What is the other angle?

Mathematics

1 answer:

gregori [183]3 years ago

3 0

The three answers you have are correct. The last fourth answer is coincidentally "angle 4". If another number other than '4' was in the diagram, then you would label it as angle X (replace X with that number in question).

note: you can say "angle 4" or you can use the angle markers as you have been doing. It's probably best to stay consistent.

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3x + 5y = 7 How to solve it

Lubov Fominskaja [6]

Answer:

x=1 and y=4/5

Step-by-step explanation:

Given system of equations

3x+5y=7

5x+10y=13

Multiply first equation by 2

2(3x+5y)=2(7)

6x+10y=14

Eliminate y-variable to get "x"

6x+10y=14

- 5x+10y=13

x = 1

Substitute x=1 into either equation and find "y"

3x+5y=7

3(1)+5y=7

3+5y=7

5y=4

y=4/5

Therefore, x=1 and y=4/5

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