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Liula [17]
3 years ago
14

Charlie went to Juarez, Mexico, on a shopping trip. He bought silver rings at $5 each

Mathematics
1 answer:
Misha Larkins [42]3 years ago
5 0

Answer:

7 bracelets & 10 rings

Step-by-step explanation:

I sadly don’t have the explanation because I’m trying to find it but I only have the answer

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Someone help meeee lollll
den301095 [7]

Answer:

Step-by-step explanation:

The best way to do this is to first remove the parenthesis by distributing the negative into them. Then we will group the like terms together, moving their respective signs with them, then we will simplify.  For the first one, after distributing the negative into the parenthesis (remember that a negative in front of a set of parenthesis containing a polynomial changes the signs in front of each term within the polynomial; negatives become positives and positives become negatives):

3x^2-6x+11-10x^2+4x-6 and then grouping like terms next to each other:

3x^2-10x^2-6x+4x+11-6 (this step is not completely necessary; I just encourage new learners to do it so as to not miss any of the like terms)

The above then simplifies to

-7x^2-2x+5

The next one, after distributing the negative into the parenthesis:

-3x^2-5x-3+10x^2+7x-2 and then grouping like terms next to each other (remember to move their signs with them!):

-3x^2+10x^2-5x+7x-3-2 which simplifies to

7x^2+2x-5

Now for the last one:

12x^2+6x-5-5x^2-8x+12 and

12x^2-5x^2+6x-8x-5+12 which simplifies to

7x^2-2x+7

6 0
3 years ago
Please help thank you.
Brilliant_brown [7]
Question 1:
For that point where all the lines intersect to be an incenter, the following must be true
4x - 1 = 6x - 5
Subtract both sides by 6x
-2x -1 = -5
Add both sides by 1
-2x = -4
Divide both sides by -2
x= 2

Question 2:
Plug in x=2 into any of the two equations.

You get 7.

Have an awesome day! :)
5 0
3 years ago
Which conversion factor would you use to convert from meters to feet?
butalik [34]
<span>1.Take a measurement in feet.
</span>2.Multiply or divide your measurement by a conversion factor.<span> 
</span>
4 0
3 years ago
Read 2 more answers
An Epson inkjet printer ad advertises that the black ink cartridge will provide enough ink for an average of 245 pages. Assume t
Neko [114]

Answer:

35.2% probability that the sample mean will be 246 pages or more

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal probability distribution

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

In this question, we have that:

\mu = 245 \sigma = 15, n = 33, s = \frac{15}{\sqrt{33}} = 2.61

What the probability that the sample mean will be 246 pages or more?

This is 1 subtracted by the pvalue of Z when X = 246. So

Z = \frac{X - \mu}{\sigma}

By the Central Limit Theorem

Z = \frac{X - \mu}{s}

Z = \frac{246 - 245}{2.61}

Z = 0.38

Z = 0.38 has a pvalue of 0.6480.

1 - 0.6480 = 0.3520

35.2% probability that the sample mean will be 246 pages or more

4 0
3 years ago
11. |6- 15| - |5(-4)|= ?<br> A.-29<br> B. -11<br> C. 1<br> D. 11<br> E. 29
Burka [1]

Answer:

B

Step-by-step explanation:

|6- 15| - |5(-4)| =

|-9| - |-20| =

(9)- (20) =

-11

4 0
2 years ago
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