Using substitution method
from the first equ
2x+y=-1
y= -1-2x --------(3)
put equ 3 into equ 2
3x -1-2x=6
3x-2x=6+1
x =7
put x+7 into equ 1
2(7) + y = -1
14 + Y =-1
y= -1-14
y=-15
so
x=7 and y=-15

7 0

3 years ago

Pls answer I give brainliest

mr_godi [17]

The two answers would 4/12 and 9/12. This is because one third of 12 is 3 and three fourths of 12 is 9.

3 0

3 years ago

Jack buys a pair of shoes for $52 and pays $2.60 sales tax. How much sales tax will his friend pay if his friend purchases a shi

gogolik [260]

To answer this you would divide 52 by 2.60 which is 20,
So, 28 / 20 = 1.40,

So the answer is $140 sales tax.

Hope this helps.

6 0

3 years ago

Whats the answer and how do you work it out? 5/12-1/4

Sergio [31]

Answer:

$\frac{5}{12} - \frac{1}{4} \frac{ \times }{ \times } \frac{3}{ 3 } \\ \frac{5}{12} - \frac{3}{12} \\ = \frac{2}{12} = \frac{1}{6}$

4 0

3 years ago

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