It would cost him $424.50
Explanation:
Let h = # of hours and y = # of life jackets
Cost = 25 + 5.50h + 6y
Cost = 25 + 5.50 (3) + 6(2)
Cost = $424.50
Answer:
1/sqrt10
Step-by-step explanation:
1) Find out cosA using formula (cosA)^2+(sinA)^2=1
The module of cosA= sqrt (1- (-3/5)^2)= sqrt 16/25=4/5
So cosA=-4/5 or cosA=4/5.
Due to the condition 270degrees< A<360 degrees, 0<cosA<1 that's why cosA=4/5.
2) Find sinA/2 using a formula cosA= 1-2sinA/2*sinA/2 where cosA=4/5.
(sinA/2)^2= 0.1
sinA= sqrt 0.1= 1/ sqrt10 or sinA= - sqrt 0.1= -1/sqrt10
But 270°< A< 360°, then 270/2°<A/2<360/2°
135°<A/2<180°, so sinA/2 must be positive and the only correct answer is
sin A/2= 1/sqrt10
Part A: What is the solution to the pair of equations represented by p(x) and f(x)? (3 points)
(3,1)
Part B: Write any two solutions for f(x). (3 points)
(0,-5) (1, -3)
Part C: What is the solution to the equation p(x) = g(x)? Justify your answer. (4 points)
(1,3)
because they intersect at that point
(-2,0) is your answer:)))
The 2nd one. The one that says CD=DA, DA=ZX, AC=YZ
