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quester [9]
3 years ago
13

How do you evaluate the expression-4ac for the following conditions:

Mathematics
2 answers:
Goryan [66]3 years ago
8 0
(a) = 24
(b) = -32
(c) = 20


To evaluate the expression, take what a and c equal and substitute the numbers into the equation and solve.
Aleonysh [2.5K]3 years ago
4 0
A. -4ac
   
    -4(2)(-3)
    multiply
 
    -4(-6)
    multiply, again

    24

b. -4ac

   -4(-4)(-2)
   multiply

   -4(8)
   multiply, again

   -32

c. -4ac

    -4(-1)(5)
    multiply
 
    -4(-5)
    multiply, again

     20
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Find the probability of at least three successes in six trials of a binomial experiment in which the probability of success is 5
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Answer:

31.3%

Step-by-step explanation:

Start by doing the binomial expansion of (x+y)^6 where x represents success. This is  

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We are interested in the x^3y^3 term which represents exactly 3 successes. Since the probability of success and failure are both .5 we should be able to figure this out just using the coefficients of the terms which is  

20/64 = .3125 which is 31.25% Rounding yo the nearest tenth gives us

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3 years ago
When graphing the inequality y ≤ 2x − 4, the boundary line needs to be graphed first. Which graph correctly shows the boundary l
Volgvan

Answer:

See Below

Step-by-step explanation:

The boundary line follows the graph of y = 2x - 4 because it represents the line of maximum or minimum values the graph could take. y = 2x - 4 has a y-intercept of -4 because it is in slope-intercept form. It also has a slope of 2, so to find another point on the line, you can go up two and right one. Also, this inequality has a solid line because it is "less than or equal to" and a solid line represents the values that equal.

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IrinaVladis [17]

Answer:

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Step-by-step explanation:

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3 years ago
PLSSS HELP IF YOU TURLY KNOW THISS
dmitriy555 [2]

Answer:

B

Step-by-step explanation:

to change a mixed number into an improper fraction

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7 0
2 years ago
Read 2 more answers
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