Answer:
Step-by-step explanation:
Cosine (cos) is adjacent by hypotenuse.
In any of the 45° angles, 1 is adjacent and √2 is the hypotenuse.
So arrange them to get
1) Move the non-x term to the right
x^2 +6x = -c
2) Divide the equation by the coefficient of x^2
(You don't have to because it is one).
3) Get the "x" coefficient, divide it by 2, square it then add it to both sides:
6 divided by 2 = 3
3^2 = 9
x^2 +6x +9 = -c +9
Take the square root of both sides
(x +3) = sq root (9 -c)
x = -3 + sq root (9 -c)
Answer:
11
Step-by-step explanation:
add 30 then 42 then 18 and divide it in to as many possible
2/5 divided by 4/7 would be 7/10.
Hope this helps!
Answer:should be: 7u-4v/8v
Step-by-step explanation: