ANSWER:
f(x)⁻¹ = (x+10)/2
WORKING OUT:
f(x) = 2x - 10
y = 2x - 10
*Replace all 'y' values with 'x' and vice versa*
x = 2y - 10
*Make y the subject of the equation*
2y = x+10
y = (x+10)/2
The range = highest value - lowest = 86 - 13 = 73.
arrange in order:-
13 42 45 46 47 74 86
median = 46
First quartile = (42 + 45) / 2 = 43.5
third quartile = (74 - 47) / 2 = 60.5
Answer:
6 1/6
Step-by-step explanation:
(a + 2bc)/(3a)
Plug in the values.
(4 + 2(-5)(-7))/(3(4))
Evaluate.
(4 + 70)/12
74/12
37/6 = 6 1/6
Answer:
The first one is false - see below.
Step-by-step explanation:
The diagonals of the square are also diameters of the circle - True.
The diagonals of the square intersect at the centre of the circle - True.
The diagonals form 4 congruent arcs - True.
Answer:
210 candy bars
85 gum
Step-by-step explanation:
$200=0.75cb+0.50gum
cb+gum=295
gum=295-cb
substitute
$200=0.75cb+0.50(295-cb)
$200=0.75cb+147.5-0.50cb
$200=0.25cb+147.5
0.25cb=52.5
cb=210
gum=295-210=85
