Answer:
2 1/3 planes
Step-by-step explanation:
3.5 lego planes / 60 minutes
So fraction =
3.5/60
In 40 minutes he will build x planes
So the fraction equation is:
3.5/60 = x/40
Solve:
Cross multiply =
140 = 60x
x = 2 1/3
2 1/3 planes
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-Chetan K
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Answer:
(d) x = 2
Step-by-step explanation:
Adding the two equations gives ...
(-8x +8y) +(3x -8y) = (8) +(-18)
-5x = -10 . . . . . sum of the two equations
x = 2 . . . . . . . . result of dividing by -5
The linear function that describes the total cost of a tiny house, based on the number of square feet A is given by:
C = 175A + 1000.
<h3>What is a linear function?</h3>
A linear function is modeled by:
y = mx + b
In which:
- m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.
- b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value of the function.
In this problem:
- The house has a fixed cost of $1,000 for the factory equipment, hence the y-intercept is of b = 1000.
- The variable cost is of $175 per square foot, hence the slope is of a = 175.
Then, the equation is given as follows:
C = 175A + 1000.
More can be learned about linear functions at brainly.com/question/24808124
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