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3 years ago

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Mario and 3 friends each had 3/4 foot of rope. They needed 5 feet of rope altogether. Do they have enough? Explain.

1 answer:

dangina [55]3 years ago

6 0

They would not have enough because 3/4 times 4 would not equal 5...it would equal 3. Mario and his 3 friends each have 3/4 foot of rope. They needed 5 feet of rope altogether. Do they have enough rope? They would need 2 more feet of rope to complete the 5 feet. But they do not have enough feet of rope to make 5 feet.

hope this helps :D

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3 years ago

Solve for m. (-11/6) + m = -2/9

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Answer:

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Step-by-step explanation:

=> (-11/6) + m = -2/9

Adding 11/6 to both sides

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If (-2,4) are the coordinates of a point on the line whose equation is y=Mx+1 , what is the slope of the line?

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Step-by-step explanation:

Step 1: Given that (-2, 4) is a point on the line y = mx + 1, find slope m.

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⇒ 4 = m × -2 + 1

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3 years ago

Use the arc length formula to find the length of the curve y = 2 − x2 , 0 ≤ x ≤ 1. Check your answer by noting that the curve is

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By using the arc length formula, we will see that the length of the curve is L = 1.48

<h3>How to use the arc length formula?</h3>

Here we have the curve:

y = 2 - x^2 with 0 ≤ x ≤ 1

And we want to find the length of the curve.

The arc length formula for a curve y in the interval [x₁, x₂] is given by:

$L =\int\limits^{x_2}_{x_1} {\sqrt{1 + \frac{dy}{dx}^2} } } \, dx$

For our curve, we have:

dy/dx = -2x

And the interval is [0, 1]

Replacing that we get:

$L =\int\limits^{1}_{0} {\sqrt{1 + (-2x)^2} } } \, dx\\\\L \int\limits^{1}_{0} {\sqrt{1 + 4x^2} } } \, dx\\$

This integral is not trivial, using a table you can see that this is equal to:

$L = (\frac{Arsinh(2x)}{4} + \frac{x*\sqrt{4x^2 + 1} }{2})$

evaluated from x = 1 to x = 0, when we do that, we will get:

$L = \frac{Arsinh(2) + 2*\sqrt{5} }{4} = 1.48$

That is the length of the curve.

If you want to learn more about curve length, you can read:

brainly.com/question/2005046

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2 years ago