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3 years ago

What's the x-intercept for number 26?

Mathematics

1 answer:

Lunna [17]3 years ago

6 0

It gives function: h = -16t^2 + 40
water is when height is 0 so solve for 0= -16t^2 + 40
subtract 40 from both sides: -40 = -16t^2
divide by -16: -40/-16 = t^2
simplify: 5/2 = t^2
square root both sides: 1.58 = t

the orange hits the river in 1.58 seconds.

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When is estimation is an effective way to determine an answer

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4 years ago

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Gerry thinks that the points (4,2) and (−1,4) form a line perpendicular to a line with slope 4. Do you agree? Why

faust18 [17]

Answer:

The answer to your question is these lines are not perpendicular.

Step-by-step explanation:

Data

A (4, 2)

B (-1, 4)

slope = m = 4

Perpendicular lines mean that these lines cross and form an angle of 90°. Also, the slope of perpendicular lines is negative reciprocals.

Process

1.- Find the slope of the second line and compare it to the slope given.

slope = $\frac{y2 - y1}{x2 - x1}$

Substitution

slope = $\frac{4 - 2}{-1 - 4}$

Simplification and result

slope = $\frac{-2}{5}$

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4 years ago

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Anna11 [10]

Answer:

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Step-by-step explanation:

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$3n + 1.4n = 8.8\\4.4n = 8.8\\n = 2$

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3 years ago

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ololo11 [35]

Answer: $30\ ft.^3$

Step-by-step explanation:

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