Answer:
See Explanation Below
Step-by-step explanation:
Given

Required
Prove
To start with; we open the bracket on the left hand side




Reorder

From trigonometry;

So;

becomes

Also from trigonometry;

So,

becomes

Proved
Answer:
x= 361
Step-by-step explanation:
Slope intercept form is: y = mx + b
Isolate the y. First subtract 10x from both sides
10x (-10x) + 2y = 8 (-10x)
2y = -10x + 8
Isolate the y. Divide 2 from both sides and <em>all</em> terms.
(2y)/2 = (-10x + 8)/2
y = -5x + 4
y = -5x + 4 is your slope intercept form answer.
hope this helps
Well,
we know that we need to accumulate points from x and y to reach 20 points.
since x provide 3 and y provide 4 points, the formula would be :
3x + 4y = 20
or it can be written as :
y = (3x/4)+5
hope this helps