3 years ago

Simplify (8 + 20i ) + (-17+4i)

Mathematics

2 answers:

Kitty [74]3 years ago

8 0

Answer: -9 + 24i

Step-by-step explanation:

vitfil [10]3 years ago

3 0

Answer:

20i+4i =16i-19

Step-by-step explanation:

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In a survey of market, it is found that 143 persons use white toothpaste and 135 use red toothpaste. If 70 of them use both the

denpristay [2]

Answer:

let W and R represent white toothpaste and red toothpaste represently

n(W)=143

n(R)=135

n(WnR)=70

n( WuR)=?

Now,

n(WuR)=n(W)+n(R)_n(WnR)

=143+135_70

=208

that's all don't forget to write therefore.

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3 years ago

Two number add to 336 and the first is bigger that the second. What are the two numbers?

makvit [3.9K]

336 divided by 2 is 168.

so just change it up.

the two numbers can be 166+170

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3 years ago

In a manufacturing plant that produces new computers, a 0.15 probability exists that a computer will be defective. if five compu

Sindrei [870]

The probability that all of them will be defective is 0.0000759375

Explanation

The general Binomial Probability formula is....

$P= ^nC_{r}*p^r*(1-p)^n^-^r$ , where p is the probability of success, n is the total number of trials and r is the desired numbers of trials.

Given, the probability that a computer will be defective is 0.15 , so p = 0.15

Five computers are manufactured and we need to find the probability that all of them will be defective. That means, n = 5 and r = 5

Now according to the above formula....

$P= ^5C_{5}*(0.15)^5*(1-0.15)^5^-^5 \\ \\ P= 1*(0.15)^5* (0.85)^0\\ \\ P=(0.15)^5 =0.0000759375$

So, the probability that all of them will be defective is 0.0000759375

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3 years ago

Compare the pair of fractions. ( <,>,=) 3/4__5/6

Andrew [12]

Answer:

3/4 is less < than 5/6

Step-by-step explanation:

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3 years ago

Frank has a batting average of .255. Write this decimal as a fraction in simplest form.

Artist 52 [7]

9/40 because when you put it in fraction form its 225/1000 then you simplify!

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3 years ago

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