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Alik [6]
3 years ago
5

What should be the first step in adding these equation to eliminate y 12x - 2y = -1 + 4x + 6y =-4

Mathematics
1 answer:
barxatty [35]3 years ago
6 0

Answer:

See below

Step-by-step explanation:

<u>Assumed you need to solve the system:</u>

  • 12x - 2y = - 1
  • 4x + 6y = - 4

In order to solve this by elimination, triple the first equation and add the second one.

<u>It will make the coefficients of y same with opposite signs:</u>

  • -6y and 6y

When added together these cancel, leaving x as the only variable.

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Tyrone likes to snack on his big bag of candy. He takes 8 pieces of candy from the bag each time he snacks. After eating 18 snac
Igoryamba

Answer:

c= ur mom

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
-14.9=x/8 -2.1 Please help me answer
Romashka [77]
-14.9 = \frac{x}{8} - 2.1               (Add 2.1 to both sides)
-12.8 = \frac{x}{8}                       (Multiply both sides by 8)
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4 0
3 years ago
On average, a person spends $240 every 3 months on their cellphone bill . What would the price for 1 month. How much would this
Elena L [17]

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$960

Step-by-step explanation:

price of one month = total expense/ number  of month

= 240/3= $80

therefore persons annual expenses = 80*12= $960

3 0
3 years ago
Solve 4ax + 5ax = 3ax + 6 for x. Assume a ≠0
jok3333 [9.3K]

Answer:

c. x = 1/a

Step-by-step explanation:

4ax + 5ax = 3ax + 6

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6ax = 6 (subtraction property of equality)

6ax/6 = 6/6 (division property of equality)

ax/a = 1/a (simplify)

x = 1/a

7 0
3 years ago
Please this is my last point I really need help <br> Show workings
Lisa [10]

Answer:

x = 14.375

Step-by-step explanation:

Ok, so we know that a triangle has a total interior degree of 180°. And since we already have a 95° angle, we just need to subtract 95 from 180.

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Now that we know each side is 42.5 degrees, we just need to grab our given equation and put and equal sign at the end with what we already know is the answer (since we are trying to solve for <em>x</em>).

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Now, let's just get rid of those useless parentheses.

4x - 15 = 42.5

Next, we just need to have the variable on its own side, all by itself. So, in order to do that, we just add 15 to both sides.

4x = 57.5

Now, for our final step, we just need to divide each side by our variables' factor (which is a positive 4). In which we get our final answer of:

x = 14.375

4 0
3 years ago
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