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3 years ago

Sonja's credit card has an APR of 21%, calculated on the previous monthly

Mathematics

1 answer:

Leya [2.2K]3 years ago

8 0

Answer: D 87%

Step-by-step explanation:

Ap-ex

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A book costs $12.50 plus sales tax. After tax it costs $13.25. What is the sales tax rate?

WINSTONCH [101]

Answer:

The rate of sales tax is 6%.

Step-by-step explanation:

First you must subtract 12.50 from 13.25

This brings you to .75

Then, divide .75/12.50 to get 0.06 which is equivalent to 6 percent.

6 0

3 years ago

Find the slope of a line that is perpendicular to the line containing the points (–2, –1) and (2, –3). (1 point)

maw [93]

Didn't you already get this question right because it says 1/1 point?

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4 years ago

Pls help or i will fail

vladimir2022 [97]

Answer:

2926

Step-by-step explanation:

8 0

3 years ago

NEED HELP ASAP!!!!

kicyunya [14]

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4 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 %

4 0

3 years ago