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Angelina_Jolie [31]

3 years ago

14

A physics student takes her pulse and determines that her heart beats periodically 40 times in 20 seconds. The period of her hea

rtbeat is.

1 answer:

Inga [223]3 years ago

6 0

Answer:

either .5 seconds or .2 seconds

Explanation:

I hope this helps you.

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Which is a condition that should be considered when purchasing food that is safe?

SIZIF [17.4K]

A condition that should be considered when purchasing food that is safe is that the sell-by date should not be expired.

Option A is incorrect. Fruits should be prewashed.

Products should also have a nutritional value.

Meat should not be in a package that allows for air circulation. This is necessary in order to prevent it from spoiling.

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brainly.com/question/934835

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3 years ago

He placenta begins absorbing nutrients and oxygen from the mother's body.

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The placenta develops within the first couple of weeks of pregnancy. The placenta is the lifeline of the fetal body and soon after the placenta is developed and in place, it begins starting to absorb nutrients for the developing fetus. This all occurs in the first trimester.

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3 years ago

Differentiate the following functions (i) x(1+x)^3

statuscvo [17]

Answer:

$\displaystyle y' = (1 + x)^2(4x + 1)$

General Formulas and Concepts:

<u>Algebra I</u>

Terms/Coefficients
Functions
Function Notation
Factoring

<u>Calculus</u>

Derivatives

Derivative Notation

Derivative Property [Addition/Subtraction]: $\displaystyle \frac{d}{dx}[f(x) + g(x)] = \frac{d}{dx}[f(x)] + \frac{d}{dx}[g(x)]$

Basic Power Rule:

f(x) = cxⁿ
f’(x) = c·nxⁿ⁻¹

Derivative Rule [Product Rule]: $\displaystyle \frac{d}{dx} [f(x)g(x)]=f'(x)g(x) + g'(x)f(x)$

Derivative Rule [Chain Rule]: $\displaystyle \frac{d}{dx}[f(g(x))] =f'(g(x)) \cdot g'(x)$

Explanation:

<u>Step 1: Define</u>

<em>Identify</em>

y = x(1 + x)³

<u>Step 2: Differentiate</u>

Product Rule [Derivative Rule - Chain Rule]: $\displaystyle y' = \frac{d}{dx}[x] \cdot (1 + x)^3 + x \cdot \frac{d}{dx}[(1 + x)^3] \cdot \frac{d}{dx}[1 + x]$
Derivative Property [Addition/Subtraction]: $\displaystyle y' = \frac{d}{dx}[x] \cdot (1 + x)^3 + x \cdot \frac{d}{dx}[(1 + x)^3] \cdot (\frac{d}{dx}[1] + \frac{d}{dx}[x])$
Basic Power Rule: $\displaystyle y' = x^{1 - 1} \cdot (1 + x)^3 + x \cdot 3(1 + x)^{3 - 1} \cdot (0 + x^{1 - 1})$
Simplify: $\displaystyle y' = (1 + x)^3 + 3x(1 + x)^2$
Factor: $\displaystyle y' = (1 + x)^2 \bigg[ (1 + x) + 3x \bigg]$
Combine like terms: $\displaystyle y' = (1 + x)^2(4x + 1)$

Topic: AP Calculus AB/BC (Calculus I/I + II)

Unit: Derivatives

Book: College Calculus 10e

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3 years ago

Responsible behaviors, knowing the rules and processes of the sport, and having good sportsmanship are all vital components of t

iVinArrow [24]

This statement is true

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3 years ago

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How long is frozen meat good for after expiration date?.

myrzilka [38]

Answer:

As long as ur freezer is 0 °F or lower it’s good forever

7 0

2 years ago