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alekssr [168]
3 years ago
5

Please show your work simplify the expression (-5-c)(-1)

Mathematics
2 answers:
frozen [14]3 years ago
4 0
(-5-c)(-1)
can write as (-1)(-5-c)
multiply(-1) to (-5) then multiply (-1) to(-5)
answer 5+c
daser333 [38]3 years ago
4 0

How to Get Answer:

\mathrm{Remove\:parentheses}:\quad \left(-a\right)=-a\\=-\left(-5-c\right)\cdot \:1\\\mathrm{Multiply:}\:\left(-5-c\right)\cdot \:1=\left(-5-c\right)\\=-\left(-c-5\right)\\Distribute\:parentheses\\=-\left(-5\right)-\left(-c\right)\\Apply\:minus-plus\:rules\\\left(-a\right)=a\\Answer: =5+c

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How do I do this?
Maksim231197 [3]

Answer: There is no question so I don't know how to answer your question

Step-by-step explanation:

7 0
2 years ago
The number of years of education of self-employed individuals in the united states has a population mean of 13.6 years and a pop
muminat

Answer:

0.3 years

Step-by-step explanation:

With problems like these, I always like to start by breaking down the information into smaller pieces.

μ = 13.6

σ = 3.0

Survey of 100 self-employed people

(random variable) X = # of years of education

So now we have some notation, where μ represents population mean and σ represents population standard deviation. Hopefully, you already know that the sample mean of x-bar is the same as the population mean, so x-bar = 13.6. Now, the question asks us what the standard deviation is. Since the sample here is random, we can use the Central Limit Theorem, which allows us to guess that a distribution will be approximately normal for large sample sizes (that is, n ≥ 30). In this case, our sample size is 100, so that is satisfied. We're also told our sample is random, so we're good there, too. Now all we have to do is plug some stuff in.

The Central Limit Theorem says that for large values of n, x-bar follows an approximately normal distribution with sample mean = μ and sample standard deviation = σ/√n. So, with that info, all we need to do to find the standard deviation of x-bar is to plug our σ and n into the above formula.

σ(x-bar) = σ/√n

σ(x-bar) = 3.0/√100

σ(x-bar) = 0.3

So your answer here is .3 years.

7 0
3 years ago
Find the exact value of tan 15 degrees
pentagon [3]
<span>tan(15) = 
sin(15) / cos(15) = 
sin(45 - 30) / cos(45 - 30) = 
[ sin(45)cos(30) - sin(30)cos(45) ] / [ cos(45)cos(30) + sin(45)sin(30)] 

Since sin(45) = cos(45) = √2/2, you can just factor that out from the top and bottom 
[ cos(30) - sin(30) ] / [ cos(30) + sin(30)] 
[ √3/2 - 1/2 ] / [ √3/2 + 1/2] 
(√3 - 1) / (√3 + 1) 
(√3 - 1)^2 / (√3+1)(√3 - 1) 
(√3 - 1)^2 / (3 - 1) 
(3 - 2√3 +1) / 2 
2 - √3 

There's also a formula for tan(a-b), but I couldn't remember it off hand.</span>
4 0
3 years ago
Jimmy is about to pick a marble from the jar. How likely is it that he will pick a blue marble?
Sav [38]

Answer:

depends on how many different colors there are in the jar and how many marbles there are.

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Whats 1 + 1 = ? I don't know? But if you answer you will be brainiest and get 100 points free!
Arada [10]
2 is your answer lol
8 0
3 years ago
Read 2 more answers
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