MATHEMATICS HIGH SCHOOL

Which of these is an example of discrete data?A. Rides in an amusement park
B. Temperature
C. Distance
D. Area of a room

Answers

Answer 1
Answer: Discrete data is numerical but only has a limited number of values.

In this case, the number of rides in an amusement park would be discrete because you cannot have, for example, 5.6 rides.

The correct answer is A.
Answer 2
Answer:

Answer:

C.banans in a bunch

Step-by-step explanation:

apexs

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What is

When a grizzly bear hibernates, it's heart rate drops to 10 beats per minute, which is 20% of its normal value. What is a grizzly bears normal heart rate when not hibernating?

Answers

Answer:

His normal heart rate is 50 beats per minute.

Step-by-step explanation:

Since when it is hibernating it beats 10 times per minute and that is 20 % of the normal volume we can use a rule of 3 to find his normal herat rate. If 10 times per minutes is 20% of its normal volume then x times per minutes is 100%. So we have:

10 -> 20%

x -> 100%

10/x = 20/100

20x = 1000

x = 50 beats per minute

Answer:

50 beats per minute

Step-by-step explanation:

To find the heart hate of a grizzly bear when not hibernating, we need to get the heart rate when hibernating (10 beats per minute) and make it equal to 20% in a rule of three, where we want to know the 100% value (normal heart beat rate):

10 beats per minute -> 20%

X beats per minute -> 100%

10/X = 20/100

X = 100 * 10/20 = 50

Solve for x:

-42 = -7x

Answers

Answer:

x=6

Step-by-step explanation:

-7x= -42

x= -42/-7

x=6

Answer:

x=6

Step-by-step explanation:

-42= -7x divide -7 on both sides

6=x negatives cancel out

x=6 flip (not necessary but teachers like it this way)

A population of middle school students contains 160 sixth graders, 180 seventh graders, and 140 eighth graders. Nine seventh graders were part of a random sample of the population chosen to participate in a survey. For the sample to accurately represent the population, about how many sixth graders should be chosen? A.7 B.8 C.14 D.16

Answers

About 8 sixth graders should be chosen.

What is direct proportion?

Direct proportion is a type of proportionality relationship. For direct proportion, as one value increases, so does the other value and conversely, as one value decreases, so does the other value.

Given that, A population of middle school students contains 160 sixth graders, 180 seventh graders, and 140 eighth graders. Nine seventh graders were part of a random sample of the population chosen to participate in a survey.

We know they are in direct proportion,

Number of sixth graders students = 160

Number of seventh graders students = 180

Number of eighth graders students = 140

If 9 seventh graders were part of a random sample of the population chosen to participate in a survey.

Let the number of sixth graders should be chosen to be 'x'.

Since, there will be direct proportion.

180/9 = 160/x

20 = 160/x

x = 160/20

x = 8

Hence, About 8 sixth graders should be chosen.

For more references on direct proportion, click;

brainly.com/question/28730073

#SPJ6

Answer:B-8

Step-by-step explanation:BECAUSE it was for me

Find the mean, median, and mode of the data set:. 15, 16, 21, 23, 25, 25, 25, 39.

Answers

The question is 15,16,21,23,25,25,25,39
Mode is most so the answer is 25

How many and what type of solutions?(1.) 2k^2 = 9 + 3k

no real solutions


one real solution


two rational solutions


two irrational solutions

Answers

Hello,

2k²-3k-9=0
==>k=3 or k=-3/2

Answer C two rational solutions.

3-3x6+2= -13 ? Is that correct

Answers

If x is a sign of multiplication, then 3-3x6+2 = -13 is incorrect.

The order of mathematical operation is PEMDAS.

1st operation to perform is the numbers inside a PARENTHESIS
2nd operation to perform is the number with EXPONENTS
3rd operation to perform is MULTIPLICATION
4th operation to perform is DIVISION
5th operation to perform is ADDITION
6th operation to perform is SUBTRACTION.

3-3x6+2 = -13 

operation present are multipication, addition, and subtraction.

3-3x6+2 = -13

first, do multiplication : 3 - 18 + 2 = -13
second, do addition: 3 - 20 = -13
third, do subtraction: -17 = -13  ANSWERS ARE NOT EQUAL. THUS, INCORRECT.
No. Add before you subtract.
3x6 = 18 Multiply first
18+2=20 Addition
3-20= -17 Subtraction is last
-17 is answer
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