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NemiM [27]
3 years ago
12

Solve the following system using the substitution method. Show all work! 4x+y=14 x-2y=8

Mathematics
2 answers:
Serjik [45]3 years ago
6 0

Answer:

Step-by-step explanation:

4x+y=14

x-2y=8

then;

x=8-2y

substitute;

4(8-2y)+8-2y=14

32-8y+8-2y=14

40-10y=14

26=10y

y=2.6 , work out 4x+2.6=14 to get x

kkurt [141]3 years ago
6 0

Answer:

y=-2

x=4

Step-by-step explanation:

add 2y to both sides of equation 2

x-2y=8

x=8+2y

now that we have determined that x equals 2y, we can use it to substitute it in the first equation

4x+y=14

4(8+2y)+y=14

multiply 4 times the numbers in the parentheses

4(8+2y)+y=14

32+8y+y=14

isolate variables by subtracting 32 from both sides

32+8y+y=14

8y+y=-18

combine like terms

8y+y=-18

9y=-18

solve by dividing both sides by 9

9y=-18

y=-2

now that we know that y=-2, lets substitute it to solve for x

4x+y=14

4x-2=14

add 2 to both sides

4x-2=14

4x=16

divide both sides by 4

4x=16

x=4

If this was helpful please leave a thanks or give brainliest :)

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Answer: 43 squared units

Explanation:

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Find x:<br><br><br><br><br> explain if you can!
Sergio039 [100]

Answer:

x is 97

Step-by-step explanation:

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Adding them to the coordinates of a,
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Suppose

S=50+51+52+\cdots+100+101

At the same time, we can write

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Note that S=S^* (just reverse the sum). Let's pair the first terms of S and S^*, and the second, and the third, and so on:

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Now, each grouped term in the sum on the right side adds to 151. There are 52 grouped terms on that same side (because there are 50 numbers in the range of integers 51-100, plus 50 and 101), which menas

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