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3 years ago

6

The i-phone 7 Plus 32G costs $769. Amazon has a sale for 15% off. What's the sale price?

1 answer:

kiruha [24]3 years ago

4 0

Answer:

653.65

Step-by-step explanation:

? 15

769 100 15/100 is 15%.

769 * 15 = 11,535 11,535/100 = 115.35

769

- 115.35

653.65

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Marcy is concerned that her findings may be due to an extraneous uncontrolled variable and not her treatment. Marcy is most conc

Westkost [7]

Answer:

c

Step-by-step explanation:

because it's her extraneous uncontrolled variable

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3 years ago

What is the length of the curve with parametric equations x = t - cos(t), y = 1 - sin(t) from t = 0 to t = π? (5 points)

zzz [600]

Answer:

B) 4√2

General Formulas and Concepts:

<u>Calculus</u>

Differentiation

Derivatives
Derivative Notation

Basic Power Rule:

f(x) = cxⁿ
f’(x) = c·nxⁿ⁻¹

Parametric Differentiation

Integration

Integrals
Definite Integrals
Integration Constant C

Arc Length Formula [Parametric]: $\displaystyle AL = \int\limits^b_a {\sqrt{[x'(t)]^2 + [y(t)]^2}} \, dx$

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

$\displaystyle \left \{ {{x = t - cos(t)} \atop {y = 1 - sin(t)}} \right.$

Interval [0, π]

<u>Step 2: Find Arc Length</u>

[Parametrics] Differentiate [Basic Power Rule, Trig Differentiation]: $\displaystyle \left \{ {{x' = 1 + sin(t)} \atop {y' = -cos(t)}} \right.$
Substitute in variables [Arc Length Formula - Parametric]: $\displaystyle AL = \int\limits^{\pi}_0 {\sqrt{[1 + sin(t)]^2 + [-cos(t)]^2}} \, dx$
[Integrand] Simplify: $\displaystyle AL = \int\limits^{\pi}_0 {\sqrt{2[sin(x) + 1]} \, dx$
[Integral] Evaluate: $\displaystyle AL = \int\limits^{\pi}_0 {\sqrt{2[sin(x) + 1]} \, dx = 4\sqrt{2}$

Topic: AP Calculus BC (Calculus I + II)

Unit: Parametric Integration

Book: College Calculus 10e

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3 years ago

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3 years ago

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4 years ago

Read 2 more answers

Is 5.78778778 ..a rational or irrational number

Orlov [11]

5.78778778 ….. is an irrational number because the decimal can't be represented as a ratio or fraction.

<h3>What are irrational numbers?</h3>

Irrational numbers are the set of real numbers that cannot be expressed in the form of a fraction, x/y where x and y are integers.

In other words, an Irrational Number is a real number that cannot be written as a simple fraction.

For example π = 3.1459....

π cannot be written as a fraction or ratio.

The decimals of irrational number goes on forever without repeating.

The decimals are continuous.

Therefore, 5.78778778 ….. is an irrational number because the decimal can't be represented as a ratio or fraction.

learn more on irrational number here: brainly.com/question/3386568

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1 year ago