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3 years ago

HELP ME PLEASE AND EXPLAIN HOW I AM STILL CONFUSED

Mathematics

2 answers:

Viktor [21]3 years ago

5 0

A (9,-4)

B (-9,4)

If it is across y axis then the x changes to the opposite
If it is across x axis then the y changes to the opposite

Illusion [34]3 years ago

3 0

So basically when you reflect a point think of it as a mirror. So for example (5,3) reflected would be (-5,3) if you were reflecting it across the y axis. So the answer to a is (9,-4) and b is (-9,4)

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A(-3,-2) what is the answer

bagirrra123 [75]

Answer:

X=3 and X=2 eassyyyy

Step-by-step explanation:

have a good day

4 0

3 years ago

A line has an undefined slope and includes the points (n, - 5) and (4,1). What is the value of n?

Shalnov [3]

Answer:

n=4

Step-by-step explanation:

To get an undefined slope, the denominator has to be zero

m= (y2-y1)/ (x2-x1)

This means that x2-x1 = 0

or x2=x1

So 4=n

7 0

4 years ago

What is true of the coefficient of variation?

DedPeter [7]

Answer:

A. The coefficient of variation is best used when comparing two data sets that use the same units of measure.

Step-by-step explanation:

The coefficient of variation (CV), is simply the standard deviation (itself a measure of variance or variation) relative to the mean of a distribution.

The coefficient of variation expresses a random variable’s variability in percentage terms. Therefore it is possible, through the coefficient of variation, to compare the variability of data across different samples, especially if the random variables are recorded in different units of measurement (such as cm, kg and minutes).

A coefficient of variation is always interpreted as a percentage. <u>Mathematical representation is:</u>

$Coefficient\ of\ variation\ = \frac{Standard\ deviation}{Mean}\ \%$

The coefficient of variation is best used when comparing two data sets that use the same units of measure.

Hence, the option (A) is the correct option.

5 0

3 years ago

Sara has 20 sweets.

sdas [7]

17/29 + 6/29 + 4/29
= 27/30
<span>1 - 27/29 = 2/29 = 0.069</span>

4 0

3 years ago

Read 2 more answers

In a coordinate plane, triangle ABC has vertices A(- 4, 5), B(- 4, - 4) , and C(3,-4), . Find the perimeter of triangle ABC to t

4vir4ik [10]

Answer: perimeter of triangle ABC to the nearest tenth = 27.4

Step-by-step explanation: Given that

vertices are

A(- 4, 5), B(- 4, - 4) , and C(3,-4)

Length AB = root( [-4-5]^2 + [-4+4]^2)

Length AB = sqr(9^2) = 9

Length AC = root( [-4-5]^2 + [3+4]^2)

Length AC = sqr( 9^2 + 7^2)

Length AC = sqr(130) = 11.4

Length BC = root( [-4+4]^2 + [3+4]^2)

Length BC = sqr( 7^2) = 7

Perimeter = 9 + 11.4 + 7 = 27.4

7 0

4 years ago