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svetlana [45]
3 years ago
13

Using elimination method, what will be the value of y after solving -x - y = 5 and -x + 4y = 15?

Mathematics
1 answer:
natka813 [3]3 years ago
4 0

9514 1404 393

Answer:

  y = 2

Step-by-step explanation:

The variable x can be eliminated by subtracting the first equation from the second.

  (-x +4y) -(-x -y) = (15) -(5)

  5y = 10 . . . . . . . simplify

  y = 2 . . . . . . . . . divide by 5

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Which is the largest fraction? 3/4, 2/3, 4/6, 8/12
zheka24 [161]

Answer:

3/4

Step-by-step explanation:

First you have to find equivalent fractions.

We can use twelve for this number. 3/4 = 9/12       2/3 = 8/12     4/6=8/12 and of course 8/12=8/12. So we can say that 3/4 is the largest fraction of the bunch.

8 0
3 years ago
Factor the trinomial or state that the trinomial is prime 3a^2 -10a-32
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Answer: (a+2)(3a-16)

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3 years ago
Find the square root of the following using division method . iv) 36360
sveticcg [70]

Answer:

190.684

Step-by-step explanation:

To find the square root of 36360, we place a bar over the numbers that we want to find their square root in pairs

    ,    1       \dot{3} \overline{63}  \overline{60}

       , 1       1

2,       <u>9</u>      2  \overline{63}

         9      261  

38,      <u>0</u>            2 60

          0            0

         .    

380,    6            26000

        ,  6           22800

3806,  8          320000

         ,  8          304480

38068, 4       1552000

           ,4

Which gives 190.684

3             63 60

We select the divisor to be the largest number which when squares will be equal to the largest number on the left which is 1

We have 1 * 1 = 1

We subtract it from the 3 to get 2

We add the 1's to get 2

We bring down the next pair which is 63 to form the next dividend, 263

We look for a number which will multiply itself to get 263, which is 9, we then have 29 × 9 = 261

We continue till we arrive at the vertical paired numbers which is 190.684.

7 0
3 years ago
Please, someone help me. 3/4x-7=8
Cloud [144]

Answer:

x= 20

Step-by-step explanation:


6 0
3 years ago
Read 2 more answers
-17x + 2 +3x^2 + 2x^3 divided by x-2
Stells [14]

Answer:

2x^2+7x-3

remainder is -4

Step-by-step explanation:

Check the image

6 0
3 years ago
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