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4 years ago

Select from the drop-down menu to correctly compare the numbers.

Mathematics

2 answers:

Setler79 [48]4 years ago

8 0

The answer is going to be C.)

kogti [31]4 years ago

6 0

Answer:

Step-by-step explanation:

it is C just took the quiz and C is correct

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What is 28/49 in simplest form?

HACTEHA [7]

28/49 divided by 7 since is teh bigest number they can bith be divided it would give us 4/7

6 0

3 years ago

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)

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

$P(415 \leq x \leq 515) = 34.1\%$

d) P(score between 315 and 615)

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

$P(315 \leq x \leq 615) = 81.8\%$

4 0

4 years ago

Fill in the blank with the correct number. the number____ is divisible by 2,3,4,6 and 10.

olganol [36]

Answer: 180

Explanation: 180 is divisible by ALL of the numbers. 2,3,4,6 and 10.

Happy studying ^-^

7 0

3 years ago

Read 2 more answers

Oil prices are projected to increase by 75% by next May. A quart of oil currently costs $2.15. What is the projected cost of a g

ivann1987 [24]

Answer:

$3.7625

Step-by-step explanation: I may be wrong but...

If you find 75% of $2.15 it is equal to $1.6125.

Since in "increases" we are going to add $1.6125 to $2.15.

You get the answer of $3.7625.

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3 years ago

◕ A dealer sold a photocopy machine at Rs 4200 with 13% VAT to a retailer. The retailer added transportation cost of Rs 250 , pr

satela [25.4K]

Given :-

A dealer sold a photocopy machine at Rs 4200 with 13% VAT to a retailer.
The retailer added transportation cost of Rs 250 , profit Rs 300 and local tax Rs 150 and sold to consumer .
Customer has to pay 13% VAT .

To Find :-