Answer:
17
Step-by-step explanation:
the amount of visits given by the problem is:
and we have that the equation that relates the number of visits with the total cost is:
where 
is the total cost for 
number of visits.
We plug into this equation the known value of visitors:
and we solve this expression:
the total cost for 10 visitors is 17.
If you would like to find the x-intercepts of the function f(x) = - 2 * x^2 - 3 * x + 20, you can calculate this using the following steps:
f(x) = - <span>2 * x^2 - 3 * x + 20
</span>f(x) = - (2x - 5) * (x + 4)
1. x = - 4
2. x = 5/2
(x, y) = (-4, 0)
The correct result would be (-4, 0).
Answer:
x= hot dogs
y= soda
Total sold
1 x + 1 y = 87 .............1
2 x 0.50 y = 78.50 .............2
Eliminate y
multiply (1)by -0.50
Multiply (2) by 1.00
-0.50 x -0.50 y = -43.50
2 x + 0.50 y = 78.50
Add the two equations
1 x = 35.00
/ 1
x = 35.00
plug value of x in (1)
1 x + 1 y = 87
35 + y = 87
y = 87 -35
y = 52
y = 52.00
x= 35 hot dogs
y= 52 soda
Step-by-step explanation:
Answer:
- How fast is Joe walking ?
v(Joe) = 1.5km/h
Step-by-step explanation:
v = d/t => d = v·t
Jill
d = 3km/h·4h = 12 km
Joe
d = 18km - 12km = 6km
v = d/t = 6km/4h = 1.5 km/h
This answer is 135.
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