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Ilya [14]
4 years ago
10

Evaluate 8x - 1 when x = 3

Mathematics
2 answers:
Firlakuza [10]4 years ago
7 0

x=3/7  Decimal is x=<em><u>0.428571</u></em><em>  wanted to take an extra step and im glad to help</em>

pychu [463]4 years ago
6 0

X=3 so plug 3 in where the x currently is. You will get 8(3)-1. First distribute the 8 to everything in the parenthesis; 8(3)=24, next subtract, 24-1=23.

Answer is 23

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3 years ago
Use the given values of n and p to find the minimum usual value μ−2σ and the maximum usual value μ+2σ. Round to the nearest hund
lbvjy [14]

Answer:

μ−2σ = 1,089.26

μ+2σ = 1,097.62

Step-by-step explanation:

The standard deviation of a sample of size 'n' and proportion 'p' is:

\sigma=\sqrt{\frac{p*(1-p)}{n} }

If n=1139 and p =0.96, the standard deviation is:

\sigma=\sqrt{\frac{p*(1-p)}{n}}\\\sigma = 0.001836

The minimum and maximum usual values are:

\mu-2\sigma = (p-2\sigma)*n\\\mu+2\sigma = (p+2\sigma)*n

\mu-2\sigma = (0.96-2*0.001836)*1139\\\mu-2\sigma = 1,089.26\\\mu+2\sigma = (0.96+2*0.001836)*1139\\\mu+2\sigma = 1,097.62

5 0
3 years ago
The height of a triangle is 4 times its base. if he are of a triangle is 200cm, what is the height
uranmaximum [27]
A = (h * b) / 2
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200 = (b(4b) / 2
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400 = 4b^2
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sqrt 100 = b
10 = b ..... base is 10 cm

h = 4b
h = 4(10)
h = 40 <=== height is 40 cm
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prisoha [69]

a square as the distance between the lengths and widths are 3

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4 years ago
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Answer:

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7 0
3 years ago
Read 2 more answers
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