Answer:
$3
Step-by-step explanation:
4 / 12 = 3
Y=2.5x+30 - the function where y = the total cost and x = the # of notebooks.
40 = 2.5x + 30 - Plug 40 into y and solve
10= 2.5x
x = 4, the number of notebooks she bought
<h3>
Answer:</h3>
A. y = (-6/5)x +10
<h3>
Step-by-step explanation:</h3>
The given line has a negative slope (downward to the right). The only equation offered with a negative slope is the one of selection A.
_____
<em>Complete working</em>
A parallel line will have the same slope. If there are less-obvious choices to select from, you need to know the slope of the given line. That is computed from ...
... slope = (change in y)/(change in x)
The coordinates of two points are given, so we can find the slope as ...
... slope = (-4-2)/(-1-(-6)) = -6/5
There are a number of ways to write the equation of a line, but in slope-intercept form, the slope is the coefficient of x. You will be looking for a choice that has an x-coefficient of -6/5.
1/32 ; 1/8 ; 1/2 ; 2 ; 8 ; ....
An = 2^2n-7
Pls. see attachment for the graph.
9514 1404 393
Answer:
S = 4.5π ≈ 14.14 units
Step-by-step explanation:
The arc length is given by ...
s = rθ . . . . . r = radius; θ = central angle in radians
The angle 135° is ...
135° = 135°(π/180°) = 3π/4 radians
The arc of interest has length ...
s = 6×3π/4 = 9/2π ≈ 14.14 . . . units
