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3 years ago

2:3 = 6:? 4:7 = x:42 2x:48= 3:12 12:15= x:20

Mathematics

1 answer:

Blizzard [7]3 years ago

7 0

Answer:

1)9

2)24

3)6

4)17

Just look at the two numbers you know and see how to get from one to the other.

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Half a number is at least 2 units from 20. write the sentence as an absolute value inequality

Anuta_ua [19.1K]

Answer:

|1/2x - 20| ≥ 2

Step-by-step explanation:

The number is half of two and at least two units away.

8 0

3 years ago

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Assume that the weight of two year old babies have distribution that is approximately normal with a mean of 29 pounds and a stan

Lana71 [14]

Answer:

25.15 ponds is the weight of two year old baby corresponds to 10th percentile.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 29 pounds

Standard Deviation, σ = 3 pounds

We are given that the distribution of weight of two year old babies is a bell shaped distribution that is a normal distribution.

Formula:

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

We have to find the value of x such that the probability is 0.10

P(X < x)

$P( X < x) = P( z < \displaystyle\frac{x - 29}{3})=0.10$

Calculation the value from standard normal z table, we have,

$P(z < -1.282) = 0.10$

$\displaystyle\dfrac{x - 29}{3} = -1.282\\x = 25.154 \approx 25.15$

Thus, 25.15 ponds is the weight of two year old baby corresponds to 10th percentile.

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3 years ago

1. What statement about 8 multiplied by 7/4

ANEK [815]

Answer: B

Step-by-step explanation: 7/4 time 8/1 is 56/4 which simplifies to 14. B is the only statement that satisfies this

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2 years ago

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In an expression<br>(8/9) squared (-81)+3/5dividedby-9/10

Nitella [24]

If you wanted to calculate it, there it is:
$(\frac{8}{9})^2 (-81)+\frac{\frac{3}{5}}{\frac{-9}{10}} = \frac{64}{81}*(-81)+\frac{3}{5}*\frac{10}{-9} = -64+\frac{-2}{3}= \\ =-64-\frac{2}{3}=\frac{-192-2}{3}=\frac{-194}{3}$

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3 years ago

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What is 4xy - 5y² - 3x² from 5x + 3y² - xy ?

andre [41]

Refer the attachment for your answer

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3 years ago

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