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lidiya [134]
3 years ago
14

Point D is the image of D(-2,1) under a reflection across the x-axis. What are the coordinates of D?

Mathematics
1 answer:
vredina [299]3 years ago
5 0

Answer:

(-2,-1)

Step-by-step explanation:

To reflect something across an axis we need to change the coordinate of the other axis.  To reflect a point across the X axis we need to change the sign on  the Y axis because that will put it on the other side of the X axis.  In this question the 1 is what we will change from positive to negative.  By doing this it will move the point from above the X axis to below the X axis.

I hope this helps and please don't hesitate to ask if there is anything still unclear!

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A flying disc has a 5 ⅖ inch radius. What is its approximate circumference, rounded to the nearest inch?
Ivenika [448]
<h2>Circumference of flying disc is 34 inches</h2><h3><u>Solution:</u></h3>

Given that,

Radius = 5\frac{2}{5}\ inches = \frac{27}{5}\ inches

To find: circumference

<h3><u>The circumference of circle is given as:</u></h3>

C = 2 \pi r

Where, r is the radius of disc

Therefore,

C = 2 \times 3.14 \times \frac{27}{5}\\\\C = 6.28 \times 5.4\\\\C = 33.912

C \approx 34

Thus the circumference of flying disc is 34 inches

3 0
4 years ago
If f(x) =7 +4x and g(x) =1/2 what is the value of (f/g)
saw5 [17]

Answer:

10.8

Step-by-step explanation:

To find (f/g)(5), find f(5) and (g5) then divide the values.

f(5) = 7 + 4(5) = 27

g(5) = 1/2 (5) = 2.5

27/2.5 = 10.8

6 0
3 years ago
25/160 into a decimal??
Andrej [43]

Answer:

0.15625

<em>Explanation:</em>

Divide:

<em>25 divided by 160</em>

<em>Which Equals by</em>:

0.15625

Step-by-step explanation:

Hope this Helps!!

7 0
3 years ago
Read 2 more answers
The length of a rectangle is (2x + 4). The width of the rectangle is (x² – 2). What is the
Lorico [155]

A = (2x + 4)(x^2 - 2)

A = 2x(x^2) + 2x(-2) + 4(x^2) + 4(-2)

A = 2x^3 + -4x + 4x^2 + -8

A = 2x^3 + 4x^2 - 4x - 8

Hope this helps!! :)

8 0
4 years ago
Brianna has £20, all in 5p coins, and £50, all in 2p coins.
azamat

Answer:

it is 70

Step-by-step explanation:

u add all of it and 70 will be your answer

7 0
3 years ago
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