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3 years ago

-2 1/3 × 2 5/8 Perform the indicated operation

Mathematics

2 answers:

Karolina [17]3 years ago

8 0

Answer:

-6 1/8

Step-by-step explanation:

=-7/3 *21/8

=147/24

=-6 3/24

=-6 1/8

Sloan [31]3 years ago

4 0

Answer:

-49/8

Step-by-step explanation:

Convert both numbers to improper fractions:

-7/3 times 21/8. (-7)(21)

Now multiply these together, obtaining ---------------

3(8)

Reducing this, we get:

(-7)(7) 49

-------- = - ------

8 8

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Six percent of computer chips produced by Cheapo Chips are defective. Each month a random sample of 200 chips manufactured that

zzz [600]

Using the binomial distribution, it is found that the mean of X is of 12, with a standard deviation of 3.36.

For each chip, there are only two possible outcomes, either it is defective, or it is not. The probability of a chip being defective is independent of any other chip, hence, the binomial distribution is used to solve this question.

Binomial probability distribution

Probability of exactly <u>x successes on n repeated trials, with p probability.</u>

The mean of the binomial distribution is:

$E(X) = np$

The standard deviation of the binomial distribution is:

$\sqrt{V(X)} = \sqrt{np(1-p)}$

In this problem:

Six percent of computer chips produced by Cheapo Chips are defective, hence $p = 0.06$ .

Each month a random sample of 200 chips manufactured that month are taken, hence $n = 200$

Then:

$E(X) = np = 200(0.06) = 12$

$\sqrt{V(X)} = \sqrt{np(1 - p)} = \sqrt{200(0.06)(0.94)} = 3.36$

The mean of X is of 12, with a standard deviation of 3.36.

A similar problem is given at brainly.com/question/12473640

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1 year ago

Guys this is a real problem!!! Will mark brainliest!!

Igoryamba

311(1.50)+.50x=385.50

would be your equation

4 0

2 years ago

Read 2 more answers

What the perimeter? Will give brainliest (no links)

OLEGan [10]

Just add them up 15+5+3+8

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2 years ago

For his long distance phone service, Scott pays a $6 monthly fee plus 8 cents per minute. Last month, Scott's long distance bill

Dominik [7]

$\text{We need to find how many minutes Scott had in his phone service}\\\\\text{We know that he pays \$6 a month, 0.08 cents per minute, and was}\\\text{billed \$17.92 in total}\\\text{Turn this into an equation:}\\\\17.92 =0.08x+6\\\\\text{Solve for x:}\\\\17.92 =0.08x+6\\\\\text{Subtract 6 from both sides}\\\\11.92=0.08x\\\\\text{Divide by 0.08}\\\\x = 149\\\\\boxed{\text{Scott was billed for 149 minutes}}$

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2 years ago

Please help quick will give brainliest!

irina [24]

Answer: Choice A) There must be a vertical asymptote at x = c

Explanation:

The first limit $\displaystyle \lim_{x\to c^{-}}h(x) = -\infty$ says that as x approaches c from the left side, the f(x) or y values approach negative infinity. So the graph goes down forever as x approaches this c value from the left side.

The limit $\displaystyle \lim_{x\to c^{+}}h(x) = \infty$ means that as x approaches c from the right side, the y values head off to positive infinity.

Either of these facts are enough to conclude that we have a vertical asymptote at x = c. We can think of it like an electric fence in which we can get closer to, but not actually touch it.

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2 years ago