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Veseljchak [2.6K]
3 years ago
13

Can some one please help me with this question answer What is 40%of 320

Mathematics
2 answers:
tensa zangetsu [6.8K]3 years ago
8 0
40% = 40/100 = 0.4

320 * 0.4 = 128  ← answer
Taya2010 [7]3 years ago
4 0
320*0.4=128
Final answer: 128
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What is the probability of the complement of rolling a number less than 5 by using a six sided dye
IrinaVladis [17]

Answer:

2/3

Step-by-step explanation:

Less than 5 is 1,2,3,4 and 4 out of 6 is also equal to 2/3

3 0
3 years ago
Find the particular solution of the differential equation?<br> /=5^3+9^2, when =1, =8
kipiarov [429]

Answer:

\displaystyle s = \frac{5t^4}{4} + \frac{9}{t} - \frac{9}{4}

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right  

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality

<u>Algebra I</u>

  • Exponential Rule [Rewrite]:                                                                           \displaystyle b^{-m} = \frac{1}{b^m}

<u>Calculus</u>

Derivatives

Derivative Notation

Solving Differentials - Integrals

Integration Constant C

Integration Rule [Reverse Power Rule]:                                                               \displaystyle \int {x^n} \, dx = \frac{x^{n + 1}}{n + 1} + C

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

Integration Property [Addition/Subtraction]:                                                       \displaystyle \int {[f(x) \pm g(x)]} \, dx = \int {f(x)} \, dx \pm \int {g(x)} \, dx

Step-by-step explanation:

*Note:

Ignore the Integration Constant C on the left hand side of the differential equation when integrating.

<u>Step 1: Define</u>

\displaystyle \frac{ds}{dt} = 5t^3 + \frac{9}{t^2}

t = 1

s = 8

<u>Step 2: Integrate</u>

  1. [Derivative] Rewrite [Leibniz's Notation]:                                                     \displaystyle ds = (5t^3 + \frac{9}{t^2})dt
  2. [Equality Property] Integrate both sides:                                                     \displaystyle \int {} \, ds = \int {(5t^3 + \frac{9}{t^2})} \, dt
  3. [Left Integral] Reverse Power Rule:                                                             \displaystyle s = \int {(5t^3 + \frac{9}{t^2})} \, dt
  4. [Right Integral] Rewrite [Integration Property - Addition]:                           \displaystyle s = \int {5t^3} \, dt + \int {\frac{9}{t^2}} \, dt
  5. [Right Integrals] Rewrite [Integration Property - Multiplied Constant]:     \displaystyle s = 5\int {t^3} \, dt + 9\int {\frac{1}{t^2}} \, dt
  6. [Right Integrals] Rewrite [Exponential Rule - Rewrite]:                               \displaystyle s = 5\int {t^3} \, dt + 9\int {t^{-2}} \, dt
  7. [Right Integrals] Reverse Power Rule:                                                         \displaystyle s = 5(\frac{t^4}{4}) + 9(\frac{t^{-1}}{-1}) + C
  8. [Right Integrals] Rewrite [Exponential Rule - Rewrite]:                               \displaystyle s = 5(\frac{t^4}{4}) + 9(\frac{1}{t}) + C
  9. Multiply:                                                                                                         \displaystyle s = \frac{5t^4}{4} + \frac{9}{t} + C

<u>Step 3: Solve</u>

  1. Substitute in variables:                                                                                 \displaystyle 8 = \frac{5(1)^4}{4} + \frac{9}{1} + C
  2. Evaluate exponents:                                                                                     \displaystyle 8 = \frac{5}{4} + \frac{9}{1} + C
  3. Divide:                                                                                                           \displaystyle 8 = \frac{5}{4} + 9 + C
  4. Add:                                                                                                               \displaystyle 8 = \frac{41}{4} + C
  5. [Subtraction Property of Equality] Isolate <em>C</em>:                                               \displaystyle \frac{-9}{4} = C
  6. Rewrite:                                                                                                          \displaystyle C = \frac{-9}{4}

Particular Solution: \displaystyle s = \frac{5t^4}{4} + \frac{9}{t} - \frac{9}{4}

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

Unit: Differentials Equations and Slope Fields

Book: College Calculus 10e

3 0
3 years ago
I need help —30 POINTS——<br> 22.) Please!
GrogVix [38]

Answer:

a.  there are sometimes infinitely many solutions to the system

b. will always have one solution

c.  There is never any solution for the system

Step-by-step explanation:

22a  If two lines have the same slope, they can either be parallel lines which never intersect and have no solution or the same line which have infinite solutions.  So  there are sometimes infinitely many solutions to the system depending on if they are the same line or are parallel lines

b  If the lines have different slopes, they will eventually intersect each other at a point, so they will always have one solution


c.  If the lines have the same slope and a different y intercept, they are parallel lines and will never intersect.  There are no solutions when they never intersect. There is never any solution for the system

8 0
3 years ago
Ben is 3 times as old as kyra dilip is 4 years younger than kyra. if kyra is X years old how old is ben ?how old is dilip write
sesenic [268]
He would be 7 years older
3 0
3 years ago
I NEED HELPPP ASAPPP
yarga [219]
The answers are B C and E
4 0
3 years ago
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