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Ilya [14]
3 years ago
15

I don't understand please help

Mathematics
1 answer:
kirill [66]3 years ago
5 0

Answer:2x+30 =90

If the angle is 90° altogether

60=A 30=30

Step-by-step explanation:


2x+30 =90

-30 -30

2x=60

÷2. ÷2

x=30

2*30=60

60+30=90

60=A B=30

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Formation of expressions in 1, 2 and 3:

In 1, twelve times f is, 12f

Taking away 5, it becomes (12f-5)

In 2, sum of k and 6 is, (k+6)

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In 3, sum of 5 with x is, (x+5)

Now, x squared minus the above expression indicates (x²-x+5)

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