If she have 12 pencils and she gave 3/4 away then she will have 3 pencils left.
Answer:
Step-by-step explanation:

Multiply the equation by 4

5x - 2 + 2 = 2*(3y + 2)
5x +0 = 2*3y + 2*2
5x = 6y + 4
5x - 6y = 4 --------------------(I)

Multiply the equation by 6

2*(7y + 3) = 3x + 2*7
14y + 6 = 3x + 14
14y = 3x + 14 - 6
14y = 3x + 8
-3x + 14y = 8 ------------------------(II)
Multiply equation (I) by 3 and equation (II) by 5 and then add
(I)*3 15x - 18y = 12
(II)*5 <u>-15x + 70y = 40</u> {Now add}
52y = 52
y = 52/52
y = 1
Substitute y =1 in equation (I)
5x - 6*1 = 4
5x - 6 = 4
5x = 4 +6
5x = 10
x = 10/5
x = 2
I think it’s (-5,4) i hope this helps!
Answer
just reverse it. if you already have the long side plug it into the equation a2+b2=c2. and instead of adding youd subtract
Step-by-step explanation:
Answer:
3√141.
Step-by-step explanation:
We can use the Pythagorean theorem to solve this. Since we know the Hypoteneus and one-side length, we can do:
37²= 10²+x²
Now, find the values of the squares:
1369= 100+x²
1269= x²
We can eliminate the last two answers. Now, we can test between the first and the second choice.
27²≠1269.
Therefore, we get 3√141 as our final answer.
Check this by doing:
√141·9 which gives us √1269.