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3 years ago

Y = 4r - 9 Complete the missing value in the solution to the equation. (3, )

Mathematics

2 answers:

Nostrana [21]3 years ago

5 0

Answer:

Step-by-step explanation:

Equation given = y=4r-9

substitute r=3

y=4*3-9

y=12-9

y=3

(3,3)

kozerog [31]3 years ago

4 0

The given equation: y=4r-9
Substitute the value of x=3 into the equation

y= 4(3) -9
y= 12-9 subtract
y=3

Answer (3,3)

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Answer:

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Step-by-step explanation:

The equation of the arch is

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Differentiating with respect to $x$ we get

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Equating with zero

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Double derivative of the equation

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So, the truck's center should be below the point $(10,12)$ for maximum width to pass through.

Now truck is 11 feet tall so $y=11$

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The maximum width of the truck can be $14-6=8\ \text{ft}$ if it is 11 feet tall.

So, the truck which has a width of 7 feet can fit under the arch.

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