Answer:
Your answer is 35!
Step-by-step explanation:
I'm sure of it!
Answer:
For first equation:
x = 18.5
For second equation:
x = 4.25
Step-by-step explanation:
First one:
-2x + 54 = 17. Subtract 54 on both sides.
-2x = -37. Divide all by -2.
x = 18.5
Second one:
4x - 54 = -9. Add 54 to both sides.
4x = 45. Divide all by 4.
X = 4.25.
Answers:
It costs $15 for one adult
It costs $10 for one child
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Work Shown:
x = cost for one adult ticket (in dollars)
y = cost for one child ticket (in dollars)
"it costs $35 for one adult and two children" so the first equation is x+2y = 35. Solve for x to get x = -2y+35 (subtract 2y from both sides). We'll use this equation later. See the "replacement" step below.
"it costs $60 for two adults and three children" so the other equation to set up is 2x+3y = 60
Use the substitution rule to get rid of the x (replace it with something equivalent in terms of y) then isolate y
2x+3y = 60
2( x )+3y = 60
2( -2y+35 )+3y = 60 ... replace x with -2y+35
2(-2y)+2(35)+3y = 60
-4y+70+3y = 60
-y+70 = 60
-y+70-70 = 60-70
-y = -10
y = 10
Since y = 10, it costs $10 for one kid to get a ticket.
If y = 10, then x must be...
x = -2y+35
x = -2*10+35 ... replace y with 10
x = -20+35
x = 15
Since x = 15, it costs $15 for one adult ticket.
We have been given that a factory purchased a 3D printer in 2010. The value of the printer is modeled by the function , where x is the number of years since 2010. We are asked to find the value of printer after 10 years.
To find the value of printer after 10 years, we will substitute in our given equation.
Upon rounding to nearest hundredth, we will get:
Therefore, the value of the printer after 10 years would be approximately 14.52.