Sin 30 = O/H = 1/2
So Sin 30 = 1/2
Make the coefficient of y the same in both equations:
To do this, multiply equation one by 2, and equation two by 5 (this will make the coefficient 10 in both).
14x + 10y = 38
-35x - 10y = -80
Eliminate the y variable by adding the equations from each other
(14x + 10y = 38)
+ (-35x - 10y = -80)
= -21x + 0y = -42
We now have -21x = -42. The y variable has been eliminated.
Solve for x
-21x = -42
Divide both sides by -21 to get x on its own.
x = 2
Substitute x into the equation to find y.
7*2+5y=19
14+5y=19
Subtract 14 from both sides.
5y=19-14
5y=5
Divide by 5 on both sides to get y on its own.
y=5/5
y=1
The answer is (2,1)
Answer:
a) 7
b)1.2
Step-by-step explanation:
10.5÷1.5=7
1.56÷1.3=1.2
The possible values of that number are less than 16
80,000, eighty thousand, 300,000 + 80,000+ 9,000+400+20+2
Hope that helped you!
