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3 years ago

Finding a point that partitions a directed line segment

Mathematics

1 answer:

Romashka-Z-Leto [24]3 years ago

4 0

Answer:

Can you take a clearer photo please or just take a picture of the actual problem up closer ?

Step-by-step explanation:

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PLEASE HELP!!! GIVE ME EVERY STEP TO HOW YOU GOT YOUR ANSWERS

asambeis [7]

1) "Subtract -7a+1 from 7+a" means -7a+1 is getting taken away from 7+a, so this can be mathematically expressed as:

Starting expression: (7+a)-(-7a+1)

Distributive property with negatives: 7+a+7a-1

Combine like terms: 6+8a

So the answer for the first one is 6+8a

2) "Subtract -4v-2 from -2-5v" means -4v-2 is getting taken away from -2-5v, so this can be mathematically expressed as:

Starting expression: (-2-5v)-(-4v-2)

Distributive property with negatives: -2-5v+4v+2

Combine like terms: -v

So the answer for the second one is -v

Hope these explanations are clear.

5 0

3 years ago

How do I do this please explain step by step !!

MArishka [77]

Answer:

you will need a graph

Step-by-step explanation:

so you will need to find -4 on the x axis and find 4 on the y axis then join the points and the same with -9 on x axis and 6 on y axis then the same on all of them

4 0

3 years ago

The length of a rectangle is increasing at a rate of 4 meters per day and the width is increasing at a rate of 1 meter per day.

puteri [66]

Answer:

$\displaystyle \frac{dA}{dt} = 102 \ m^2/day$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Geometry

Area of a Rectangle: A = lw

l is length
w is width

Calculus

Derivatives

Derivative Notation

Implicit Differentiation

Differentiation with respect to time

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

Step-by-step explanation:

Step 1: Define

$\displaystyle l = 10 \ meters$

$\displaystyle \frac{dl}{dt} = 4 \ m/day$

$\displaystyle w = 23 \ meters$

$\displaystyle \frac{dw}{dt} = 1 \ m/day$

Step 2: Differentiate

[Area of Rectangle] Product Rule: $\displaystyle \frac{dA}{dt} = l\frac{dw}{dt} + w\frac{dl}{dt}$

Step 3: Solve

[Rate] Substitute in variables [Derivative]: $\displaystyle \frac{dA}{dt} = (10 \ m)(1 \ m/day) + (23 \ m)(4 \ m/day)$
[Rate] Multiply: $\displaystyle \frac{dA}{dt} = 10 \ m^2/day + 92 \ m^2/day$
[Rate] Add: $\displaystyle \frac{dA}{dt} = 102 \ m^2/day$

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

Unit: Implicit Differentiation

Book: College Calculus 10e

8 0

4 years ago

Hat is the length of the hypotenuse, x, is a Pythagorean triple? 22 29 41 42

aniked [119]

Of your numbers listed, 29 and 41 are the lengths of the hypotenuse of a Pythagorean triple.

Those triples are
(20, 21, 29)
(9, 40, 41)

_____
The On-Line Encyclopedia of Integer Sequences (OEIS) lists the hypotenuses of primitive triples as sequence number A020882.

4 0

4 years ago

What is a synonym for "average rate of change"?

Vaselesa [24]

Answer:

Velocity :D

Step-by-step explanation:

5 0

3 years ago

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