A programmer plans to develop a new software system. In planning for the operating system that he will use, he needs to estimate the percentage of computers that use a new operating system. How many computers must be surveyed in order to be 95% confident that his estimate is in error by no more than one percentage point? Complete parts (a) through (c) below. a) Assume that nothing is known about the percentage of computers with new operating systems. n= (Round up to the nearest integer.) b) Assume that a recent survey suggests that about 92% of computers use a new operating system. n= (Round up to the nearest integer.) c) Does the additional survey information from part (b) have much of an effect on the sample size that is required? O A. No, using the additional survey information from part (b) does not change the sample size. O B. No, using the additional survey information from part (b) only slightly increases the sample size. O c. Yes, using the additional survey information from part (b) dramatically increases the sample size. O D. Yes, using the additional survey information from part (b) dramatically reduces the sample size.

Q: 1+1(9)-20

A: The given expression is 1+1(9)-20 When we multiply any number by 1 the result is 1. So when we…

Q: (-5-20-100 to

A:

Q: 2(54-4)+86

A:

Q: 98-3y-4

A: topic - algebraic operations like terms are added and subtracted to like terms

Q: y 2 4 -2 --2 -4 74.

A: Given problem:-

Q: (b) Find all x-intercepts and y-intercepts. Check all that apply. | 3 | 2 O None intercept(s): y-…

A: (b) X-intercept: The x-intercept is the point on the graph where a line crosses the x-axis. The…

Q: 4+(9+2)=(10+ )

A:

Q: 8=3s-7s

A: Find the value os s from the given equation

Q: 5n+34=-2(1-7)

A: Consider the following expression: 5n+34=-21-75n+34=-2×-65n+34=125n=12-345n=-22n=-225n=-4.4

Q: 3-4+8

A: 3-4+8 =-1+8 =8-1 7

Q: 7x + 49

A:

Q: 2b(b+4)-b(b+5)

A:

Q: 8+9-10

A: Given that                                            8+9-10 here we will use BODMAS B= Bracket  O=…

Q: 7 - 6(1- 2x)

A: Topic:- algebra

Q: 64x3=-8

A:

Q: 3z-2+1-2+10

A: topic - algebraic operations

Q: 18-2(3+4)

A: The given expression is;

Q: (3+5)-(5-7)

A: 3+5-5-7

Q: 8- 6- +2+ -4- +8- to

A: DOMAIN: The values of x will define the domain of a function. RANGE: The values of y or f(x) will…

Q: 7-6+5

A: To evaluate the expression.7-6+5

Q: 2x-14

A:

Q: 8+34-362

A: Given expression is 8+34-362. We have to simplify the given expression. 8+34−362=42−362=−320 Hence,…

Q: 6x2(52-23)+67

A: Here we use BODMAS

Q: 8 + 4(8 - 2)2

A: Given information:The given expression is 8 + 4(8 - 2)2.

Q: 2х (b) 2 +1)

A:

Q: 4-(39x+6)=90

A: given equation is, 4 - (39x +6) = 90

Q: (22-9)+(8+14)

A: The given expression is: (22-9)+(8+14)

Q: -5+2(8-12)

A: Use PEMDAS rule to simplify.First we work with the parenthesis. In it 8-12=-4

Q: Зх3 — 2х2 —6х + 4

A: a. Factorization, 3x3-2x2-6x+4=3x3-2x2-6x-4=x23x-2-23x-2=x2-23x-2

Q: (3x-50)

A: From the given figure note that, x+3x-50+90=180. Obtain the value of x.…

Q: 8 + 7(42 - 3)

A: 8 + 7(42 - 3) = ?

Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.