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Nesterboy [21]
3 years ago
13

" Pentagon ABCDE and pentagon A’B’C’D’E’ are shown on the coordinate plane below.

Mathematics
2 answers:
vampirchik [111]3 years ago
6 0
<span>The answer: b. translated according to the rule (x, y) → (x + 8, y + 2) and reflected across the x-axis

If you make the drawing of the situation you realize the you need a reflection through the x-axis, but first you need to translate the polygon several units to the left and upward.

You can see that all the x-coordinates have increased 8 units, so the solution has to include x + 8.

Also, you see that you have to move the polygon 2 units upward before doing the reflection so the solution has to include y + 2.

So, the answer is (x,y) ---> (x + 8, y + 2) and then reflection across the x-axis.


</span>
lesantik [10]3 years ago
4 0

Answer:

THIS IS THE CORRECT ANSWER (also got it right on LSS reflections)

 b. translated according to the rule (x, y) → (x + 8, y + 2) and reflected across the x-axis

PLEASE READ THE FOLLOWING. VERY IMPORTANT TO GET PROBLEM RIGHT!!!

THE PENTAGON LOCATION IS AT

A prime B prime C prime D prime E prime on the coordinate plane with ordered pairs at A negative 4, 5, at B negative 6, 4, at C negative 5, 1, at D negative 2, 2, at E negative 2, 4, at A prime 4, negative 7, at B prime 2, negative 6, at C prime 3, negative 3, at D prime 6, negative 4, at E prime 6, negative 6.

SUBSTITUTE THOSE COORDINATES INTO YOUR PROBLEM TO MAKE SURE YOU HAVE THE SAME ONE!!! THERE ARE DIFFERENT VERSIONS OF THIS PROBLEM SO BE CAREFUL!! THIS ANSWER IS ONLY FOR THE COORDINATES SHOWN ABOVE!!!

EDUFIRST ANSWER IS CORRECT!

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A yearbook company was investigating whether there is a significant difference between two states in the percents of high school
Keith_Richards [23]

Answer: D. two-sample z-test for a difference in population proportions

Step-by-step explanation:

The options for the given questions were missing. The options are as follows:

A one-sample z-test for a sample proportion

B one-sample z-test for a population proportion

A

C two-sample z-test for a difference in sample proportions

D two-sample z-test for a difference in population proportions

Solution:

Sample proportions are used to estimate population proportions.

We are given the sample proportion of students from one state who ordered a yearbook = 70/150

We are also given the sample proportion of students from the other state who ordered a yearbook = 65/100

Since there are 2 samples and we want to investigate if there is a difference between 2 population of students,

Therefore, the most appropriate method for analyzing the results is

D. two-sample z-test for a difference in population proportions

8 0
3 years ago
What property says that changing the grouping of numbers that are either being added or multiple dose not change the value of it
goldfiish [28.3K]

Answer:

The associative property.

5 0
3 years ago
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Andru [333]
I’m pretty sure the answer is C
3 0
3 years ago
A student solved for the radius of a circle with a circumference of 12π Step 1: C = 2 pi r. Step 2: 12 pi = 2 pi r. Step 3: Star
Greeley [361]

Answer:

The student made a mistake in step 4

The length of the radius should be 6 cm

Step-by-step explanation:

Let us write each step to find the radius of a circle from its circumference

Step 1:

∵ C = 2πr

∵ C = 12π

Step 2:

Equate 12π by 2πr

∴ 12π = 2πr

Step 3:

Divide both sides by 2π

∵ \frac{12\pi }{2\pi }=\frac{2\pi r}{2\pi }

Step 4:

∴ 6 = r

∴ The radius of the circle is 6 cm

The student mad a mistake he divided the left hand side by 2π and the right hand side by 2 only he left π with r

Step 4:

∴ 6 = πr

So he divided both sides again by π

Step 5:

∵ \frac{6}{\pi }=\frac{\pi r}{\pi }

Step 7:

∴ \frac{6}{\pi } = r

The student made a mistake in step 4

The length of the radius should be 6 cm

3 0
3 years ago
Read 2 more answers
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Serhud [2]
The answer would be c
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3 years ago
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