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Liula [17]
3 years ago
9

An un known or changeable quantity is known as (an)???

Mathematics
1 answer:
Jobisdone [24]3 years ago
7 0
Its called a variable
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NEED HELP ASAP
miv72 [106K]

Answer:

x=55

Step-by-step explanation:

The angles are corresponding angles and corresponding angles are equal

3x-60 = x+50

Subtract x from each side

3x-60-x = x+50-x

2x-60 =50

Add 60 to each side

2x-60+60=50+60

2x=110

Divide by 2

2x/2 =100/2

x =55

8 0
3 years ago
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Solve u^2 = -4, where u is a real number. Simplify your answer as much as possible.
alexdok [17]

Answer:

2i and -2i

Step-by-step explanation:

I'll change u to x to be easier to understand.

x^2 = -4

sqrt(x^2) = sqrt(-4)

sqrt(-4) = 2i, or -2i

8 0
2 years ago
A square has an area of 100 square meters.<br> What is the perimeter of the square?
LiRa [457]

Answer:

40 square meters

Step-by-step explanation:

Perimeter means to add up all sides.

area means one side times one side

10 times 10 makes 100 so i am guessing each side is 10

10 + 10 + 10 + 10 = 40

5 0
3 years ago
Is 5.692 a terminating or a repeating decimal
Ostrovityanka [42]
5.692 is a terminating decimal because the decimal stopped at the digit of 2.

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