2 years ago

The discriminant finds the

1 answer:

4 0

Answer: The discriminant is the part of the quadratic formula underneath the square root symbol: b²-4ac. The discriminant tells us whether there are two solutions, one solution, or no solutions.

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The Magazine Mass Marketing Company has received 10 entries in its latest sweepstakes. They know that the probability of receivi

Serjik [45]

Answer:

P(X>4)= 0.624

Step-by-step explanation:

Given that

n = 10

p= 0.5 ,q= 1 - p = 0.5

Two fifth of 10 = 2/5 x 10 =4

It means that we have to find probability P(X>4).

P(X>4)= 1 -P(X=0)-P(X=1)-P(X=2)-P(X=3)-P(X=4)

We know that

$P(X=x)=(_{x}^{n})\ p^xq^{n-x}$

$P(X=0)=(_{0}^{10})\ 0.5^0\ 0.5^{10}=0.0009$

$P(X=1)=(_{1}^{10})\ 0.5^1\ 0.5^{9}=0.0097$

$P(X=2)=(_{2}^{10})\ 0.5^2\ 0.5^{8}=0.043$

$P(X=3)=(_{3}^{10})\ 0.5^3\ 0.5^{7}=0.117$

$P(X=4)=(_{4}^{10})\ 0.5^3\ 0.5^{7}=0.205$

P(X>4)= 1 -P(X=0)-P(X=1)-P(X=2)-P(X=3)-P(X=4)

P(X>4)= 1 -0.0009 - 0.0097 - 0.043 - 0.117-0.205

P(X>4)= 0.624

8 0

2 years ago

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A charity fundraiser charges 102 dollars per plate. If there are 85 guests at the fundraiser , how much money did they earn

Naddik [55]

Answer:

8,670

Step-by-step explanation:

because if 102 dollars per plate you take 102x85 = 8,670

5 0

3 years ago

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34 x 44 <br> Please explain to me

sladkih [1.3K]

Answer:

34*44=

1. 4*4=16

2. 4*3=12

3. repeat

4. your answer is 1,496

Step-by-step explanation:

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3 years ago

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The piecewise function h(x) is shown on the graph.

larisa [96]

Answer:

Step-by-step explanation:

-1

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3 years ago

Factorise this expression as fully as possible 2x^2+6x

AURORKA [14]

Answer:

(Factor out 2x from the expression)

2x (x +3)

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3 years ago