3 years ago

What is the justification for each step taken from line 2 to line 3?

Mathematics

2 answers:

matrenka [14]3 years ago

7 0

2x was subtracted from both sides.

A. Subtraction Property of Equality

ElenaW [278]3 years ago

6 0

the answer is A

hope it helps

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How do I do this problem ?

katrin2010 [14]

Y=13 Because a line equals 180. 180-11=169/13=13
x=8 because 180+22=202-4=198/11=18

3 0

3 years ago

If y varies jointly as x and the cube of z and y=16 when x=4 and z=2 then y=0.5 when x=-8 and z=-3?

Evgesh-ka [11]

Answer: F (False)

Step-by-step explanation:

Jointly variation has the following form:

y=kxz

Where k is a constant of propotionality.

Substitute values:

If y=16, x=4 and z=2, then k is:

$16=k(4)(2)^{3}\\k=1/2$

If x=-8 and z=-3 the the value of y is:

$y=(1/2)(-8)(-3)^{3}\\y=-108$

Then the answer is FALSE.

8 0

3 years ago

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Which of the following correctly uses the additive inverse property

Vladimir [108]

What are the choices can’t help if there’s so choices to choose from

7 0

2 years ago

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What number plus 2 less than 3 times the number equals 14

Afina-wow [57]

Obviously this will be a negative number

-2 - 14 = 5x - 3x

-16 = 2x

x = %28-16%29%2F2

x = -8 is the number

Check solution in the original statement: x=-8

3(-8) - 2 = 5(-8) + 14

-24 - 2 = -40 + 14

-26 = -26

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3 years ago

There is a pair of x and y values that make each equation true in this system of equations

MAXImum [283]

Given Equations

5x+3y=8--(1)
4x+7y=34--(2)

Let it has solution (x,y)

Add both

$\\ \sf\longmapsto 5x+4x+3y+7y=8+34$

$\\ \sf\longmapsto 9x+10y=42$

It will also have same solution (x,y)

5 0

2 years ago