I will mark brainliest to those who help please!

Mathematics

1 answer:

mixer [17]2 years ago

4 0

Answer:

B. Reflect PQR across a horizontal line through R, and then translate the image so R aligns with Z.

Step-by-step explanation:

Imagine a horizontal line through point R. Once you reflect the triangle across this line, it will be facing the same direction as triangle XYZ. Then, once you align R with Z (they are corresponding points!) the triangles will be directly on top of each other.

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Name the property used in: (5 + 2) + n = 7 + n

rjkz [21]

Additive indentity
$(5 + 2) + n$
n = 1
a variable is always a number itself remember 7+n
5+2 = 7

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3 years ago

Simplify each expression 1.) (7+x) + 7x Pls show your work

Papessa [141]

The answer is 14x.

You always have to do whats in the parenthesis first. In this case you would do 7 + x = 7x. Then, you add this 7x to the other 7 x. 7x+7x=14x.

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2 years ago

Write an equation or system of equations to solve the problem below.

VashaNatasha [74]

Equations:

2x+105=-3x+130

subtract 2x from both sides 

105= -5x+130

Subtract 130 from both sides

-5x= -25

isolate the variable

x=5 

Plug back in

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2 years ago