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Elenna [48]
3 years ago
6

What is 5x-9+2-4=9.4

Mathematics
1 answer:
Dominik [7]3 years ago
4 0

Answer:

x=5.1

Step-by-step explanation:

5x-9+2-4=9.4

5x=9.4+4-2+9

5x=20.4

x=5.1

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Is 2/4 and 1/2 the same??
Reptile [31]

since 1/2 x 2/2 = 2/4

2/4 = 1/2

3 0
4 years ago
Before reducing the radical, what number is under the square root symbol? A.81 B.144 C.50 D.63
Lady_Fox [76]

Answer:

D. 63

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> </u>

<u>Algebra I</u>

  • Terms/Coefficients

<u>Trigonometry</u>

[Right Triangles Only] Pythagorean Theorem: a² + b² = c²

  • a is a leg
  • b is another leg
  • c is the hypotenuse<u> </u>

Step-by-step explanation:

<u>Step 1: Identify Variables</u>

Leg <em>a</em> = 9

Leg <em>b</em> = <em>b</em>

Leg <em>c</em> = 12

<u>Step 2: Solve for </u><em><u>b</u></em>

  1. Substitute in variables [Pythagorean Theorem]:                                          9² + b² = 12²
  2. [Subtraction Property of Equality] Isolate <em>b</em> term:                                        b² = 12² - 9²
  3. Evaluate exponents:                                                                                       b² = 144 - 81
  4. Subtract:                                                                                                          b² = 63
  5. [Equality Property] Square root both sides:                                                  b = √63
7 0
3 years ago
Gambles are independent, and each one results in the player being equally likely to win or lose 1 unit. Let W denote the net win
wel

Answer:

a) P{W>0} = 0.5

b) P{W<0} = 0.5

c) E[W] = 0

Step-by-step explanation:

Solution:

a) P(W > 0) is 0.5 because there is a 0.5 chance the player will win on their first gamble and stop with a net profit.

b) P(W = 0) is 0.25 because there is a 0.5 chance the player will lose on their first gamble, then also a 0.5 chance they will win on their second gamble and stop with a profit of 0.

All other combinations of gambles result in a net loss, so P(W < 0) = 1−P(W > 0)−P(W = 0)

c) The expected value can be obtained by summing the products of each profit and the probability of that profit. In this case, you have 1∗0.5+0∗0.25+(−1)∗0.125+(−2)∗0.0625, etc. So E(W) is the sum to infinity:

                               = (1 - n) / 2^( n + 1 )

                               = 0

3 0
3 years ago
Three students buy lunch in the cafeteria One student buys 4 hamburgers, 4 orders of tries, and 1 soda for $21. Another student
icang [17]

Answer:

The answer to your question is letter C

Step-by-step explanation:

Data

hamburgers = h

fries = f

soda = s

Student 1         4h + 4f + 1s = 21

Student 2         1h + 1f + 1s = 5

Student 3         1h + 1f        = 5

From the data of students 2 and 3 we can conclude that the system will not have a solution because is not possible that one student has charged 3 items for the same cost of student 3 that bought only 2 items.

7 0
3 years ago
What is 3 ln 3 - ln 9 expressed as a single natural logarithm?
avanturin [10]
Hello,

3ln(3) - ln(9)=ln(3^3)-ln(9)=ln(3^3/9)=ln(3)=1,0986122886681....

6 0
3 years ago
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