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3 years ago

2(n+2n) what is it?i need help.

Mathematics

1 answer:

MrMuchimi3 years ago

7 0

Expand the equation which gives you
2n+4n
2n+4n=6n

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Max is paid on a weekly commission basis .he is paid a base salary of $340 on a weekly quota $8000 and commission of 4.74% on sa

vova2212 [387]

Answer:

$498.32

$14.24

Step-by-step explanation:

<u>Max gross earning was:</u>

340 + (11340 - 8000)*4.74/100 = $498.32 rounded to nearest cent

<u>Average per hour:</u>

498.32/35 = $14.24 rounded to nearest cent

8 0

3 years ago

A research team conducted a study showing that approximately 15% of all businessmen who wear ties wear them so tightly that they

Helen [10]

Answer:

a) 0.913

b) 0.397

c) 0.087

Step-by-step explanation:

We are given the following information:

We treat wearing tie too tight as a success.

P(Tight tie) = 15% = 0.15

Then the number of businessmen follows a binomial distribution, where

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

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

Now, we are given n = 15

We have to evaluate:

a) at least one tie is too tight

$P(x \geq 1) = P(x = 1) +....+ P(x = 15)\\=1 - P(x = 0)\\= 1 - \binom{15}{0}(0.15)^0(1-0.15)^{15}\\=1 - 0.087\\= 0.913$

b) more than two ties are too tight

$P(x > 2) = P(x = 3) +....+ P(x = 15)\\=1 - P(x = 0) - P(x=1) - P(x=2)\\= 1 - \binom{15}{0}(0.15)^0(1-0.15)^{15}-\binom{15}{1}(0.15)^1(1-0.15)^{14}-\binom{15}{0}(0.15)^2(1-0.15)^{13}\\=1 - 0.087 - 0.231 - 0.285\\= 0.397$

c) no tie is too tight

$P(x = 0)\\=\binom{15}{0}(0.15)^0(1-0.15)^{15}\\=0.087$

d) at least 18 ties are not too tight

This probability cannot be evaluated as the number of success or the failures exceeds the number of trials given which is 15.

The probability is asked for 18 failures which cannot be evaluated.

8 0

4 years ago

What is y-5+3-9(y+2) and the work to go with it

eduard

$y-5+3-9(y+2) \\ \\ y - 9(y + 2) - 2 \\ \\ y - 9y - 18 - 2 \\ \\ -8y - 18 - 2 \\ \\ -8y - 20 \\ \\$

The answer is: -8y - 20.

3 0

4 years ago

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-7x-27=8-1(x-19) show how to get this

Nadya [2.5K]

$-7x-27=8-1(x-19) \\
-7x-27=8-x+19\\
-6x=54\\
x=-9$

3 0

3 years ago

What are the solutions of 2x2 + 3x= –8?

serious [3.7K]

The answer is going to be x=-4

3 0

3 years ago

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