Answer:
The greatest common factor of 6 and 36 is
6
Hope it will help :)
Answer:
6
Step-by-step explanation:
An ecological group suspects tuna are consuming dangerous levels of copper in a region of the world. Dangerous levels of copper are classified when they reach beyond 5.7 parts per million. A random sample of 21 tunas in the region were tested and the data is shown in the stemplot.
Part A: What proportion of the tuna in the sample have dangerous levels of copper in their systems? (4 points)
Part B: Construct and interpret a 98% confidence interval for the mean copper levels of the tuna if the sample of 21 tuna has a mean copper level of 4.77 parts per million and standard deviation of 1.16 parts per million. (6 points)
Answer:
a. 5 out of 21
b. (4.1811, 5.3589)
Step-by-step explanation:
a. We can see from the stem plot that 5 out of the 21 tunas have dangerous levels of copper in their system because the copper level reached over 5.7, and the problem states "Dangerous levels of copper are classified when they reach beyond 5.7 parts per million"
b. How to find it on calculator
Step 1: [stat]
Step 2: go to [tests]
Step 3: go down to [7: zinterval]
Step 4: make sure input is on [stats]
Step 5: input the following
: 1.16
X (with the line above it): 4.77
n: 21
c-level: .98
The solution is :
A.) The required proportion is 5/21=0.2381
B.) 98% confidence the true copper level (in parts per million) lies in the interval (4.13, 5.41).
What is standard deviation?A standard deviation (or σ) is a measure of how dispersed the data is in relation to the mean. Low standard deviation means data are clustered around the mean, and high standard deviation indicates data are more spread out.
here, we have,
A) From the stem-leaf plot, we see that out of 21 tunas, 5 have dangerous levels of copper since the levels go beyond 5.7 parts per million. The required proportion is 5/21=0.2381
B) Given the sample mean is {x}=4.77, sample standard deviation s=1.16 and the sample size is n=21.
Since the population standard deviation is not known, we use t-distribution.
So the 98% CI for mean is
4.77 ± t{1-0.02 /2,20} x 1.16/sqrt(21) = (4.13, 5.41)}
We are sure with 98% confidence the true copper level (in parts per million) lies in the interval (4.13, 5.41)
Learn more about standard deviation here:
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Please help i need to help
Answer:
4.25
Step-by-step explanation:
Step 1: 23-(17-12)²+6.25
Step 2: 23-5²+6.25
Step 3: 23-25+6.25
!! HELP IM IN 7TH GRADE AND M LEARNING 9TH AND 8TH GRADE MATH!!
QUESTION~
If f(x) = 2|x| is graphed on a regular
coordinate grid, does the graph
form an acute, right, or obtuse
angle at its vertex?
Answer:
The vertex forms an acute angle.
what is the y-intercept of the line perpendicular to the line y = 4/3 x + 1 that includes the point (4, 1)
Find the circumference and area of the circle to the nearest hundredth. Use 3.14 for . Round to the nearest hundredth if necessary.
The circumference of the circle is about ____ cm.
The area of the circle is about ____ cm2.
Please answer!
Answer:
The circumference of the circle is about 166.42 cm.
The area of the circle is about 2205.07 cm².
Step-by-step explanation:
Diameter = 53 cm
Radius = r = 53cm/2 = 26.5 cm
π = 3.14
Circumference = C = 2 π r
C = 2(3.14)(26.5cm) = 166.42cm
The circumference of the circle is about 166.42cm.
Area = A = π r²
A = (3.14)(26.5cm)² = 2205.07 cm²
The area of the circle is about 2205.07 cm².
If Izzy has 43 minutes to do her work and her brother has 30 because he started before her how many minutes they would have together do you have to multiply to find it out
Answer:
you dont have to multiply
Step-by-step explanation:
because the keyword "Have together" in math indicates it is an adding problem
Write 6.789 in word from
Answer:
six- and seven hundred eighty nine hundredths
Step-by-step explanation:
6 is the whole number
789 is ow many hundreths there is
Linda started taking piano lessons. She had to practice 1 3/4 hours each day. If after only 8 days Linda decided she wanted to stop, how many hours did she take lessons
Answer:
If you mean how many hours did she practice because it didn't say how long her lessons are then the answer is 14 hours
Step-by-step explanation:
1 3/4 = 1.75
8 times 1.75 = 14
<A and <B are vertical
angles. if m<A =(3x+13)° and <B=(5x+9)° then find the measure of <A
Answer:
Step-by-step explanation:
3x+13 = 5x+9
2x = 4
x = 2
A = 3x+13 = 19°
A bag contains 1 green, 4 red and 5 yellow balls. Two balls are selected at
random. Find the probability if there is no replacement of P(1 green and 1
yellow).
Answer:
The probability is 1/18.
Step-by-step explanation:
There are 10 balls in total. Let's start with the probability of just the green. There is 1 green ball.out of 10 balls total, so the probability of pickin just the green one would be 1/10. Since we aren't replacing the balls after we choose them, the total number of balls is now 9. now the probability of picking one yellow ball out of the nine balls left is 5/9 because there are 5 yellow balls. To get the probability of the green and yellow balls picked, we multiply the individual probabilities to get the actual probability of choosinf one green and one yellow ball without replacement. So multiply 1/10×5/9= 5/90, simplified to 1/18.
Two balls are selected at random, the probability of choosing two balls 1 green and 1 yellow without replacement is 1 / 20
Probability-based problem:What information do we have?
Number of green balls = 1
Number of red balls = 4
Number of yellow balls = 5
Total number of balls = 1 + 4 + 5 = 10
Probability of green ball = 1 / 10
Probability of yellow ball = 5 / 10
Probability if there is no replacement of P(1 green and 1 yellow) = (1/10)(5/10)
Probability if there is no replacement of P(1 green and 1 yellow) = 1 / 20
Find out more information about 'Probability'.
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The high temperatures for a week are shown.
15°, 34°, 17°, 15°, 16°, 8°
Which measure of center, mean or median, would BEST represent the data?.
The median, 15.5, is best because it represents the middle most value of the data in the set.
The mean, 17.5, is best because the center of this data set is affected by outliers.
The mean, 17.5, is best because it is the average of all the values in the data set.
.
The median, 15.5, is best because the center of this data set is affected by outliers.
Answer:
i think it is a because my teacher just went over it
Step-by-step explanation:
hello
How might a victory at Gettysburg have benefited the confederacy? Plz I need this fast!!!! I will mark brainist!!!
Answer:
It might have convinced European nations to align with the South.
Step-by-step explanation:
i did this one twice
Help&EXPLAIN
Don’t use for points or I’ll take it back and report
Answer: 6
Step-by-step explanation:
Answer:
x = 105 degrees
Step-by-step explanation:
180 degrees total
180 - 75 = 105
x = 105 degrees
What shape is this cross-section?
A. Rectangle
B. Pyramid
O C. Trapezoid
D. Triangle
If you're referring to the actual 3D shape, that would be a rectangle. If you're referring to the shape in the middle, it would be a Trapezoid.
Answer:
A. Rectangle
Step-by-step explanation:
It is a rectangle, not any of the other shapes listed in the other answer choices.
Hope this helps! :)
Find the degree of the term.
- 3x^3
The degree of – 3x^3 is
Answer:
the degree of -3x^3 is 3
Step-by-step explanation:
the exponent is 3
someone help solve this! f + 1 1/2 = 4 1/4
f= ?
Answer:
2 1/4
Step-by-step explanation:
Calcul
A train travels 60 miles in 90 minute
Calculate the train's average speed.
Answer:
Step-by-step explanation:
Speed per min = 60 ÷ 90 = 0.66 miles
Answer:
0.66 miles/1 min
Step-by-step explanation:
60/90=0.66/1
28 orders in 4 days = orders per day
Answer:
7 orders per day
Step-by-step explanation:
28/4=7
Answer:
7
Step-by-step explanation:
divide 28 / 4 = orders per day
Ron walked 8/10 mile from his grandmothers house to the store. Then he walked 9/10 mile to his house. Use benchmarks to estimate how far he walked altogether.
Answer:
1 7/10 miles
Step-by-step explanation:
Kevin can travel 22 1/2 miles in 1/3 hours. What is his average speed in miles per hour
Answer:
67 1/2
Step-by-step explanation:
22 1/2*3
Tyler poured 15 cups of water into 2 equal sized bottles and filled each bottle. How much water was in each bottle?
Answer:7.5
Step-by-step explanation:
you divided 15 into 2
Answer:
7 and a half
Step-by-step explanation:
Divide 2 and 15 toet 7 and a alf
Which expression is equivalent to
Answer:
C
Step-by-step explanation:
16 times 0.5x equals 8x.
16 times -0.75 equals -12y, so this means A and D are incorrect.
16 times 2 is 32, so this means that B is wrong, for you must multiply each number in the parentheses by 16.
Hope that helps :)
Mr. Kershner is a school nurse. He uses, on average, 24 self-adhesive bandages during each spring month: March, April, and May. He also knows that in June there are several field days and he will need 4 times the number of bandages for that month.
If the bandages cost 3 cents each, what is his total cost for March through June?
If the bandages cost 3 cents each, Mr. Kershner's total cost for bandages from March through June is $5.04.
What is an arithmetic operation?
Arithmetic operations is a branch of mathematics, that involves the study of numbers, the operation of numbers that are useful in all the other branches of mathematics. It basically comprises operations such as Addition, Subtraction, Multiplication, and Division.
The number of bandages used by Mr. Kershner in March, April, and May is 24 bandages each month, for a total of 24 x 3 = 72 bandages for those three months.
In June, he will need four times as many bandages as in the other months, for a total of 4 x 24 = 96 bandages.
The total number of bandages used from March through June is 72 + 96 = 168 bandages.
The cost of each bandage is 3 cents, so the total cost for 168 bandages is 168 x 3 = 504 cents, or $5.04.
Therefore, Mr. Kershner's total cost for bandages from March through June is $5.04.
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If the diagonals of a shombus are 10 and 24, find the area of the rhombus
A
120 units
B
240 units
С
60 units
D
180 units
100 point question. I attached a screenshot of the problem.
Answer:
9
Step-by-step explanation:
WILL GIVE BRAINIEST TO THE FIRST PERSON WHO ANSWERS THEM ALL CORRECTLY, BUT U HAVE TO BE QUICK!!!
Answer:
A) a^8
B) 16a^14
C)a^mn
D)24a^yz
E)a^3
F)5a^2
G) a^5
H)a^m-n
The figure is made up of a square and a rectangle. Find the area of the shaded region 16 by 3 by 7
Answer:
Go on Answers.com your welcome.
Gordon read 18 pages of a book about rockets in 40 minutes. What was the unit rate per minute? Per hour?
Answer:
he can read a page in about 2 minutes and i.d.k about the hour part
Step-by-step explanation:
you do
40 divided by 18 and get 2.2
Answer:
.45 per minute and 27 per hour
Step-by-step explanation:18/40 simplified
What is the area of a rectangle whose length is 36 inches and whose width is 42 inches?
Answer:
1512
Step-by-step explanation:
L x W = Area
PS
The diagram shows the dimensions of a coal bunker.
The volume of the bunker is 0.432 m^3
Calculate the length, a, shown on the diagram. Give your answer in centimetres.
Answer:
Step-by-step explanation:
80×= 8×+16