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vlada-n [284]
4 years ago
9

Please help! Which of these is true ????

Mathematics
1 answer:
yawa3891 [41]4 years ago
6 0
B is the correct answer. Hope i helped

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10. 2x + 7y = 1<br> 2x - 4y = 12<br> Solve for y
adoni [48]

Answer:

The solution for y = -1.

Step-by-step explanation:

Given:

2x\ +\ 7y\ =\ 1    ....(1)

2x\ -\ 4y\ =\ 12  ....(2)

So, to solve for y, first we solve for x in equation (2):

2x-4y=12

⇒2x=12+4y

Dividing both sides by 2,

⇒x=6+2y            

Now, substituting the value of x  in equation (1):

2x+7y=1

⇒2(6+2y)+7y=1

⇒12+4y+7y=1

⇒12+11y=1

⇒11y=1-12

⇒11y=-11

Dividing both sides by 11,

⇒y=-1

Therefore, the solution for y = -1.

7 0
3 years ago
6x-7y= -2 please help me
Nana76 [90]

Answer:

X=7/6y+-1/3

Step-by-step explanation:

It will be hard for me to demonstrate the equation

6 0
4 years ago
Is 15 to 35 and 27/66 equivalent
Alex777 [14]
The two ratios are not equivalent
3 0
3 years ago
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What is the reciprocal of 3? (As a fraction)
grigory [225]

Answer:

1/3

Step-by-step explanation:

The reciprocal of a number is 1 divided by the number.

The reciprocal of 3 is 1 divided by 3, or simply 1/3.

3 0
3 years ago
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If I have a candy bar divided into 6 equal parts, and I eat 2 of the parts, what fraction of the candy bar did I eat?
Afina-wow [57]

Answer:

2/6 or 1/3

Step-by-step explanation:

Nothing it is just basic mathematics

6 0
3 years ago
Read 2 more answers
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