The formula for the triangular sequence is Xn=n(n+1)/2
So X25=25(25+1)/2=325
Answer:
(x+7)(x-7)
Step-by-step explanation:
x²-49
=x²-7²
=(x+7)(x-7)
5700×0.8%
=$45.6
the answer is $45.6
5/6 cross multiply by 3/4 = 5/8
Answer:
The answer is 48 ft
Step-by-step explanation:
Step 1:
The garden before the fence is: <u>(refer to graphical representation in attached file)</u>
o = side
b = base
h= hypotenuse
Use Sin (t) formula;
Sin (t) = o/h
Sin (t) = 80/100
Sin (t) = 0.8
Step 2:
The garden was divided in 2 parts and a is the missing length which needed to be found <u>(refer to graphical representation in attached file)</u>
For Small triangle <u>(refer to graphical representation in attached file)</u>;
a = side
c = base
b= hypotenuse
Use Sin (t) formula;
Sin (t) = a/b
0.8 = a/60
A = 0.8x60
A = 48 ft
