Answer:
338
Step-by-step explanation:
because it right and i said so
Answer:
Step-by-step explanation:
There are three right-angled triangles and two of them have x in their dimensions:
The largest one with one side at 48+x and another at 10
The smallest one with one side at x and another at 10
Those 2 right-angled triangles are similar because of AAA - both have a right-angle and share a common angle.
So their sides are in the same ratio:
x / 10 = 10 / (48+x)
x*(48+x) = 10*10
x^2 + 48x - 100 = 0
(x+50)*(x-2) = 0
x = -50 or 2
As length cannot be negative, x = 2
y = 0.25x + 50
0.25 per mile is the rate
50 is the principal cost
So we know that its $42 a day for Truck A, and its another $0.72 per mile, so we can use d for the number of days, and m for the number of miles:
Truck A: 42d+0.72m
We also know that Truck Company B charges $70 per day and an additional $0.12 a mile. Again, we can use d for the number of days and m for the number of miles:
Truck B: 70d+0.12m
Now if we start plugging in values, we will find when they cost the same. The rest is in the picture. Your answer is m≈47
To find the surface area of the rectangular prism, use the formula:
A=2(wl+hl+hw)
Note that: w = 4, l = 12, h = 3
plug into the equation
A = 2((4)(12) + (3)(12) + (3)(4))
Simplify
A = 2(48 + 36 + 12)
A = 2(96)
Multiply
A = 96 x 2
A = 192
192 m³ is the surface area of the rectangular prism.
hope this helps