Answer:
Step-by-step explanation:
Using cosine (since that is adjacent over hypotenuse), cos(60)=1/2 so your answer is hypotenuse*1/2=
8 2/3 - 7 3/4= X
8 ?/12- 7 ?/12=X
8 8/12- 7 9/12
104/12- 93/12
104/12-93/12=11/12
7 3/4+11/12=8 2/3
X=11/12
Answer:
B
Step-by-step explanation:
not completely sure that's right sorry if its Wong
Answer:
x=5 twice
Step-by-step explanation:
x^2-10x+25=0
multiply the coefficient of x^2 and the last term
1X25=25
find two numbers you can multiply to get 25 and add to get -10
-5 + (-5)=-10 the middle term
replace -10x with -5x -5x and solve the equation
x^2-5x-5x+25=0
factorise by grouping
x(x-5)-5(x-5)=0
(x-5)(x-5)=0
Either x-5=0,x=5 or x-5=0,x=5
Therefore x=5 twice.