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sashaice [31]
3 years ago
12

What is the justification for step 2 in the solution process?

Mathematics
1 answer:
igomit [66]3 years ago
3 0

Answer:

y = 11

Step-by-step explanation:

Solve for y

12y - 40 - 4y = 6y - 18

8y -40 = 6y - 18

8y - 6y - 40 = -18

2y - 40 = -18 ( the justification for step 2 is to isolate y on one side of the                   equation in order to solve for y )

2y - 40 + 40 = 40 - 18

2y = 22

2y/2 = 22/2

y = 11

Check :

12(11) - 40 - 4(11) = 6 (11) - 18

132 - 40 - 44 = 66 - 18

48= 48

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Determine whether (8,5 a solution of the equation y=15x-14)
Nonamiya [84]

Answer:

no, It isnt

Step-by-step explanation:

5 0
3 years ago
Simplify y-2/3/y+1/5
liberstina [14]

Answer:

\frac{15y-10}{15y-3}

Step-by-step explanation:

First at all, we need to use a=\frac{a}{1} to convert this expression into a fraction, like:

y-\frac{2}{3} to convert into \frac{y}{1} -\frac{2}{3}.

Expand the fraction to get the least common denominator, like

\frac{3y}{3*1}-\frac{2}{3}

Write all numerators above the common denominator, like this:

\frac{3y-2}{3}

The bottom one used the same way to became simplest form, like this:

y+\frac{1}{5}

\frac{y}{1} +\frac{1}{5}

\frac{5y}{5*1}+\frac{1}{5}

\frac{5y+1}{5}

And it became like this:

\frac{3y-2}{3}/\frac{5y+1}{5}

Now, we are going to simplify this complex fraction. We can use cross- multiply method to simplify this fraction.

\frac{3y-2}{3}*\frac{5y+1}{5}

3y-2(5) and 5y-1(3)

and it will becomes like this in function form:

\frac{3y-2(5)}{5y+1(3)}

Then, we should distribute 5 through the parenthesis

\frac{15y-10}{5y+1(3)}

\frac{15y-10}{15y+3}

And.... Here we go. That is the answer.

7 0
3 years ago
Which equation represents the problem?
kirza4 [7]
Well you would divide 27 divided by 5 equals 5.4.
Hoped i Helped!
7 0
4 years ago
How much longer can s 3 meters than 3 yards
sergey [27]

0.91 meters = 1 yard

0.91 * 3 = 2.73

3 - 2.73 = 0.27

Your answer is 0.27

Hope this helps you!

4 0
3 years ago
What is the fractional form of 0.8 repeating
Sonja [21]
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0.8 repeating is 8/9

if there was 2 numbers repeating (.232323), u would put it over 99....23/99
if there was 3 numbers repeating (.234234234), u would put it over 999...234/999
8 0
4 years ago
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