Solve for x in 2nd equation
times -1 both sides
x-5=6y
add 5
x=6y+5
sub
5(6y+5)+4y=-26
30y+25+4y=-26
34y+25=-26
minus 25 both sides
34y=-51
divide both sides by 34
y=-3/2
sub back
x=6y+5
x=6(-3/2)+5
x=-18/2+5
x=-9+5
x=-4
(-4,-3/2) is solution
the answer to ur problem will be -7/5
Answer:
1
Step-by-step explanation:
To find f(4), find the point in the graph where x = 4 .
And if you look at the point where x = 4 ; y = 1 .
So the answer is : 1
Answer:

Step-by-step explanation:
22.5 degrees is half of 45 degrees (special angle for which we know exactly the value of all three basic trigonometric functions (sine, cosine, and tangent).
So we start recalling the formula for tangent of a half angle: 
We need just the values of:

and of

to answer the question. Then, we use those values in the original formula for tangent of a half angle:
