three is subtracted from a number that is doubled this entire result is tripled which equals twenty one what is the number​

Answer:

F =672

Step-by-step explanation:

joint variation is of the form

F = k *q1 * q2

Inversly means divide

F = k * q1 * q2

     -------------------

              d^2

We know  F=8 when q1=2, q2=8, and d=4  so we can solve for k

8 = k * 2*8

    -----------------

          4^2

8 = 16k

     ----

     16

8 = k

Substituting

F = 8 * q1 * q2

     -------------------

              d^2

Let q1=28, q2=12, and d=2

F = 8 * 28 * 12

   ----------------

    2^2

F = 2688

      -------

         4

F =672

We are given:

F varies jointly (directly) with q1 and q2, which means that F is proportional to both q1 and q2. also,

F varies inversely with d², so F is inversely proportional to the square to d

Finding a mathemetical experssion:

using the above information, we can say that:

F ∝ q₁

F ∝ q₂

F ∝ 1/(d²)

joining these together, we get:

F ∝ q₁q₂ / d²

let's say that 'k' is the constant of proportionality in this case,

F = k (q₁q₂ / d²)

First case:

F = 8, q₁ = 2, q₂ = 8, d = 4

we can use these values in our expression to find k

[tex]8 = k\frac{2*8}{4^2}[/tex]

[tex]8 = k\frac{16}{16}[/tex]

k = 8

Finding F in the second case:

q₁ = 28, q₂ = 12, d = 2, k = 8

[tex]F = k\frac{q_{1}*q_{2}}{d^2}[/tex]

[tex]F = 8(\frac{28*12}{2^2})[/tex]

[tex]F = 8(\frac{336}{4})[/tex]

[tex]F = 2(336)[/tex]

F = 672 N

Answer:

25

Step-by-step explanation:

turn 68% into a decimal (or keep as a percentage, your choice) and divide

17 divided by 0.68 (68% as a decimal) = 25

Answer:

[tex](10x - 14) = (7x - 8) \\ \\ 10x - 7x = 14 - 8 \\ \\ 3x = 6 \\ \\ x\frac{6}{3} \\ \\ x = 2[/tex]

it was equal to each other

Answer:

So, if the graph is a straight line,it is the graph of linear function. From a table, you can verify a linear function by examining the x and y values. The rate of change of y with respect to x remains constant for a linear function.

HOPE IT HELPS YOU.....☺☺☺

PLEASE MARK AS BRAINLIEST........☺☺☺

Step-by-step explanation:

6 and 10. 6*10=60 10-6=4

Percentage decrease is the amount by which a given number is decreased expressed as a percentage.

Reasons:

The percentage by which the number was decreased = 10%

The number is decreased by 10%

Let x represent the number, we have;

New remainder after first decrease = x -  10% × x = x - 0.1·x = 0.9·x

Decreasing the new number by 10% gives;

Second new number = 0.9·x - 0.09·x = 0.81·x

The percentage by which the number is decreased = x - 0.81·x = 0.19·x

The percentage by which the number is decreased = 19%

Learn more here:

https://brainly.com/question/18569053

Okay, suppose your income is about $100.

You might spend $70 & save $30.

Now, suppose your income remains constant at $100 but your expenses go up to, say, $90. You can see that your savings will reduce or decrease. Now, you'll only have about $10 to save.

=》 So, if your income is constant, then your savings will 'decrease' when your expenses increase.

_______

RainbowSalt2222 ☔

Answer: f(-9)

Step-by-step explanation:

A function is described in the form of f(x)

Therefore, if this is how a function is stated we have x as the input.

Here, the x is equal to -9

So now:

f(-9) after substitution.

Answer:

x = 29

Step-by-step explanation:

These angles are vertical angles which mean that they're equal to each other:

2x - 24 = x + 5

2x - x = 5 + 24

x = 29

Answer:

Option B) 13 is correct

Step-by-step explanation:

Hi how u doin ?

[tex] log( \frac{x}{x + 1} ) = \\ [/tex]

[tex] log(x) - log(x + 1) [/tex]

Have a great day ❤

Answer:

[tex]\displaystyle \int {2 \tan (2x + \pi)} \, dx = - \ln \big| \cos (2x + \pi) \big| + C[/tex]

General Formulas and Concepts:

Calculus

Differentiation

Derivative Property [Multiplied Constant]:                                                           [tex]\displaystyle \frac{d}{dx} [cf(x)] = c \cdot f'(x)[/tex]

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

Basic Power Rule:

Integration

Integration Property [Multiplied Constant]:                                                         [tex]\displaystyle \int {cf(x)} \, dx = c \int {f(x)} \, dx[/tex]

U-Substitution

Trigonometric Integration

Step-by-step explanation:

Step 1: Define

Identify.

[tex]\displaystyle \int {2 \tan (2x + \pi)} \, dx[/tex]

Step 2: Integrate Pt. 1

Step 3: Integrate Pt. 2

Identify variables for u-substitution.

Step 4: Integrate Pt. 3

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

Unit: Integration

Step-by-step explanation: −913−(−113)

=−913−(−113)

=−913+113

=−800

Answer:

  x = 6

Step-by-step explanation:

12(x -2) +3x = 1/3(x +12) +10x

12x -24 +3x = 1/3x +4 +10x . . . . . eliminate parentheses

15x = (10 1/3)x +28 . . . . . . . . . . add 24, collect terms

(4 2/3)x = 28 . . . . . . . . . . . . . subtract 10 1/3

x = (3/14)(28) = 6 . . . . . . . . multiply by 1/(4 2/3) = 3/14

The value x=6 satisfies the equation.

Answer:

multiply them by a a number that allows the denominators to be the same

Step-by-step explanation:

example

1/2-1/6

I would multiply 1/2 by 3 to get 3/6 which i could then subtract from 1/6

3/6-1/6 = 2/6

Answer:

Step By Step Explanation!-

57.82

÷

0.784

______

57820

÷

784

______

73.75

57.82

÷

0.784

_____

73.75

By using the division property, the value of the expression 57.82 ÷ 0.784 will be 73.75.

Algebra is the study of graphic formulas, while logic is the manipulation of those inscriptions.

Parenthesis, Exponent, Multiply, Divide, Add, and Subtraction is all part of the PEMDAS formula. To answer the problem properly and accurately, this rule is applied.

The numbers are given below.

57.82 and 0.784

Then the division between the numbers 57.82 and 0.784 will be given by putting a dividing sign between them. Then we have

⇒ 57.82 ÷ 0.784

⇒ 57.82 / 0.784

⇒ 73.75

The value of the expression 57.82 ÷ 0.784 will be 73.75.

More about the Algebra link is given below.

https://brainly.com/question/953809

#SPJ2

Answer:

1

Step-by-step explanation:

2/7+5/7=7/7=1 because 7/7 would be a 1 whole

Answer:

35/7

Step-by-step explanation:

4 = 28/7

28/7 + 2/7 + 5/7 = 35/7

Answer:

it is a b and c

Step-by-step explanation:

Answer:

The answer is 19.79$ ⁄(⁄ ⁄•⁄-⁄•⁄ ⁄)⁄

Answer:

19.79

Step-by-step explanation:

Answer:

the answer is 7, because x<8 means less than 8 so it's 7

Step-by-step explanation:

hope this helps!

Answer:

under

Step-by-step explanation:

B D E

Step-by-step explanation:

Thereafter,

Distance :-

Time :-

Average Speed :-

Answer:

what

Step-by-step explanation:

Answer:

Appologies but Why do you have pOn open?

Step-by-step explanation:

umm that is inapropriate but idrc

Answer:

1/6

Step-by-step explanation:

prob. that first spin will land on blue = 1/4

prob. that the second spin will land on yellow = 2/8

= 1/4 * 2/8 = 1/16  

Answer:

y = - 1/7x - 7

Step-by-step explanation:

Given equation ,

=> y = -1/7 - 2

On comparing to slope intercept form of the line we get the slope as -1/7

Now as we know that the slope of two parallel lines are same . So the slope of parallel line will be -1/7 .

Using point slope form ,

=> y - 6 = -1/7( x -7)

=> y -6 = -1/7x +1

=> y -7 = -1/7x

=> y = -1/7x -7