7) In 2014, the attendance at Jefferson School's School Festival was 650. In 2015, the attendance was 575. What was the percent change in attendance from 214 to 2015? Round to the nearest tenth. * A 11% B 12% decrease C 13% D 14%

Answers

Answer 1

Answer: 575/650 = 88% (round down)

100 - 88 = 12%

Letter B

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Which of the following expressions has the greatest value when x=5? show how you arrived at your choice.2x^2+7

x^3-5/3

10x -2/ x-3

Answers

Answer:

2x^2+7

Step-by-step explanation:

Let x=5

2x^2+7

2 ( 5)^2 +7 = 2*25 +7 = 50+7 = 57

(x^3-5)/3

(5^3 -5)/3 = (125-5)/3 = 120/3 = 40

(10x -2)/ (x-3)

(10*5-2)/(5-3) = (50-2)/(2) = 48/2 = 24

A study conducted to assist the impact of caffeine consumption, smoking, alchohol consumption, and physical activity on cardiovascular disease. Suppose that 40% of participants consume caffeine and smoke. If 8 participants are evaluated what is the probability that: A. Exactly half of them consume caffene and they smoke?

Answers

Answer:

8.4

Step-by-step explanation:

What is f ( 1/3)? When the function is f(x) =-3x+7

Answers

Answer:

f(1/3) = 6

Step-by-step explanation:

f(x) =-3x+7

Let x = 1/3

f(1/3) =-3*1/3+7

= -1 +7

= 6

Answer:

f(1/3) = 6

Step-by-step explanation:

The function is:

● f(x) = -3x+7

Replace x by 1/3 to khow the value of f(1/3)

● f(1/3) = -3×(1/3) +7 = -1 +7 = 6

When designing and writting questions for a survey , which of the following are issues that you need to pay attention to?A. Wording of questions
B. Order of questions
C. Sensitive questions
D. All of the above

Answers

Answer:A

Step-by-step explanation:

The organizers of a convention are drawing lots to pick the host city for the event. Nine city names are written on differentpieces of paper and placed in a bowl. The possible outcomes of drawing a name from the bowl are shown below.
Chicago
Seattle
Orlando
Dallas
Atlanta
Austin
Oakland
Phoenix
Cleveland
What is the probability that Cleveland or Dallas is picked?
OA.
OB.
OC.
DIN COIN
OD

Answers

The probability of Cleveland or Dallas getting picked is $(2)/(9)$ .

What is probability?

'Probability means possibility. It is a branch of mathematics that deals with the occurrence of a random event. The value is expressed from zero to one.'

According to the given problem,

Total number of city names = 9

Favorable events = 2 [ Cleveland, Dallas]

Probability = $(Favorable events)/(Total number of events)$