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Temka [501]
3 years ago
11

PLEASEEEE HELPPPPPPPPPP

Mathematics
2 answers:
natita [175]3 years ago
8 0
5 the answer I took the test
Alik [6]3 years ago
6 0

Answer:

b=5

Step-by-step explanation:

8b+12 = 52

8b = 52-12

8b = 40

Therefore, b= 40/8 = 5!

Hope it helps! :)

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Assume the random variable X has a binomial distribution with the given probability of obtaining a success. Find the following p
Verizon [17]

Answer:

P(X = 17) = 0.3002

Step-by-step explanation:

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

In this problem we have that:

n = 18, p = 0.9

We want P(X = 17). So

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 17) = C_{18,17}.(0.9)^{17}.(0.1)^{1} = 0.3002

P(X = 17) = 0.3002

4 0
4 years ago
Read 2 more answers
If a and b are the zeros of the quadratic polynomial 4x2+4x+1, find the value of a/b+b/a?
kow [346]

Answer:

2

Step-by-step explanation:

First you need to factor your quadratic equation. You'll get (2x+1)(2x+1). Your two zeroes will be -1/2 and -1/2 with one being a, the other b. So then

a/b = (-1/2)/(-1/2)

and

b/a = (-1/2)/(-1/2)

Both reduce to 1. So a/b + b/a is 1+1=2

7 0
3 years ago
Find the volume of a cylinder with the radius 5 millimeters and height 22 millimeters. Round to the nearest hundredth
Alexxx [7]
plug : pi · 5^2 · 22 into a calculator and that is the answer
8 0
3 years ago
Help help help help please!!!!
Ilya [14]

Answer:

74 feet

Step-by-step explanation:

24^2 + 70^2 = 74^2

Pythagorean Theorem

5 0
3 years ago
4 x (2 x 7) = (4 x 2) x ___
natka813 [3]

Answer:

x=0

Step-by-step explanation:

8 0
3 years ago
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