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kvv77 [185]
4 years ago
14

The sum of 2 time a number and -7, added to 5 times the number

Mathematics
1 answer:
DIA [1.3K]4 years ago
4 0

Answer:

7x - 7

Step-by-step explanation:

Variable: X = the unknown number

2x + (-7) + 5x

= 7x - 7

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5+5=10 and 10-7.75 is 2.25 so he would get back $2.25 as change
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4 years ago
Part A Predict what will happen to the coordinates of a point (x, y) as the point reflects across a line to produce point (x', y
mylen [45]

The list attached shows the coordinate of (x, y) after transformation when reflecting over x, y-axis, and lines y = x, y = -x

<h3>What is geometric transformation?</h3>

It is defined as the change in coordinates and the shape of the geometrical body. It is also referred to as a two-dimensional transformation. In the geometric transformation, changes in the geometry can be possible by rotation, translation, reflection, and glide translation.

We have two lines of reflection:

y = x and

y = -x

The point is (x, y)

After reflecting over line y = x the coordinate (x, y) becomes:

(y, x)

After reflecting over the line y = -x the coordinate (x, y) becomes:

(-y, -x)

Thus, the list attached shows the coordinate of (x, y) after transformation when reflecting over x, y-axis, and lines y = x, y = -x

Learn more about the geometric transformation here:

brainly.com/question/16156895

#SPJ1

7 0
2 years ago
Which if the following is a factor for number 9 <br><br> 2(x+9) (x-9)
qwelly [4]

From 2x^2 - 162,

factors would include 2(x+9)(x-9), in which x = 9,-9

5 0
3 years ago
Find the surface area of the pyramid.
Taya2010 [7]
460 cm squared
Hope that helped XD
7 0
3 years ago
Keith bought a bottled water for 4 dollars and 7 power bars. He spent a total of $32.00. What was the cost of a power bar?
Sunny_sXe [5.5K]

Answer:

32.00 - 4.00 = $28

Step-by-step explanation:

32.00 - 4.00 = 28.00

7 0
3 years ago
Read 2 more answers
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