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3 years ago

What is 48 percent of 199?

Mathematics

2 answers:

Firdavs [7]3 years ago

8 0

The answer to this question is 95.52

mrs_skeptik [129]3 years ago

4 0

I hope this helps you

?.%48=199

?.48/100=199

?=199.100/48

?=414,5

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Answer:

Step-by-step explanation:

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2 years ago

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The national average for the math portion of the College Board’s Scholastic Aptitude Test

Alex73 [517]

Answer:

a) 0.1587

b) 0.023

c) 0.341

d) 0.818

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 515

Standard Deviation, σ = 100

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

Formula:

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

a) P(score greater than 615)

P(x > 615)

$P( x > 615) = P( z > \displaystyle\frac{615 - 515}{100}) = P(z > 1)$

$= 1 - P(z \leq 1)$

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

$P(x > 615) = 1 - 0.8413 = 0.1587 = 15.87\%$

b) b) P(score greater than 715)

$P(x > 715) = P(z > \displaystyle\frac{715-515}{100}) = P(z > 2)\\\\P( z > 2) = 1 - P(z \leq 2)$

Calculating the value from the standard normal table we have,

$1 - 0.977 = 0.023 = 2.3\%\\P( x > 715) = 2.3\%$

c) P(score between 415 and 515)

$P(415 \leq x \leq 515) = P(\displaystyle\frac{415 - 515}{100} \leq z \leq \displaystyle\frac{515-515}{100}) = P(-1 \leq z \leq 0)\\\\= P(z \leq 0) - P(z < -1)\\= 0.500 - 0.159 = 0.341 = 34.1\%$

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d) P(score between 315 and 615)

$P(315 \leq x \leq 615) = P(\displaystyle\frac{315 - 515}{100} \leq z \leq \displaystyle\frac{615-515}{100}) = P(-2 \leq z \leq 1)\\\\= P(z \leq 1) - P(z < -2)\\= 0.841 - 0.023 = 0.818 = 81.8\%$

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4 years ago

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Answer: y= -1/4

Step-by-step explanation: _4y+8=9

-4Y=1 subtract the 8 (-8) from both sides

divide 4 by both sides and get -1/4

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3 years ago

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The perimeter of the rectangle below is 134 units. Find the length of side RS. Write your answer without variables

Eddi Din [679]

Answer:

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Step-by-step explanation:

Given:

Length (PS) = $4y + 1$

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Required:

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Perimeter of a rectangle = 2(length + width)

Plug in the values into the equation

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134 = 2[4y + 1 + 3y + 3]

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Subtract 8 from each side of the equation

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Divide both sides by 14.

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Plug in the value of y

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3 years ago

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Ede4ka [16]

Answer:

corresponding angles

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Step-by-step explanation:

solve your equation

9x+8 = 4x+18

subtract 4x from each side

5x + 8 = 18

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divide by 5

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insert x=2 into original equations to make sure you get the same answer.

9(2) + 8 = 26

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