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oee [108]
3 years ago
10

Find the square: (5x - 4y)2 (and please put the process of solving the equation)

Mathematics
1 answer:
satela [25.4K]3 years ago
7 0
(5x-4y)^2
(5x-4y)(5x-4y)

Multiply each term in one bracket in turn by the terms in the other bracket

(5x)(5x) = 25x^2
(5x)(-4y)=-20xy
(-4y)(5x)=-20xy
(-4y)(-4y)=16y^2

Put them together we have
25x^2-20xy-20xy-16y^2
25x^2-40xy-16y^2
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Suppose a basketball player has made 217 out of 302 free throws. If the player makes the next 3 free throws, I will pay you $23.
Anna [14]

Answer:

-$0.90

Step-by-step explanation:

There are only two possible outcomes, winning $23 (W) or losing $15 (L). Therefore:

P(W) + P(L) = 1

The probability of the player making his next 3 free throws (P(W)) is:

P(W) = \frac{217}{302}*\frac{217}{302}*\frac{217}{302}\\P(W) = 0.37098

The probability of the player NOT making his next 3 free throws (P(L)) is:

P(L) = 1 - P(W) = 1 - 0.37098\\P(L) = 0.62902

Expected value (EV) is given by the payoff of each outcome multiplied by its probability:

EV = (23*0.37098) -(15*0.62902)\\EV = -\$0.90

The expected value of the proposition is -$0.90

6 0
3 years ago
What are the x and y-intercepts of the line described by the equation?
nirvana33 [79]

Answer:

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Step-by-step explanation:

7 0
3 years ago
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What is the slope of the line that passes through the points (-2, 6) and (4, - 2)?
Irina-Kira [14]

Step-by-step explanation:

slope(m)= y2-y1/x2-x1

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= -8/6

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The average of five numbers is 790.6. If the first four numbers are 80.2, 91.6,123,and 204.7,what is the sum of the five numbers
aleksklad [387]

Answer:

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Step-by-step explanation:

80.2 + 91.6 + 123 + 204.7 + x = 790.6

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9x-30 I’m pretty sure!
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2 years ago
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