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ankoles [38]
3 years ago
9

let me know if anyone needs any help with pre algebra! also, i can help with algebra regarding multiplying polynomials and balan

cing equations.
Mathematics
2 answers:
AnnZ [28]3 years ago
5 0
Ok and thx and i won't hesitate to ask         
Alekssandra [29.7K]3 years ago
3 0
I will be taking algebra next. I just need to finish my physics class. I will defenetly be requesting your assistance. Thanks!
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Put these in order from least to greatest 0.5, -3/2, -1 1/3, - 2.25<br> Please help
makvit [3.9K]

Answer:

-11/3, -2.25, -3/2, 0.5

Step-by-step explanation:

4 0
3 years ago
PLEASE HELP!! POLYNOMIAL!
german
Just combine like terms:   all of the x^2 together, all of the x's together and all of the numbers:

3x2+5x2+5x-2-1
8x2+5x-3 simplified, so letter A
4 0
3 years ago
Read 2 more answers
HELP! Simon invests in a medical company. He buys the stock at $189.35 and sells it for $167.78. What is the percent of decrease
myrzilka [38]
167.78 / 189.35 = .88608 * 100 = 88.6083971481 round it you get 89
3 0
3 years ago
Since the area under the normal curve within two standard deviations of the mean is 0.95, the area under the normal curve that c
alukav5142 [94]

Answer:

X \sim N (\mu ,\sigma)

And for this case we know this condition:

P(\mu-2\sigma

By the complement rule we know that:

P(X< \mu -2\sigma \cup X>\mu +2\sigma) = 1-0.95=0.05

But since the distribution is symmetrical we know that:

P(X\mu +2\sigma) = 0.025

So then the statement for this case is FALSE.

b. False

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

For this case if we define the random variable of interest X and we know that this random variable follows a normal distribution:

X \sim N (\mu ,\sigma)

And for this case we know this condition:

P(\mu-2\sigma

By the complement rule we know that:

P(X< \mu -2\sigma \cup X>\mu +2\sigma) = 1-0.95=0.05

But since the distribution is symmetrical we know that:

P(X\mu +2\sigma) = 0.025

So then the statement for this case is FALSE.

b. False

5 0
3 years ago
Christian's bill at a restaurant is $840.If Christian's wants to leave a 17% tip, how much tip should he leave?
Ilya [14]
Hey there!


840 = 100%

x = 17%

840/x = 100%/17%

(840/x) * x = (100/17) * x 840 = <span>5.8823529411765
</span>
<span>= 840/5.8823529411765 = 142.80

The correct answer to your question is option C.

The tip Christian should leave is $142.80.

Hope this helps you.
Have a great day!
</span>
5 0
3 years ago
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