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3 years ago

Can you please help me with this question

Mathematics

2 answers:

uysha [10]3 years ago

4 0

Answer is C lines A and K

Artyom0805 [142]3 years ago

3 0

The anwser is d because perpendicular lines go straight up and down.

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If the radius of a circle is 10 feet, how long is the arc subtended by an angle measuring 81°?

mihalych1998 [28]

Circumference of entire circle = 2 * PI * 10
circumference of entire circle = 62.832 feet
81 degrees is (9/40) of a circle
62.832 * (9/40) = 14.1372 

Source:
http://www.1728.org/radians.htm

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3 years ago

Find two consecutive positive even integers such that the sum of their squares is 452 please show work

kirza4 [7]

16 squared = 256
14 squared = 196
256 + 196 = 452.

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3 years ago

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jonny [76]

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3 years ago

In a certain city, the daily consumption of water (in millions of liters) follows approximately a gamma distribution with α = 2

Ne4ueva [31]

Answer:

The probability that on any given day the water supply is inadequate $0.1991$

Step-by-step explanation:

Given

α = 2 and β = 3

As per Gamma distribution Function

$P(X>9)= 1-P(X\leq 9)\\$

Expanding the function and putting the given values, we get -

$[tex]1 - \int\limits^9_0 {f(x;2,3)} \, dx \\1- \int\limits^0_0 {\frac{1}{9}xe^{\frac{-x}{3} } \, dx\\\\= 1- \frac{1}{9} [x(-3e^{\frac{-x}{3}}) -\int\limits {(-3e^{\frac{-x}{3}})} \, dx]^9_0= 1- 1/9 [x(-3e^{\frac{-x}{3}}) -9e^{\frac{-x}{3}})} \, dx]^9_0\\1-((\frac{-1}{3} *9*e^({\frac{-9}{3}})- e^(\frac{-9}{3}))- ((\frac{-1}{3} *0*e^(\frac{-9}{3})-e^{\frac{-0}{3}})\\1-((-3e^{\frac{-9}{3} }-e^{\frac{-9}{3}}-(0-1))\\1-(1-4e^{-3})\\1-(1-0.1991)\\1-0.8009\\0.1991$

The probability that on any given day the water supply is inadequate $0.1991$

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3 years ago

Help solve this one please Final exam will give 99 points

nydimaria [60]

Answer:

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers