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Volgvan
3 years ago
9

Help please and im writing this since it needs 20 characters

Mathematics
1 answer:
Marat540 [252]3 years ago
5 0

Answer:

65% !

Step-by-step explanation:

Plz mark as brainliest!

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<span>The absolute value of an integer is the numerical valuewithout regard to whether the sign is negative or positive. On a number line it is the distance between the number and zero. Absolute value is also known as magnitude.</span>
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What is the value of the expression 30 − 9 + 3 − (12 ÷ 4)? Options: 18, 20, 21, 24.
Rus_ich [418]

Answer:

21

Step-by-step explanation:

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Which expression is equivalent to (1/4ab)^-2? Assume a is not equal to 0,b is not equal to 0
Pie
The answer would be D. 
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Find the solutions to the system of equations. Select all that apply. Y=x^2-1 y=2x-2
Sliva [168]

Answer:

Option C (1, 0)

Step-by-step explanation:

We have a system with the following equations:

y = x ^ 2-1\\\\y = 2x-2

The first equation is a parabola.

The second equation is a straight line

To solve the system, substitute the second equation in the first and solve for x.

2x-2 = x ^ 2 -1

Simplify

x ^ 2-2x + 1 = 0

You must search for two numbers that when you add them, obtain as a result -2 and multiplying both results in 1.

These numbers are -1 and -1

Therefore

x ^ 2-2x + 1= (x-1)(x-1)\\\\x ^ 2-2x + 1= (x-1)^2=0

Finally the solutions are

x = 1\\y =0

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Answer:

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Step-by-step explanation:

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