Answer:
P and Q are two points on the line x-y+1=0 and are at a distant of 5 units from the origin. Find the area of triangle POQ.
Step-by-step explanation:
P and Q are the intersection points of
x-y+1 = 0 and the circle x^2 + y^2 = 25
sub y = x+1 into the circle
x^2 + (x+1)^2 = 25
x^2 + x^2 + 2x + 1 - 25 = 0
x^2 + x - 12 = 0
(x+4)(x-3) = 0
x = 3 or x = -4
y = 4 or y = -3
so P(3,4) and Q(-4,3) are our two points
Height of triangle.
h = |0 - 0 + 1|/√2 = 1/√2
PQ = √( (-7)^2 + 1^2) = √50 = 5√2
area POQ = (1/2)(1/√2)(5√2) = 5/2 square units
hope this helped
Answer: cool!
Step-by-step explanation: ;)
Answer:
(40 x 11) +1 .5(11 x 10) = 165
Step-by-step explanation:
Answer:
the slope is -3 and the y inercept is x
Step-by-step explanation:
Answer:
35 cm ^2
Step-by-step explanation:
5x5 = 25
5-3 = 2
5x2 = 10
25+10 = 35cm^2
