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2 years ago

I need help please .

Mathematics

1 answer:

Black_prince [1.1K]2 years ago

3 0

Answer:

-7-6b+3b-5

= -12-3b

= - 3(4+b)

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Rewrite the expression using positive exponents 1. 1/9x^-2y^-1 2. a^-5*a^-8

NikAS [45]

Answer:

Property : a^-b = 1/a^b

Using this property, we can rewrite the expression using positive exponents :

$1. \frac{1}{9}*x^{-2} *y^{-1} =\frac{1}{9}\frac{1}{x^{2} } \frac{1}{y} =\frac{1}{9x^{2} y} \\2. a^{-5} a^{-8} =\frac{1}{a^{5}a^{8} } =\frac{1}{a^{13} }$

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2 years ago

Select all the values of x so g(x) is not a function.

alexdok [17]

The answer is 6 and 9
Step-by-step explanation: We are trying to figure out what makes the chart not a function. A function is is one input equals one output.
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3 years ago

What are the solutions of the equation x^4-5x^2-36=0 use factoring to solve

KATRIN_1 [288]

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7 0

3 years ago

37% of women consider themselves fans of professional baseball. you randomly select six women and ask each if she considers hers

valina [46]

Answer:

(a) 2.22

(b) 1.3986

Step-by-step explanation:

Let X denote the number of women who consider themselves fans of professional baseball.

The proportion of women who consider themselves fans of professional baseball is, p = 0.37.

A random sample of n = 6 women are selected and each was asked if she considers herself a fan of professional baseball.

Each woman's reply is independent of the others.

The random variable X thus follows a binomial distribution with parameters n = 6 and p = 0.37.

(a)

Compute the mean of the binomial distribution as follows:

$\text{Mean}=np=6\times 0.37=2.22$

(b)

Compute the variance of the binomial distribution as follows:

$\text{Variance}=np(1-p)=6\times 0.37\times (1-0.37)=1.3986$

(c)

Compute the standard deviation of the binomial distribution as follows:

$\text{Standard Deviation}=\sqrt{np(1-p)}=\sqrt{6\times 0.37\times (1-0.37)}=1.183$

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2 years ago

Math test! i need help!

FrozenT [24]

Answer:

First option

Step-by-step explanation:

Have a nice day

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2 years ago