Answer:
sin45×20
Step-by-step explanation:
Remember sin of an angle is the opposite side divided by the hypothenuse. Or the hyp isb20 so the oppside will be sin45 times the hyp
Since both x + 1 and x - 1 are factors of f(x), we have the factorization
x³ + 2ax + b = (x + 1) (x - 1) (x - b)
where the last root must be x = b in order that b is the constant term in the cubic.
Expanding the right side and equating coefficients gives
x³ + 2ax + b = x³ - bx² - x + b
which tells us
-b = 0 ⇒ b = 0
2a = -1 ⇒ a = -1/2
Then we have
f(x) = x³ + 2 (-1/2) x + b = x³ - x
or
f(x) = x (x + 1) (x - 1)
Answer: x = 1/2, y = 4
Step-by-Step Explanation:
Lets solve it using Substitution Method :-
=> 2x + 3y = 13 (Eq. 1)
=> 4x - y = - 2 (Eq. 2)
From Eq. 2 :-
=> 4x - y = - 2
= - y = - 2 - 4x
=> y = 4x + 2 (Eq. 3)
Substitute value of ‘y’ in Eq. 1 :-
=> 2x + 3y = 13
= 2x + 3(4x + 2) = 13
= 2x + 12x + 6 = 13
= 14x = 13 - 6 = 7
=> x = 7/14 = 1/2
Substitute value of ‘x’ in Eq. 3 :-
=> y = 4x + 2
= y = 4(1/2) + 2
= y = 4/2 + 2
=> y = 2 + 2 = 4
Therefore; x = 1/2, y = 4
(72% + 89%) divided by 2 (the number of total grades)
Answer:1/3
Step-by-step explanation:
3 (amount of reds)
------------------------
3+2+4 (sum of all marbles red+Blue+Yellow)
simplfy
3 /3
---- =1/3
9 /3