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3 years ago

PLEASE HELP!! I WILL GIVE BRAINLIEST

Mathematics

2 answers:

sattari [20]3 years ago

7 0

Answer: (a) The rate that the point 8,28 represents is 3.5 cm/s since 28/8 = 3.5

(b) The unit rate is 3.5 cm/s since the rate is constant.

(c) The two points lie on the same line and that both points results to a rate of 3.5 cm/s.

Step-by-step explanation:

slavikrds [6]3 years ago

4 0

Answer:

Step-by-step explanation:

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Give one example of when you would make a frequency table to solve a problem

Ulleksa [173]

For example, you are trying to study the effects of depression in women and men.
Suppose you used a scale for depression in a form of test. There are a lot of raw scores given since your participants are over a hundred. You can use a frequency table to cluster and categorize the parameters which are the raw scores in a more tabled setting for example

Raw scores f
1-5 1
6-10 5
11-15 9
16-20 55

Statistics. Statistics is a branch of mathematics which is the scientific study of mathematical values pertaining to qualitative descriptions and transcribe them into quantifying values such as the descriptive statistics and infuses these quantities in the field of inferential statistics. In these two categories involve probabilities, distribution and deviations which are mainly compositions of the descriptive statistics. Inferential statistics will involve comparison and variation of the given values. Methods are t-test, analysis of variance, and two-way analysis of variance and other methods.

3 0

3 years ago

Assuming that the heights of college women are normally distributed with mean 64 inches and standard deviation 1.5 inches, what

professor190 [17]

Answer:

15.74% of women are between 65.5 inches and 68.5 inches.

Step-by-step explanation:

Problems of normally distributed samples can be 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.

In this problem, we have that:

$\mu = 64, \sigma = 1.5$

What percentage of women are between 65.5 inches and 68.5 inches?

This percentage is the pvalue of Z when X = 68.5 subtracted by the pvalue of Z when X = 65.5.

X = 68.5

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

$Z = \frac{68.5 - 64}{1.5}$

$Z = 3$

$Z = 3$ has a pvalue of 0.9987

X = 65.5

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

$Z = \frac{65.5 - 64}{1.5}$

$Z = 1$

$Z = 1$ has a pvalue of 0.8413

So 0.9987 - 0.8413 = 0.1574 = 15.74% of women are between 65.5 inches and 68.5 inches.

8 0

3 years ago

Find the slope and the y intercept of the line y=3/2x

Blizzard [7]

Answer:

slope / m = 3/2 & y-intercept = (0,0)

Step-by-step explanation:

y=mx+b is the formula

m in this equation is 3/2 (y=3/2x)

there's no b because there's no constant so it's (0,0)

6 0

2 years ago

What is the key difference between simple interest and compound interest, and how does this difference affect the effectiveness

stealth61 [152]

<h2>Answer:</h2>

The simple interest is calculated only on the principal amount of a loan so it is relatively easier to calculate than the compound interest.

The compound interest is calculated on the principle amount plus the interest that the amount gets per compounding period up to the period of the loan. In other words, in compound interest we get, interest on interest.

This difference between the both, is the reason, we get more money in compound interest than simple one.

Let us take an example-

Suppose the principle is = $5000

r = 5% or 0.05

t = 5 years

Simple interest formula is :

$p\times r\times t$

=> $5000\times0.05\times5=1250$

So, total amount after 5 years will become = $5000+1250=6250$ dollars.

-----------------------------------------------------------------------------------------

Lets check for compound interest where the interest is compounded annually.

p = $5000

r = 5% or 0.05

t = 5 years

n = 1

Compound interest formula is :

$A=p(1+\frac{r}{n} )^{nt}$

$A=5000(1+\frac{0.05}{1} )^{5}$

=> $A=5000(1.05)^{5}$

A = $6381.40

--------------------------------------------------------------------------------------------

We can see that we are getting more money in compound interest than the simple interest, for the same amount and same time period.

5 0

3 years ago

Which sequence of transformations creates a similar, but not congruent, triangle? A. Rotation and translation B. Reflection and

Nat2105 [25]

The correct answer is: 
dilation and rotation.

Explanation: 
Rotations, reflections and translations are known as rigid transformations; this means they do not change the size or shape of a figure, they simply move it. These rigid transformations preserve congruence.

Dilation, however, are not rigid transformations, since they change the size of a shape. Dilation would not change the shape, just the size; the angle measures would be the same, and the ratio of corresponding sides would be equal to the scale factor used in the dilation. This would give us a similar, but not congruent, figure.

4 0

3 years ago

Read 2 more answers