MATHEMATICS HIGH SCHOOL

Alg 1Given the data set for the length of time a person has been jogging and the person's speed, hypothesize a relationship between the variables.

a. I would expect the data to be positively correlated.

b. I would expect the data to be negatively correlated.

c. I would expect no correlation.

d. There is not enough information to determine correlation.

Answers

Answer 1
Answer: a)true
B)false
c)false
D)true

they are right
Answer 2
Answer:

Answer:

b. I would expect the data to be negatively correlated.

Step-by-step explanation:

This is because the correlation is an inverse. That means that the longer you jog the less time it should take you to do it.

I know that the answer is not A because I took the test and A was incorrect.

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Help please!!A candle burns down at the rate of 0.5 inches per hour. The original height of the candle was 8 inches.Part A: Write a list of 6 ordered pairs to show the height of the candle in inches (y) as a function of time in hours (x) from the first hour after it started burning. For example, the point (0, 8) would represent a height of 8 inches after 0 hours. Explain how you obtained the ordered pairs. (5 points)Part B: Is this relation a function? Justify your answer using the list of ordered pairs you created in Part A. (2 points)Part C: If the rate at which the candle burned was 0.4 inches per hour instead of 0.5 inches per hour, would the relation be a function? Explain your answer using input and output values. (3 points)
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AB passes through A(-3, 0) and B(-6, 5). What is the equation of the line that passes through the origin and is parallel to AB ?A.
5x − 3y = 0
B.
-x + 3y = 0
C.
-5x − 3y = 0
D.
3x + 5y = 0
E.
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Answers

Answer:

3y + 5x = 0

Step-by-step explanation:

The slope of the line = (y2-y1) / (x2-x1) = (5-0)/(-6-(-3))

= 5 / -3 = -5/3

Using the point-slope form , the line that passes through the origin and parallel to this line is

y - 0 = -5/3(x - 0)

y = -5/3 x

Multiply through by 3:-

3y = -5x

5x + 3y = 0

Can you please help my brother !!!!!!

Answers

Answer:

5/4 = 5/8 times 2

1

2

4

5

7

16/5 = 8 times 2/5

9 and 8 the last two

Step-by-step explanation:

The manager of a warehouse would like to know how many errors are made when a product’s serial number is read by a bar-code reader. Six samples are collected of the number of scanning errors: 36, 14, 21, 39, 11, and 2 errors, per 1,000 scans each. What is the mean and standard deviation for these six samples?

Answers

Answer:

Mean=20.5

standard deviation=13.28

Step-by-step explanation:

We are given six samples i.e.

36, 14, 21, 39, 11, and 2

Mean is the average of all the samples

Mean= sum of all samples/no. of samples

Mean=(36+14+21+39+11+2)/6

Mean=20.5

Standard deviation is the positive square root of variance where

variance= sum of square of samples/number of samples-(mean)²

variance=(36²+14²+21²+39²+11²+2²)/6-(20.5)²

            = 596.5-420.25

            =   176.25

standard deviation= √(176.25)

standard deviation= 13.28

After paying eight dollars for the pie, Mike has eighty - one dollars left, his friend has thirteen dollars. How much money did he have before buying the pie

Answers

Answer:

__ - 8=81

unsure if we're adding his friend but for this i assume no,

81+ 8 = 89

so its either 89 or

89+13=102

Which expression represents 100 divided by an unknown number?A.
100 • p

B.
100 ÷ p

C.
100 – p

D.
100 + p

Answers

The expression that represents that 100 is divided by an unknown number is letter B. Being, 100 ÷ p. The letter p is being represented by the unknown number. Sometimes, the unknown number could use different variables, such as x,y, z and etc.

Answer:

it is b

Step-by-step explanation:

Two acute triangles are similar. Which of the following must the similar triangle have?A) every pair of sides and angles congruent
B) at least one pair of congruent sides and one pair of congruent angles
C) congruent corresponding angles and proportional side lengths
D) a right angle and a hypotenuse

Answers

Answer:

The correct answer is C). congruent corresponding angles and proportional side lengths

Step-by-step explanation:

Similar Triangles : The two triangles are said to be similar to each other if their all corresponding angles are congruent to each other and the corresponding sides are proportional to each other.

Now, Given that two acute triangles are similar.

So, By using the definition of similarity of two triangles

We can conclude that :

All the corresponding angles of the acute triangles will be congruent to each other.

Also, The sides of both the acute triangles will be proportional to each other.

Therefore, The correct answer is C). congruent corresponding angles and proportional side lengths
B is the only one that makes sense if you break them each down. An Acute doesnt have every Pair of angles congruent, the don't have to have proportional side lengths, and it can't have a right angle or it would be a right triangle.
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