Answers
Answer:
r = 20
Step-by-step explanation:
4r - 5 + 105 = 180
4r + 100 = 180
4r = 80
r = 20
Related Questions
13. Jessica has taken 8 quizzes. The mean of her scores is 92. Her first 6 scores are shown.
96, 90, 88, 92, 94, 90
If Jessica got the highest score possible on her seventh quiz, what score did she get on her
eighth quiz? What would be her median score Show your work and explain your reasoning.
Answers
Answer: Median= 91; 8th quiz score=86
Step-by-step explanation: The sum of the scores is 8×92=736. Subtract the 6 given scores and then a 100 for the seventh quiz to find the score she got on the 8th quiz, this is an 86. Now that you have all the scores, arrange them all in the least to greatest order and find the average of the middle two numbers (median), which is 91!
3.8 cm 1.1 cm 2.2 cm Estimate the surface area of the rectangular prism. A) 28 cm B) 32 cm2 64 cm 81 cm
Answers
Answer:
28 i guess
Step-by-step explanation:
surface area of rectangular prism is
2*(w*l+h*l+h*w)
h is height
l is length
w is width
so if you substitute each with the numbers you will get 29.92
What is the difference between Independent and Dependent events?
A. In Dependent - each event relies on the event before it.
B. They are the same - independent just means more events are occurring.
C. I. independent - each event relies on the event before it.
D. They are the same - dependent just means more events are occurring.
Answers
Answer:
C is the answer
Step-by-step explanation:
I took the test and got it right
Mendeleev was the first to organise elements based on their similarities *
True
False
Answers
Answer: True
Step-by-step explanation:
Which is the best example of selecting a systematic random sample?
Two distinct groups are formed from members of a population based on some characteristic, and a random
sample of 50 people is selected from each group.
Members of a population are divided into representative groups, and then every 3rd group is selected until a
sample of 100 people is formed.
Members of a population are listed in order of birthday, and every 5th person is selected until a sample of 100
people is formed.
The first 100 people to respond to a call for participants are selected.
Answers
Using it's concept, it is found that the best example of a systematic random sampling is given by:
Members of a population are listed in order of birthday, and every 5th person is selected until a sample of 100 people is formed.
How are samples classified?Samples may be classified as:
Convenient: Drawn from a conveniently available pool.Random: All the options into a hat and drawn some of them.Systematic: Every kth element is taken. Cluster: Divides population into groups, called clusters, and each element in the cluster is surveyed.Stratified: Also divides the population into groups. Then, a equal proportion of each group is surveyed.In this problem, we want a systematic sample, that is, every kth person(not group), hence the correct option is:
Members of a population are listed in order of birthday, and every 5th person is selected until a sample of 100 people is formed.
More can be learned about systematic random sampling at https://brainly.com/question/24466382
Answer:
C. Members of a population are listed in order of birthday, and every 5th person is selected until a sample of 100 people is formed.
Step-by-step explanation:
9-3*1/3*98=
6-*87/8+85647-552=
254+968*8
Answers
Answer:
don't you have a calculator? just use that
Pls help thank you :)
The dot plot represents the number of apples picked by a family. Explain how the outlier of the data affects the statistical summary of the data.
Select the answers from the drop-down menus to complete the statements.
The mean apples picked
increases or decreases or does not change?
because of the outlier.
The median apples picked
increases or decreases or does not change?
because of the outlier.
The range
increases or decreases or does not change?
because of the outlier.
Answers
Answer:
Decreases, decreases, increases
Just took the test
Step-by-step explanation:
If 10 is p percent of 21 , p is a number between
Answers
Answer: 47 and 48
Step-by-step explanation: 10/21 ≈0.476190476 and multiplied by a 100 to get a percentage is ≈ 47.6 which is in between 47 and 48. Hope this helps, and have a great day!
Answer: 47%
Step-by-step explanation:
half of 20 is 10 so half of 21 is 10.5
What is the slope of the line through? (-4, 2) and (3, -3)?
Answers
Answer:
c. -5/7
Step-by-step explanation:
Rearrange the equation so uuu is the independent variable.
-12u+13=8w-3
Answers
Answer:
u = 8w-16 /-12 or = - 8w-16/12 both mean the same due to the a/-b- = -a/b rule. Then you can factor out the rest. note the fnew subtraction changes mean the same as - (a/b) and should show without brackets as a centre pointing whole fraction subtraction sign.
Step-by-step explanation:
-12u -13 = 8w-3
-12u+13 -13 = 8w-3-13 Eliminate -13 by +13 both sides
-12u = 8w-16 So you are left with one value left side.
-12u/-12 = 8/-12 - 16/-12 Then divide all values by -12 to find value for u and keep the subtraction as 8 never had subtraction sign and no multiplication .
u = 8w-16 /-12 Then you can factor out the rest
This has made u the independent variable then you have a choice to continue showing or ignore u; as u =
= - 8(w-2)/12 Step 1 Factor with subtraction change from -12 to - central fraction
= - 2(w-2)/3 Step 2 Simplify with new minus sign for central fraction to replace a/-b
Answer:
The answer is W = -3/2u + 2
Step-by-step explanation:
Look at attachment:
Hope this helps! :)
A company issues a general knowledge test to its potential employees as part of its recruitment procedures. The company does not invite the lowest scoring 20% back for a second interview. If the scores on this test are normally distributed with a mean of 60 and a standard deviation of 17. What mark (to the nearest whole number) must a candidate achieve in order to secure a second interview
Answers
Answer:
46
Step-by-step explanation:
Given :
Lowest scoring 20% ; this corresponds to score below (1 - 0.2) = 0.8
Mean, m = 60
Standard deviation, s = 17
Zscore = (x - mean) / standard deviation
Therefore, the Zscore for the bottom 20% equals ; P(x > Z) = 0.8
Using a Z probability calculator ;
The Zscore = -0.842
Therefore to Obtian the score, x
Zscore = (x - mean) / standard deviation
-0.842 = (x - 60) / 17
-0.842 * 17 = (x - 60)
-14.314 = x - 60
-14.314 + 60 = x
x = 45.686
To secure a second interview, candidate must score, 46 (nearest whole number).
The marks (to the nearest whole number) must a candidate achieve in order to secure a second interview is 46 and this can be determined by using the z-score formula.
Given :
A company issues a general knowledge test to its potential employees as part of its recruitment procedures.The company does not invite the lowest scoring 20% back for a second interview.If the scores on this test are normally distributed with a mean of 60 and a standard deviation of 17.Let 'x' be the mark must a candidate achieve in order to secure a second interview.
So, through the z-score formula, the value of 'x' can be determined.
[tex]\rm z_{score} = \dfrac{x-mean}{Standard\; Deviation}[/tex]
[tex]\rm -0.842 = \dfrac{x-60}{17}[/tex]
[tex]17\times -0.842 = x - 60[/tex]
x = 60 - 14.314
x = 45.686
So, the marks (to the nearest whole number) must a candidate achieve in order to secure a second interview is 46.
For more information, refer to the link given below:
https://brainly.com/question/17756962
Rachel downloaded a movie at a constant speed.
After she downloaded 40% of the movie, the remaining download time was 40 seconds.
After she downloaded 40 mb, the remaining download time was 16 seconds.
Compute the total size of the movie (in mb) rounded to the nearest mb.
Answers
Answer:
The total weight of the file was 64 mb.
Step-by-step explanation:
Given that Rachel downloaded a movie at a constant speed, and after she downloaded 40% of the movie, the remaining download time was 40 seconds, while after she downloaded 40 mb, the remaining download time was 16 seconds, to determine the total size of the movie rounded to the nearest mb, the following calculation must be performed:
100 - 40 = 60
60% = 40 seconds
40 mb = 16 seconds left
16/40 = 4/10
60/40 = 1.5
1.5% for every 1 second of download.
16 x 1.5 = 24
40 + 24 = 64
Thus, the total weight of the file was 64 mb.
Can smart people solve this geometry problem with all work
Answers
Answer:
Step-by-step explanation:
Scott wants to put soil in his garden shown below. If soil comes in bags that fill 3 square yards each, how many bags of soil should Scott buy
Answers
Answer:
5
Step-by-step explanation:
Becuase his backyard is 15 square yards.
what is the sum of 9/10 and 1/10
Answers
Answer:
1
Step-by-step explanation:
9/10+1/10=(9+1)/10=10/10=1
Answer:
1
Step-by-step explanation:
you can add the two fractions since they have a common denominator. 9/10 + 1/10 = 10/10
any number divided by itself is equal to 1
Find the value of x.
6
14
3x-12
A
o
21
x = [?]
Enter
Answers
Answer:
Bueno esto es lo que yo calculo
3×‐12
3(×‐4)
3 14x12
A calcule
A 12×3 =14
es lo que me calcula
Answer:
7Step-by-step explanation:
14/6 = 21 / 3x - 12
first, cross multiply
14 (3x - 12) = 6*21
Remove the brackets
42x - 168 = 126
Add 168 to both sides
42x = 168 + 126
Combine
42x = 294
Divide by 42
x = 294/42
x = 7
Laura wants to know the volume of her gold ring in cubic centimeters. She gets a rectangular glass with a base 7 cm by 4.5 cm and fills the glass 8.8 cm high with water. Laura drops her gold ring in the glass and measures the new height of the water to be 9.2 cm.
Answers
Answer:
12.6 cm
Step-by-step explanation:
14^-3 x 14^12
positive exponents
Answers
Answer:
20661046784
Step-by-step explanation:
I couldn't get the pos exponent but hopefully this helps
Zafira drinks 4 fluid ounces of orange juice each morning. Which equation can be used to find m, the number of mornings it will take her to drink 4 cups of orange juice.
Answers
Answer:
Step-by-step explanation:
m = (4×8) ÷ 4
m = 8 mornings
Please help me please hurry
Answers
Answer
899
Step-by-step explanation:
99
How many 1- foot rulers laid end to end would it take to equal 9 yards?
Answers
Answer: 27
Step-by-step explanation: hope this help
Which story problem COULD not be solved with a expression 3 1/2 x 1/3
Answers
Answer:
C
Step-by-step explanation:
Instead of how much she should've had left it should've asked how much did she use.
convert 32.1% to an equivalent decimal.
Answers
Answer:
0.321
Step-by-step explanation:
32.1 / 100 = 0.321 = [tex]\frac{321}{1000}[/tex]
The decimal equivalent of 32.1% is 0.321.
Converting a percentage to a decimal is a breeze.
To convert 32.1% to its decimal equivalent, all you have to do is divide the percentage value by 100.
In this case,
it would be 32.1 ÷ 100 = 0.321.
So, the decimal equivalent of 32.1% is 0.321.
Converting percentages to decimals is a simple concept that allows us to represent numbers in different form.
It's like translating one language into another.
By dividing the percentage by 100, we scale it down to a decimal representation.
Learn more about the percent visit:
https://brainly.com/question/24877689
#SPJ6
William says that 15years from now his age will be 3 times his age 5 years ago if x represents williams present age complete the following sentences
Answers
Answer:
Is the question complete
Graph the line.
Y= 4/3 x
Answers
Answer:
hope this helps :)
Step-by-step explanation:
Tristian has 35 rock songs, 50 dance songs and 15 rap songs on his play list. If his music player randomly selects a song, what is the probability that it is a dance song?
Answers
Answer:
1/2
Step-by-step explanation:
35+50+15 = 100
probability of the dance song = 50/100 = 1/2
Answer:50%
Step-by-step explanation:
35+15+50=100
50 divided by 100 is 0.5 or you can do it as a fraction and get 50/100
40 POINTS !! 40 POINTS !!
PLEASE HELP , DONT SKIP !
NO LINKS OR FILES.
Answers
Answer:
2 0 4 3 1.
Step-by-step explanation:
u mean 10 points
Three gears are arranged as shown in the figure. Find angle θ.
Answers
Answer:
Answer: 111∘
Step-by-step explanation:
9=7+a a+8=b+5 value of b
Answers
What is the domain of the function on the graph?
Answers
Answer:
x is greater than or equal to -3
[-3, infinity)
{x| -3 less than or equal to x les than infinity}