Mathematics Middle School

HELP!!!!!!! WILL GIVE BRAINLIEST!!!!!!!!!!!


A teacher surveyed her class after they had taken a vocabulary test. Eighteen of the students claimed they had studied at least one hour for the test. The remaining twelve students admitted that they had not studied for the test at all. The test results (expressed as a percent) for the two groups are shown below.

Studied: 87, 100, 94, 79, 92, 100, 95, 83, 89, 99, 100, 91, 89, 95, 100, 93, 96, 83
Did Not Study: 82, 72, 45, 91, 58, 83, 65, 87, 90, 77, 73, 89

Part 1: Calculate the mean of the group that did not study, rounded to the nearest tenth.
Part 2: Calculate the mean absolute deviation of the group that did not study, rounded to the nearest tenth.
Part 3: How many of the scores (from the group that did not study) are more than two mean absolute deviations from the mean?

Answers

Answer 1

Answer:

Didn't study: 76%

Mean absolute deviation: 11.2

Step-by-step explanation:

To find the mean, add all the scores from the people who didn't study and divide them by 12 (the total number of students who didn't study). You will get 76%To find the MAD, use the formula for MADTo answer the third, line them up in order. 45, 58, 65, 72, 73, 77, 82, 83, 87, 89, 90, 91. MAD is the average difference between the numbers. So, to find this answer, subtract two of the MAD's from the mean of 76%. 76-22.4 = 53.6. So, only one is more than two MAD's away from the mean of 76%.
Answer 2
92.5 is the answer for part 1

Related Questions

Kiley invited 10 students to her home, and 20 showed up. What percentage of the number invited showed up?

Answers

Answer:

200% of the number she invited.

Step-by-step explanation:

20/10 = 2

2 x 100 = 200

Answer:200%

Step by step explanation: 10 people=100% so 2x that will be 200%

a^2+3b÷c-2d
a=3 b=8 c=2 d=5

Answers

Answer:

9 is the answer to this question.

Step-by-step explanation:

a^2+3b÷c-2d

3^2+3x8÷2-2x5

9+24÷2-2-10

9+12-2-10

21-2-10

19-10

9

Answer:

11, I know you got the answer, but just in case you need an explanation..

Step-by-step explanation:

So, once you plug in the numbers it is... 3^2+3(8) divided by 2- 2(5). Then simplify the numbers... 9+24 divided by 2-2(5). Due to PEMDAS, division goes before addition or subtraction. So, 9+12-10. Simplify again ( it doesn't matter which property you use first..) Then 9+2 ( if you subtracted first ) and the final answer is 11.

i really need help please and thank you

Answers

Answer:

15 and 20

Step-by-step explanation:

Answer:

13 is answer

5=y-8

5+8=y

y=13

5<13-8

5<5

Which of these describes information that can appear in a consumer’s credit report?

a. The name of a store where the consumer pays cash for all purchases
b. The name of a company that gave the consumer a car loan two years ago
c. The amount of money the consumer will need to borrow in the next five years
d. The amount of money that the consumer loaned to a family member

Answers

I believe the answer is D. A credit report covers info on loan paying history. I was stuck between b and d but then realized it said the company gave a loan while your own credit history covers what you have paid or loaned. Hope this helps, have a nice day.
Either B or D but my best guess is B

sorry if i’m wrong :((

please help and explain

Answers

Answer:

No

Explanation:

The sum of the lengths of any 2 sides of a triangle must be larger than the length of the 3rd side.

Answer:

B. No

Step-by-step explanation:

two of the lengths added together need to be greater than the 3rd length.

40. Find the length of the hypotenuse, c in this triangle. Give the answer in the form c=__.

.

Answers

Answer:

c=5

Step-by-step explanation:

using pythagorean theorem, 3 squared plus 4 squared is 25. by finding square root of 25, you get 5

Answer:

5

Step-by-step explanation:

a^2 + b^2 = c^2

3^2 + 4^2 = 25

sqrt 25 = 5

What is the length of the strip of seaweed around the outside of the sushi?

Give your answer correct to one decimal place.

Answers

To find the circumference of a round object, you will take the diameter and multiply is by pi to get 78.5mm

Please me on this question!

Answers

Answer:

the variable is n.

the coefficient is 5.

the constant is 2.

the term is 5 and 2.

Step-by-step explanation:

Variable: N
Coefficient: 5
Constant: 2
I’m sorry but I have no idea what a term is :)

6. Find the volume of the sphere shown, giving your answer correct to 2 decimal places.

Answers

Answer:24,825.85

V:4/3x3.14xr^3

V:4/3x3.14x5,929.741

V:4/3x18,619.38674

V=24,825.84898

The Volume is approximately 24,825.85

I did the math as well, and it was 24,825.85

Anna is 3 years older than her sister Grace. Write an expression to show Anna's age.

Answers

Answer:

Gx+3=A

Step-by-step explanation:

Yx+3=A uuuiyuyhyhhgvvfcfff

HELP MEEE PLEASE ILL MARK BRIANLIST!!!!

Answers

The points in order from top to bottom are :

F
E
C
H
I
a) -x= F
the start of the question gives x=-2 which then you flip the signs to get -x=2. The point that corresponds with 2 is F
b) |-1.5|= E
When a negative number is put in absolute values it becomes positive so in this case we would be looking for the point which had a value of 1.5 which is point E
c) -4= C
-4 is corresponding to C
d) |5|= H
As 5 is already positive the absolute values don’t matter. H corresponds with the number 5
e) |-6|=I
Similar to (b) the number is negative so the absolute values would make it positive and positive 6 is located at I

Hopefully this helped :)

JJ’s Fitness Club offers two different fees for their yoga classes. Club members are charged a one-time membership fee of $24 and pay $3 per class. Non-members pay $7 per class. How many classes result in the same cost for a member and non-member?

Answers

Answer:

So the answer is 13 classes member and 9 non member

Step-by-step explanation:

so you gotta do 24 + 3x = 7y ok?

and x equals 13 so 39 + 24 = 63

and non member is 7x = 63

x = 9

Hope I helped :D

the answer is 5x. Step One: Where x equals the number of aerobics classes,
Members Nonmembers
Cost in Dollars 10+3x 0+5x
Step Two: We create an equation to solve for x.
Member Cost=Nonmember Cost
10+3x= 0+5x
Step Three: Solve for x:
10+3x= 5x Subtract 3 from both sides
10=5x-3x Combine like terms
10=2x
5=x

help me please thanks

Answers

Answer:

x  <  − 5

The notation would be ( − ∞ ,  − 5 )

On the graph, you would put an open dot on -5 and an arrow continuing down it

same answer as the person who answered

PLEASE HELP ME PRETTTY PLEASE IM BEGGING

Answers

Answer:

Least to Most Likely:

In this order:

Honor (1/10=10%)

Simple (30%)

Bonus (3/5=60%)

Answer: honor tile, then simple tile, then bonus tile.

Explanation:

Let's get all the probabilities to become a fraction with a denominator of 10 so it will be easier to compare

simple tile - 30% equals 0.3=3/10

honor tile - 1/10 is already good

bonus tile - 3/5=6/10

1/10 is the least likely, followed by 3/10, and 6/10 is the most likely

honor tile, then simple tile, then bonus tile.

PLZ PLZ PLZ PLZ PLZ PLZ HELP ME I DONT UNDERSTAANDDDD I NEED ANSWERS SOME OF THEM I ACCIDENTLY CLICKED ON WHEN I TOOK THE PICTURE

Answers

Answer:

c the 1st

a the 2nd

b the 3rd

c the 4th

Im pretty sure number 6 is 1/5 because there are 5 cans. And if you pick one then there will be a 1/5 chance of choosing the same can. Does this make sense?

Find the area. Be sure to use the correct units.

Answers

Answer:

96 m

Step-by-step explanation:

16m x 12m= 192

192/2=96

Answer:

128 m

Step-by-step explanation:

In a square all the sides are the same. Since a triangle is half of a square, we find the area of a square then divide it by 2. So if one side is 16, we multiply 16x16 and get 256. 256/2=128

Sue earns $6 an hour walking her neighbor's dog.

Part A: Create two variables and determine which is dependent and which is independent for this situation. (4 points)

Part B: List three ordered pairs to show the values of the two variables. (3 points)

Part C: Write an equation to represent the relationship between the two variables. (3 points)

don't use the website Https://questioncove.com/updates
it is restricted for me please copy and paste the answer.
this is all the info I have for you.

Answers

Answer:

Step-by-step explanation:

A here x is dependent and y is independent

B first

x-6

y-1

second

x-12

y-2

third,

x-18

y-3

C 6x+y

help me please also please dont skip over this

Answers

Answer:

The answer is 20.25pi.

Step-by-step explanation:

I was gonna add an explanation but I don't have the symbols on my keyboard.

Answer:

I believe it is 6π inches

Step-by-step explanation:

Which graph shows the best line of fit for the scatter plot?

Answers

A is the correct answer
A is the answer to this hope this helps

35. Find the area of the shaded region in the following figure, correct to one decimal place.

Answers

Answer:

Step-by-step explanation:

Answer:

I think the answer is 96.45cm

Step-by-step explanation:

The radius = 13 cm, the area of the semi-circle is equal to (pi x 13^2)/2 which is equal to 265.45

The area of the triangle is (26 x 13)/2 = 169

So the area of the shaded area is 265.45 - 169 = 96.45cm

Help meeeee plsssss last oneeee

Answers

36% is the right answer
36% is the correct one

A coin is tossed and a single 6-sided number cube is rolled. Find the probability of landing on the heads side of the coin and rolling a 3 on the number cube.

Answers

well we have a 1/2 chance at rolling a heads and a 1/6 chance at rolling a number 3

Step-by-step explanation:

1/2 x 1/6 = 1/12 1/12 is the answer I believe

Geoffrey wants to grow some tomatoes in four large planters. He wants each planter to have a volume of 320 cubic feet, but he wants them all to be different. Show four different ways Geoffrey can make these planters, and draw diagrams with the planters’ measurements on them. I’ll give branliest

Answers

Answer:

I did have this question on my test.

Step-by-step explanation:

Planter A:

V=L x W x H

= 10ft x 8ft x 4ft

=320 cubic feet

Planter B:

V=L x W x H

= 16ft x 20ft x1ft

=320 cubic feet

Planter C:

V=L x W x H

=32ft x 5ft x 2ft

320 cubic feet

Planter D:

V=L x W x H

=8ft x 8ft x 5ft

320 cubic feet

who ever gets this answer right will get a brainlest
options:
Angle
line
line segment
point
ray
none of these

Answers

Answer:

The answer is a Line. (2nd option)

Step-by-step explanation:

The answer is a line segment

Circumference (rounding)
Your gonna need to round to the nearest tenth to find the answer.

Answers

C = 2πr
r = 12.1
C = 2π(12.1)
C = 76.03 = 76.0 feet

Answer:

76

Step-by-step explanation:

To find the circumference, ue the equation C=2·π·r

C=2·π·12.1

C=76.03

C=76 (rounded)

Arielle grade in the second Marking Period increased by 48.2%. If G represents Arielle Grade in the First Marking Period, What is Arielle Grade in the Second Marking?

Answers

Answer:

0.482

Step-by-step explanation:

Use the given functions to set up and simplify sec(ond).

48.2% = 0.482

G = 0.482

sec(ond) = 0.482

0.482.......................

can someone pls help im rlly bad at circle graphs i will give brainliest!!

Answers

The answer is 87

Explanation:
there are 150 students
If you add 28% from spaghetti and 30% from pizza you get 58%

now, 58% is 0.58 in decimal form, so then you multiply 150 times 0.58, and there is your answer! I hope this helped!
16 students

30+28=58
12+18+12=42

58/150 42/150
58-42=16

The leaders of two youth sports teams randomly select five members of each team and record their ages, as shown.
Team A: 16, 13, 12, 16, 13
• Team B: 10, 13, 16, 16, 10

Answers

Answer: A

Step-by-step explanation:

D) They have less variability which makes the mean higher (14)

Martin High School has a total of 1,070 laptops and tablets available throughout the campus for student use. The number of laptops is 20 more than twice the number of tablets. How many tablets are available for student use?


a) 250
b) 350
c) 700
d) 720

Answers

350 tablets tablets tablets

350 tablets available

What is the decimal equivalent of 8%

Options: 0.8
8.0
0.08
0.008

Answers

answer:

b) 0.08

step-by-step explanation:

to find which answer choice was correct i turned 8% into a fraction-

**i did this by putting 8 over 100-

8/100 from here i treated the fraction as if we were dividing

so if you wanted to you can re-write the fraction as 8÷100

8÷100

=0.08

0.08=8%=8/100

0.08 is the correct answer

good luck :)

i hope this helps

brainliest would be highly appreciated

have a nice day!

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