Answer:
(23/27, 11/9)
Step-by-step explanation:
Given the simultaneous equation;
-6x+5y=1..... 1
6x+4y=10.... 2
Add both equations
5y + 4y = 1+10
9y = 11
y = 11/9
Substitute y = 11/9 into 1;
From 1;
-6x+5y=1.
-6x + 5(11/9) = 1
-6x + 55/9 = 1
-6x = 1- 55/9
-6x = (9-55)/9
-6x = -46/9
x = -46/-54
x = 23/27
The solution to the system of equation is (23/27, 11/9)
2x-3y=-15
subtract 2x from each side
-3y = -2x-15
divide by -3
y = 2/3 x +5
this is in slope (2/3) intercept (5) form
Answer:
Rational
Step-by-step explanation:
Repeating decimals can be represented as a ratio of two integers.
Answer:
Step-by-step explanation:
Angles a and b are opposite, so they are equal. The same is true for angles O and 3b.
So, the four angles are actually (starting from the left and going clockwise) 3b,b,3b,b
These four angles sum up to 360, so we have

And since a and b were the same, a is also 45 degrees.
Answer:
2.8 or
or 2
Step-by-step explanation:
- Take 0.4 and multiply it by 7
- 0.4*7=2.8