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3 years ago

What’s a coefficient

Mathematics

2 answers:

My name is Ann [436]3 years ago

5 0

Answer:

The number before a variable. For example, 4x. 4 would be the coefficient, and x would be the variable.

Ratling [72]3 years ago

5 0

Answer:

A numerical or constant quantity placed before and multiplying the variable in a algebraic expression

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Ask Your Teacher Consider a binomial random variable with n = 5 and p = 0.8. Let x be the number of successes in the sample. Eva

Readme [11.4K]

Answer:

0.942 is the required probability.

Step-by-step explanation:

We are given the following in the question:

x is a binomial random variable with n = 5 and p = 0.8.

Then,

$P(X=x) = \binom{n}{x}.p^x.(1-p)^{n-x}$

where n is the total number of observations, x is the number of success, p is the probability of success.

We have to evaluate:

$P(x \geq 3) = P(x = 3) + P(x = 4) +P(x=5)\\\\= \binom{5}{3}(0.8)^3(1-0.8)^2 +\binom{5}{4}(0.8)^4(1-0.8)^1 +\binom{5}{5}(0.8)^5(1-0.8)^0\\\\= 0.2048 +0.4096+0.3276=0.942$

0.942 is the required probability.

4 0

3 years ago

What is 7/8 of 8/9?<br><br> if you could, include an explanation.<br> thanks

storchak [24]

Answer:

63/64

Step-by-step explanation:

cross multiplication

7*9=63

8*8= 64

4 0

2 years ago

Read 2 more answers

Find the length of a line joining the point ( 4,3 ) and origin .

GalinKa [24]

Answer:

i think you have to count till you get to 4 or 3 then the remaining you plus with the 3

5 0

3 years ago

Read 2 more answers

One solution to a quadratic function, h, is given.

Margaret [11]

Answer:

B. The other solution to function $h$ is $-4-i\,7$ .

Step-by-step explanation:

From Algebra, we remember that quadratic functions of the form $a\cdot x^{2}+b\cdot x + c$ has solutions of the form:

$x = \frac{-b\pm \sqrt{b^{2}-4\cdot a\cdot c}}{2\cdot a}$ , where both are complex if and only if $\sqrt{b^{2}-4\cdot a \cdot c}< 0$ .

Hence, if one solution of the quadratic function is $-4+i\,7$ , then the other solution is $-4-i\,7$ . The correct answer is B.

7 0

2 years ago

What is the answer to the problem (m-3)(-10)

OverLord2011 [107]

The answer is -10m + 30

8 0

2 years ago