∠BDC=30, so ∠CBD + ∠BCD=180-30=150
ΔDBC is isosceles, so ∠CBD=∠BCD=half of 150=75
∠ABC=∠ABD-∠CBD=155-75=80
ΔABC is isosceles, so ∠ABC=∠ACB=80
∠BAC=180-80-80=20
Answer:
45%
Step-by-step explanation:
900/2000 x 100% = 45%
Hope this helps :)
Answer: Spain, France, Britain
Step-by-step explanation:
The rule about dividing is that you have to flip the divisor, so that gives us 4x+1/6x * 3x-1/x
Now we just multiply the numerator by the numerator and the denominator by the denominator.
Let’s multiply the numerators first,
(4x+1)*(3x-1)
Use distributive property,
12x^2-4x+3x-1
Collect the terms and simplify,
12x^2-x-1
We can already tell that our answer is A, but let’s solve the denominators just to check.
6x*x
6x^2
We are left with 12x^2-x-1/6x^2
So your final answer is A
