Answer:
y= 77
Step-by-step explanation:
<em>Write down the equation for direct proportion.</em>
y= kx, where k is a constant.
<em>Find the value of k.</em>
When x= 12, y= 84,
84= k(12)
12k= 84
k= 84 ÷12
k= 7
<em>Substitute</em><em> </em><em>the</em><em> </em><em>value</em><em> </em><em>of</em><em> </em><em>k</em><em> </em><em>into</em><em> </em><em>the</em><em> </em><em>equation</em><em>.</em>
y= 7x
When x=11,
y= 7(11)
y= 77
Answer:
C!!!!
Step-by-step explanation:
(3/15)x=12/15
x = 4
I would take a brainliest, but its your choice
a. Let us say that c(x) is the cost of one t shirt based
on the number of increases therefore:
c = 10 + x
b. Say that t(x) is the number of t shirts sold based on
the number of increases so:
t = 2500 – 100 x
b. The revenue is simply the product:
r(x) = (10 + x) (2500 – 100 x)
Combining:
r(x) = 25000 – 1000 x + 2500 x – 100 x^2
r(x) = 25000 + 1500 x – 100 x^2
Taking the 1st derivative and setting dr / dx
= 0 to get the maxima:
dr / dx = 1500 – 200 x
1500 = 200 x
x = 7.5
t = 2500 – 100 x = 2500 – 100 (7.5) = 1750
Hence 1750 shirts should be sold.
<span> </span>
38/1000
This is because the 0.0 is in the tenths place, 0.03 is in the hundredths place, and 0.038 is in the thousandths place.