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3 years ago

What are the main units of length in the US.

Mathematics

1 answer:

arlik [135]3 years ago

3 0

Millimeters, centimeters, inches, yards, meters

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What is the answer to. -4=5n+6

loris [4]

First you need to leave the variable by itself.
-4=5n+6
-4-6=5n
-10=5n
n=-2 done!

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4 years ago

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Find the midpoint of the line segment with the given endpoints.<br><br> Please help

leonid [27]

Answer: Midpoint: (3,-8)
(WORK SHOWN BELOW)

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3 years ago

The product of 3 and r

Kazeer [188]

Answer:

Step-by-step explanation:

3+r

sense there is no other number to muliply 3 with, then you combine them together and get "3r"

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3 years ago

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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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3 years ago

A white-tailed deer can sprint at speeds up to 30 miles per hour. American bison can run at speeds up to 3,520 feet per minute.

Sergeeva-Olga [200]

3520 ft per minute=40 mi per hour, which means the American bison is faster by 10 more miles per hour.

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3 years ago

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