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BaLLatris [955]
3 years ago
11

What is the image of (-7, -9) after a reflection over the x-axis?

Mathematics
2 answers:
miss Akunina [59]3 years ago
4 0

Answer:

(-7,9)

Step-by-step explanation:

When you flip over the x-axis, the y-value changes its sign. Vice versa.

Veseljchak [2.6K]3 years ago
3 0

\huge\boxed{\boxed{\bold{(-7, 9)}}}

\hrulefill

To reflect a point across the x-axis, multiply or divide its y coordinate by -1:

P'=(-7, -9*-1)

Multiply:

P'=\large\boxed{(-7, 9)}

<em>An image is attached showing the original point (</em>P<em>) and its image (</em>P'<em>).</em>

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12. Find the distance between points P(-1, 2) and Q(-3, 4).​
marusya05 [52]

Answer:

D=2.82

Step-by-step explanation:

Here we are given with two coordinates and asked to determine the distance between them.

Here we are going to use the distance formula, which is given as under

D=\sqrt{(y_2-y_1)^2+(x_2-x_1)^2}

Where

(x_1,y_1) = (-1,2)

(x_2,y_2) = (-3,4)

Replacing these values in the distance formula

D =\sqrt{(-1-(-3))^2+(2-4)^2}

D =\sqrt{(-1+3)^2+(-2)^2}

D =\sqrt{(2)^2+4}

D =\sqrt{4+4}

D =\sqrt{8}

D= 2.8284

Hence the Distance is 2.82 units

3 0
3 years ago
The sum of 2 numbers is 100. Twice the first number plus twice the second number is 200. What are the numbers?
dlinn [17]

Answer:

50+50=100

100+100=200

Step-by-step explanation:

The sum of 2 numbers is 100. 50 x 2 = 100

Twice the first number plus twice the second number is 200.

50+50=100 so therfore 100+100 makes 200

6 0
3 years ago
Read 2 more answers
Point Q' is the image of Q(5, -3) after a translation down 2 units and right 4 units. What are the coordinates of Q'?
ra1l [238]

Answer:

A. (9,-5)

Step-by-step explanation:

Translation down is -2 to the y coordinate, which is (5,-5). Then you translate it right 4 units, which is +4 to the x coordinate, so the final coordinate is (9,-5).

5 0
3 years ago
The local newspaper has letters to the editor from 10 people. If this number represents ​%5 of all of the​ newspaper's readers,
Margarita [4]
Answer:
I think it is 200
4 0
3 years ago
After arranging the terms in descending powers of a variable, select the opposite of the polynomial.
kondaur [170]

Answer: -4n3+12n2+7n-9

Step-by-step explanation: it basically the opposite sign (positive or negative) switched, and the order backwards. hope that helped

6 0
3 years ago
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