Answer:
x = 5±2√7
Step-by-step explanation:
This quadratic cannot be factorised via the factorisation method, so we use the quadratic formula :
x =
or x =
(The reason I did 2 equations is because brainliest does not allow me to do the ± in the equation insert thing )
x =
or x =
x =
or x= 
x =
or x = 
x =
or x =
Hope this helped and brainliest please
Last one okay bye have a nice day
Answer:
Step-by-step explanation:
This is a sequence of adding 4
So the next number is 47 51
Answer: y = 5
Step-by-step explanation:
This triangle is isosceles.
So, ∠ABC = ∠ACB = 75°
Now,
sum of interior angles of a triangle = 180°
∠ABC + ∠ACB + ∠BAC = 180°
75° + 75° + (4y + 10)° = 180°
160° + 4y° = 180°
4y° = 20°
y = 5
1/2 or 1 whole that's the answer