1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
nlexa [21]
2 years ago
6

Cara is a high school student. On average, there are 26 students per class at her school, with a standard deviation of 3 student

s. What percentage of classes at Cara's high school will have between 20 students and 35 students?
A. 0.15%
B. 97%
C. 99%
D. 0.3%
Mathematics
1 answer:
aliina [53]2 years ago
8 0

Answer:

B. 97%

Step-by-step explanation:

20 students is -2 standard deviations away from the mean

35 is +3 standard deviations away from the mean

100 - 2.4 = 97.6

(2.4 is amount of data we are not using)

please refer to the standard deviation graph attached :)

You might be interested in
So I have a problem with a pie chart and I need to find the total amount of people surveyed using the amount of one portion of i
const2013 [10]
42% = 210 so, 
42/100=210/x
Cross multiply-
42x=21000
Divide by 42 on both sides and you get- 500
6 0
4 years ago
Plz help me asap plz i will mark you as brainlist
Masteriza [31]

Answer:

$420

Step-by-step explanation:

130x12=1560

165x12=1980

1980-1560=420

4 0
3 years ago
Read 2 more answers
What is the answer to this? 5(g+4)>15
Yuki888 [10]

Answer: g > -1

Step-by-step explanation: isolate by dividing each side that dosent contain a variable

6 0
3 years ago
Read 2 more answers
What is the LCM(Least common multiple) of 8 and 100
Sliva [168]
The LCM is 2, Because 2*4=8 and 2*50=100 :)
8 0
3 years ago
Read 2 more answers
The graph of a trigonometric function oscillates between y=1 and y=-7. It reaches its
madam [21]

Answer:

y = 4 sin(½ x) − 3

Step-by-step explanation:

The function is either sine or cosine:

y = A sin(2π/T x) + C

y = A cos(2π/T x) + C

where A is the amplitude, T is the period, and C is the midline.

The midline is the average of the min and max:

C = (1 + -7) / 2

C = -3

The amplitude is half the difference between the min and max:

A = (1 − -7) / 2

A = 4

The maximum is at x = π, and the minimum is at x = 3π.  The difference, 2π, is half the period.  So T = 4π.

Plugging in, the options are:

y = 4 sin(½ x) − 3

y = 4 cos(½ x) − 3

Since the maximum is at x = π, this must be a sine wave.

y = 4 sin(½ x) − 3

4 0
3 years ago
Other questions:
  • Graph the system of inequalities. Then use your graph to identify the point that represents a solution to the system.
    7·1 answer
  • If a tip of 15% is added to the food bill, what is the total on a food bill of $12.95?
    10·1 answer
  • Phil consumed 1,200 calories at lunch. He has a goal of burning at least 5% of those calories by walking on the treadmill. If wa
    9·2 answers
  • The cost of petrol rises by 2 cents a liter. Last week a man bought 20 liters at the old price. This week he bought 10 liters at
    15·1 answer
  • What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83
    15·1 answer
  • What is 481,026.03 in expanded form using powers of ten.
    5·1 answer
  • Write the equation of a line in slope intercept form of a line that has a slope of ¾ and contains (–8, 1).
    11·1 answer
  • What is the solution to 8t - 2 - 9t < 5?​
    8·1 answer
  • Mike needs his bathroom painted. The flat rate for the painting is $25 plus $5 for each hour that they spend painting. If the to
    8·1 answer
  • Question 2(Multiple Choice Worth 2 points)
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!