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bija089 [108]
3 years ago
15

I don’t understand plz help :(((

Mathematics
2 answers:
alex41 [277]3 years ago
3 0

Answer:

k=55

Step-by-step explanation:

What you do is you have to get k by itself.

You will times 8 on both sides first.

k+1=56. You will then subtract 1 on both sides.

k=55 is your answer.

Verizon [17]3 years ago
3 0

Answer:

k=55

Step-by-step explanation:

You do 8x7=56-1=55

so 55+1/8=7

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Which expression is equivalent to 3i(9i +15)?<br> - 45 +9i<br> -27 + 452<br> 27 +452<br> 2722 + 452
vaieri [72.5K]

Answer: B. -27+452i

Step-by-step explanation: Simplify the real and imaginary parts of the expression.

Hope this helps you out.

3 0
3 years ago
The volume of a cylinder is 2,200 pi cubic inches. The diameter of the circular base is 10 inches. What is the height of the cyl
Margarita [4]
88 inches is the answer
the area of the circular base is 25pi, since diameter is 10 that means radius is 5, raise it to second power and multily pi.
divide 2200pi by 25pi
therefore its height is 88 inches
3 0
4 years ago
Read 2 more answers
How would I make a dot plot with these requirements?:
Lorico [155]

Answer:

2

Step-by-step explanation:

4 0
2 years ago
Help with b please. thank you<br>​
erastovalidia [21]

Answer:

See explanation.

General Formulas and Concepts:

<u>Algebra I</u>

  • Terms/Coefficients
  • Factoring

<u>Algebra II</u>

  • Polynomial Long Division

<u>Pre-Calculus</u>

  • Parametrics

<u>Calculus</u>

Differentiation

  • Derivatives
  • Derivative Notation

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

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:

  1. f(x) = cxⁿ
  2. f’(x) = c·nxⁿ⁻¹

Derivative Rule [Quotient Rule]:                                                                           \displaystyle \frac{d}{dx} [\frac{f(x)}{g(x)} ]=\frac{g(x)f'(x)-g'(x)f(x)}{g^2(x)}

Parametric Differentiation:                                                                                     \displaystyle \frac{dy}{dx} = \frac{\frac{dy}{dt}}{\frac{dx}{dt}}

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

\displaystyle x = 2t - \frac{1}{t}

\displaystyle y = t + \frac{4}{t}

<u>Step 2: Find Derivative</u>

  1. [<em>x</em>] Differentiate [Basic Power Rule and Quotient Rule]:                             \displaystyle \frac{dx}{dt} = 2 + \frac{1}{t^2}
  2. [<em>y</em>] Differentiate [Basic Power Rule and Quotient Rule]:                             \displaystyle \frac{dy}{dt} = 1 - \frac{4}{t^2}
  3. Substitute in variables [Parametric Derivative]:                                           \displaystyle \frac{dy}{dx} = \frac{1 - \frac{4}{t^2}}{2 + \frac{1}{t^2}}
  4. [Parametric Derivative] Simplify:                                                                   \displaystyle \frac{dy}{dx} = \frac{t^2 - 4}{2t^2 + 1}
  5. [Parametric Derivative] Polynomial Long Division:                                     \displaystyle \frac{dy}{dx} = \frac{1}{2} - \frac{7}{2(2t^2 - 1)}
  6. [Parametric Derivative] Factor:                                                                   \displaystyle \frac{dy}{dx} = \frac{1}{2} \bigg( 1 - \frac{9}{2t^2 + 1} \bigg)

Here we see that if we increase our values for <em>t</em>, our derivative would get closer and closer to 0.5 but never actually reaching it. Another way to approach it is to take the limit of the derivative as t approaches to infinity. Hence  \displaystyle \frac{dy}{dx} < \frac{1}{2}.

Topic: AP Calculus BC (Calculus I + II)

Unit: Parametrics

Book: College Calculus 10e

7 0
3 years ago
What is 7+5 equal to?
dem82 [27]
It equals twelve. hope it helps :)
5 0
3 years ago
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