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3 years ago

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

Mathematics

2 answers:

stiv31 [10]3 years ago

3 0

Step-by-step explanation:

$3x+9-7x=x+10+x\\-4x+9=2x+10\\-6x+9=10\\$

In the line 2, only variables were operated with a reduction of similar terms in each side of the equation, giving as result -4x at one side, and 2x at the other side.
In the line 3, terms with variables were joined together in one side of the equation, and then, they were operate it, given as result -6X.

brilliants [131]3 years ago

3 0

Answer:

the subtraction property of equality

Step-by-step explanation:

up up up uppity

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one of the angles of a right triangle measures 26 degrees. what are the degree measures of the other two angles?

vfiekz [6]

Answer:

64 degrees

Step-by-step explanation:

The right angle must be 90 degrees

The total degrees of a triangle must be 180

90+26=116

180-116=64

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3 years ago

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padilas [110]

Answer:

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Step-by-step explanation:

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4 years ago

What is halfway between 1/3 and 1/2

docker41 [41]

First, divide 1 by 3 and 1 by 2.

1 divided by 3 = 0.33333333333

1 divided by 2 = 0.5

Add them up. 0.33333333333 + 0.5 = 0.83333333333.

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4 0

4 years ago

Read 2 more answers

Help please with an explanation ಥ‿ಥ

morpeh [17]

If BD = 12x + 36
And BD = BC +CD = 3 + 1 = 4
BC = (12x + 36)/4 x 3
= 12(x+ 3) /4 x3
= 3(x+3) x 3
= 9x + 27
Likewise,
FE = 12(x + 3) /3 x 1
= 4x + 12

Area = 1/2 x (BC + FE) x DE
= 1/2 x (9x + 27 + 4x + 12)x (x+1)
= 1/2 x (13x + 39) x (x +1)
= 1/2 x 13x2 + 52x + 39

Hope this helps,
Regards,
ArmyCee:)

6 0

3 years ago

Math: Problem-Solving with equations.

ivolga24 [154]

Answer:

2s-10

Step-by-step explanation:

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3 years ago

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