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3 years ago

Today, everything at a store is on sale. The store offers a 20% discount.

Mathematics

1 answer:

lukranit [14]3 years ago

4 0

Answer: A- x - 0.20x = 0.8x

Step-by-step explanation:

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Function 1 is defined by the equation p= --3/2r - 5. function 2 is defined by the following table. Which function has a greater

Rus_ich [418]

0-5. Here’s your answer

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3 years ago

A triangle has verticles of a(6,-2) b(4,-4) c(1,0)

AfilCa [17]

Answer

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Step-by-step explanation:

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3 years ago

What is the greatest common multiple of 9 and 27

dusya [7]

Hi,

The greatest common multiple of 9 and 27 is 9

<em>explanations</em><em>:</em>

9 x 1 = 9

9 x 3 = 27

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2 years ago

Pleaseeeeeee helppppl asap

cluponka [151]

Answer:

Step-by-step explanation:

Let's use the rule GEMDAS (Grouping, Exponents, Multiply, Divide, Add, Subtract) from left to right. Therefore, we will simplify the equation in the parentheses. $2^{3} = 8. (1-8= -7)$ . -(-7) creates a double negative, deeming the 7 positive, because when there is two negatives the number will turn into a positive. $7^{2}$ = 49, -3 x 4= -12. Therefore the final form of the equation will be 49 - 12 = 37.

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2 years ago

The Director of Admissions at Kinzua University in Nova Scotia estimated the distribution of student admissions for the fall sem

VMariaS [17]

Answer:

Variance = 24900

Standard Deviation = 157.7973

Step-by-step explanation:

We are given the following in the question:

Number of admissions: 1000 1200 1500

Admissions Probability: 0.6 0.3 0.1

Formula:

$E(x) = \displaystyle\sum x_iP(x_i)\\E(x) = 1000(0.6) + 1200(0.3) + 1500(0.1)\\E(x) = 1110\\E(x^2) = \displaystyle\sum x_i^2P(x_i)\\E(x^2) = (1000)^2(0.6) + (1200)^2(0.3) + (1500)^2(0.1)\\E(x^2) = 1257000$

Variance =

$\sigma^2 = E(x^2) - (E(x))^2\\\sigma^2 = 1257000 -(1110)^2\\\sigma^2 =24900$

Thus, the variance is 24900.

Standard Deviation =

$\sigma = \sqrt{\sigma^2} = \sqrt{24900} = 157.7973$

Thus, the standard deviation is 157.7973

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3 years ago