]3 years ago

3 0

Answer:

Step-by-step explanation:

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Assume you know that a hot-air balloon is currently inflated with a certain amount of air and that the amount is a percent of th

Gemiola [76]

Answer:

Percent air is calculated as:

Percent air = Current amount/Total amount *100

Solve for total amount of air:

Total amount = Current amount / Percent air * 100

Substitute the values in hand to get the answer

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3 years ago

BRAINLIEST ASAP! PLEASE HELP ME :)

Ivenika [448]

See above explanation

I am joyous to assist you anytime.

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3 years ago

Scores on a dental anxiety scale range from 0 (no anxiety) to 20 (extreme anxiety). The scores are normally distributed with a

solniwko [45]

Answer:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

Step-by-step explanation:

The following information is missing in the question:

We have to find z-score for the given score on this dental anxiety scale: 12, 6

We are given the following information in the question:

Mean, μ = 11

Standard Deviation, σ = 4

We are given that the distribution of score is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

where x is the given score on this dental anxiety scale.

For x = 12

$z_{score} = \displaystyle\frac{12-11}{4} = 0.25$

For x = 6

$z_{score} = \displaystyle\frac{6-11}{4} = -1.25$

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3 years ago

A pen is $1 cheaper than a stapler. Their total price is $5.20. Find the price of the pen.

Leno4ka [110]

$1.60 is the answer you divided 5.20 divided by the two items and you get 2.6 which you subtract the 1 dollar and get 1.6

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3 years ago

The total area of the United States is 3.79 million square miles, and Texas covers 0.27 million square miles. A meteor falls fro

g100num [7]

The probability that it strikes Texas given that it strikes the US will be "0.071".

Given that,

The total area of US,

P(U) = 3.79 million square miles

Area covered be Taxes,

P(T) = 0.27 million square miles

According to the Baye's theorem,

→ $P(\frac{T}{U} ) = \frac{P(T)\times P(\frac{U}{T} )}{P(U)}$

By substituting the values, we get

→ $\frac{P(T)}{P(U)} = \frac{0.27}{3.79}$

→ $=0.071$

Thus the above answer is correct.

Learn more about probability here:

brainly.com/question/16426250

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2 years ago