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oee [108]
3 years ago
15

4(x + 9) = 20 how do i show my work

Mathematics
2 answers:
rodikova [14]3 years ago
7 0
4(x+9)=20.
4x+9=20
20-9=11
4x=11
11/4=2.75
mihalych1998 [28]3 years ago
4 0

Answer:

x=-4

Step-by-step explanation:

First, distribute the 4

this makes 4x + 36 = 20

Then, subtract 36 to combine like terms. 4x = -16

divide 4x! x = -4

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Read the following excerpt from a magazine carefully, and complete the activities.
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Suppose N has a geometric distribution with parameter p. Derive a closed-form expression for E(N | N <= k), k = 1,2,... Check
vfiekz [6]

Answer:

P(X= k) = (1-p)^k-1.p

Step-by-step explanation:

Given that the number of trials is

N < = k, the geometric distribution gives the probability that there are k-1 trials that result in failure(F) before the success(S) at the kth trials.

Given p = success,

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Hence the distribution is described as: Pr ( FFFF.....FS)

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Given p= 0.2, k= 3,

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3 years ago
What is the sum of 5c-c
shutvik [7]

Answer:

4c

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
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<u>Algebra I</u>

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Step-by-step explanation:

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5c - c

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6 0
3 years ago
Which equation results from taking the square root of both sides of (x + 9)2 = 25?
Alex_Xolod [135]

Answer:

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