4 years ago

Write a fraction equivalent to 60mi/4hr that has 2 in the denominator

1 answer:

5 0

30mi/2hr

Explanation: just divide both by two. It won’t always work like this. You can’t always divide something by 2 to get 2. Find a number that will go into the denominator two times and divide the numerator by it also.

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When Joey dives off a diving board, the equation of his pathway can be modeled by h = -16t2 + 15t + 12. A) Find Joey's maximum h

sergeinik [125]

Answer:

a) 15.52ft

b) 0.47 secs

Step-by-step explanation:

h = -16t^2 + 15t + 12

The maximum height is reached after -b/2a seconds

a = -16 , b = 15, c= 12

-b/2a = -15/2(-16)

= -15/-32

= 0.47 secs

The maximum height = -16(0.47)^2 + 15(0.47) + 12

= -3.5344 + 7.05 + 12

= 15.5156

= 15.52ft

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4 years ago

It would mean a lot if you helped:)

nataly862011 [7]

1. yes
2.no
3.yes
4. no
5. yes

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4 years ago

A triangle has the side lengths 5, 7, and 11. Which term best describes the triangle?

Pavlova-9 [17]

It is a scalene triangle bc it has no equal sides

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3 years ago

A surveying team set up some equipment 104104 ft from the base of a tree in order to sight the top of the tree. From ground leve

jarptica [38.1K]

Answer:

Relative error = 0.0254 %

Step-by-step explanation:

Given details

Height of equipment from base is 104 ft

Elevation angle is 27.5 degree

From figure we have

$tan\theta = \frac{x}{104}$ .........1

$tan(27.5) = \frac{x}{104}$

x = 54.13 ft

differentiating 1st eq wrt x

$\frac{d}{dx} tan\theta = \frac{d}{dx} [\frac{x}{104}]$

$sec^2\theta \frac{d\theta}{dx} = \frac{1}{104}$

Taken $d\theta \ as \Delta x \ and\ dx = \Delta x$ for minute change

$\Delta x = 1.5% x$

$= 0.015 \times 54.13 = 0.8119 ft$

from $sec^2 \theta \frac{d\theta}{dx} = \frac{1}{104}$

$\Delta \theta = \frac{1}{104 sec^2 \theta} \Delta x$

$\Delta \theta = \frac{1}{104 \times 1.115} 0.8119$

$\Delta \theta = 0.007$

Reltaive error $= \frac{\Delta \theta}{\theta} \times 100$

$= \frac{0.007}{27.5}\times 100$

Relative error = 0.0254 %

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4 years ago

Doing a recent trip to a zoo, The wild life club paid a total of $350 for admission for its members. Adults paid $7.50 each for

Firdavs [7]

Answer:

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Step-by-step explanation:

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4 years ago