The probability that a number selected at random from the set {2, 3, 7, 12, 15, 22, 72, 108} will be divisible by both 2 and 3 is 3/8.
Given set:
random from the set {2, 3, 7, 12, 15, 22, 72, 108}
From the set:
The number that are divisible by both 2 and 3 is:
12,72,108.
So number of favorable outcomes is = 3
Number of possible outcomes = 8
we know that
probability = favorable outcomes / possible outcomes
= 3/8
= 37.5%
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kylie uses the number 400 to represent a location 400 miles north of the equator she uses the number- 2000 to represent a location 2000 miles south of the equator which number would represent what number would represent a location on the equator
Answer:
0
Step-by-step explanation:
Direction is defined as the path that something takes. North, south, east and west all are the direction. Up down, left and right are also used to represent the direction. Using the direction chart we get the equator is at 0 distance away from the location of kylie.
Given-
Kylie uses the number 400 to represent 400 miles north of the equator.
Kylie uses the number -2000 to show 2000 miles south of the equator.
What is the direction?
Direction is defined as the path that something takes. North, south, east and west all are the direction. Up down, left and right are also used to represent the direction.
As Kylie use the number 400 to represent 400 miles north of the equator. Thus if he need to back at 400 towards the south to reach back to the equator. Thus the equator is the point from where he has started and the equator is at 0 distance away from the location of kylie where he had started earlier.
Similarly Kylie uses the number -2000 to show 2000 miles south of the equator. Thus if he need to come back at 2000 towards the north to reach back to the equator. Thus the equator is the point from where he has started and the equator is at 0 distance away from the location of kylie where he had started earlier.
Hence both the statement suggest that the equator is at 0 distance away from the location of kylie where he had started earlier.
The coordinate -3 has a weight of 2, and the coordinate 4 has a weight of 5. Find the weighted average.
Answer:
2
Step-by-step explanation:
Weighted mean formula:
\(\overline{x}=\dfrac{\displaystyle\sum^n_{i=1} w_ix_i}{\displaystyle\sum^n_{i=1} w_i}\)
The weighted mean is calculated by dividing the sum of the product of each coordinate and its weight by the sum of the weights.
Given:
The coordinate -3 has a weight of 2.The coordinate 4 has a weight of 5.\(\begin{aligned}\implies \overline{x} & = \dfrac{w_1x_1+w_2x_2}{w_1+w_2} \\\\ & =\dfrac{2 \cdot -3 + 5 \cdot 4}{2 + 5}\\\\& = \dfrac{-6+20}{7}\\\\& = \dfrac{14}{7}\\\\& = 2 \end{aligned}\)
Therefore, the weighted mean (weighted average) is 2.
What is the approximate average rate of
change for the height of the plant, measured in
centimeters per day, between day 20 and day
40?(leave answer in fraction and decimal)
Answer:
Average change in height of the plant is 0.5 cm per day.
Step-by-step explanation:
Height of the plant on day 20 = 40 cm
Height of the plant on day 40 = 50 cm
Change in height = 50 - 40 = 10 cm
Number of days between day 20 and day 40 = 20
Average change in height of the plant = \(\frac{\text{Change in height of the plant}}{\text{Duration}}\)
= \(\frac{10}{20}\)
= 0.5 cm per day
Therefore, average change in height of the plant is 0.5 cm per day.
HELP!!
the graph shows the height y in feet of a flying insect x seconds after taking off from the ground write an equation that represents the height of the insect as a function.
Answer:
its 12 feet
Step-by-step explanation:
The equation of the parabola will be y = - (x - 3)² + 9.
What is the equation of the parabola?Let the point (h, k) be the vertex of the parabola and a be the leading coefficient.
Then the equation of the parabola will be given as,
y = a(x - h)² + k
The graph shows the height y in feet of a flying insect x seconds after taking off from the ground.
Then the equation that represents the height of the insect as a function will be
From the diagram, the vertex of the parabola is at (3, 9). Then the equation of the parabola will be
y = a(x - 3)² + 9
The parabola is passing through the point (6, 0) will be
0 = a(6 - 3)² + 9
- 9 = 9a
a = -1
Then the equation of the parabola will be
y = - 1(x - 3)² + 9
y = - (x - 3)² + 9
The equation of the parabola will be y = - (x - 3)² + 9.
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Select all of the following that are ordered pairs of the given function.
f(x) = 3 - 2x
(-2,-1)
(-1,5)
(0, 3)
(1, 0)
(2,-1)
Answer:
(-1, 5), (2, -1), (0, 3)
If a =5 and b = 9, what is the following fraction in lowest terms? a+1/b
O 6/9
O 3/4
O 2/3
O 2/9
The fraction in lowest terms is 2/3. Option C
How to determine the valueFirst, we need to know that a fraction is described as the part of a whole variable, a whole number or a whole element.
The different fractions in mathematics are listed thus;
Simple fractionsProper fractionsImproper fractionsComplex fractionsMixed fractionsFrom the information given, we have that;
a+1/b
Such that a = 5 and b = 9
Now, substitute the values, we get;
5 + 1/9
Add the values of the numerator
6/9
Divide the values
2/3
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1) 12. 1 7 round to the nearest whole number
Answer:
12
Step-by-step explanation:
12.3 would be rounded uo but since it's a whole number it would be 12.
I spent 3/4 of my money, and then I spent 1/5 of what was left. What part of all the money do I have left?
The part of all the money I have left \( \large\bf \implies{ \frac{1}{5}}\)
Step-by-step explanation:Given that\(\bf \longrightarrow(1 - \frac{3}{4} ) \times (1 - \frac{1}{5} ) \\ \\ \bf \longrightarrow \frac{4 \times 1 - 1 \times 3}{4} \times \frac{5 \times 1 - 1 \times 1}{5} \\ \\ \bf \longrightarrow \frac{4 - 3}{4} \times \frac{5 - 1}{5} \\ \\ \bf \longrightarrow \frac{1}{4} \times \frac{4}{5} \\ \\ \bf \longrightarrow\frac{ \cancel4}{ \cancel{20} } \\ \\ \bf \longrightarrow\frac{1}{5} \)
Divide. 3/5 divided by 4
Answer:
3/20
Step-by-step explanation:
-
Answer:
0.15
Step-by-step explanation:
Given the following sequence, which other representations below represent the SAME sequence?
Answer:
...
Step-by-step explanation:
Find the perimeter of the parallelogram whose vertices are A (-1,1), B (-9,6), C(-12,11) and D(-4,6) Give your answer correct to one decimal place
Answer: 30.5
Step-by-step explanation:
Kevin can clean a large aquarium tank in about 7 hours. When Kevin and Lara work together, they can
clean the tank in 3 hours. Enter and solve a rational equation to determine how long, to the nearest tenth
of an hour, it would take Lara to clean the tank if she works by herself? Complete the explanation as to
whether the answer is reasonable.
It would take Lara about 7hours to clean the tank by herself. The answer is reasonable because it
is (select) and, when substituted back into the equation, the equation is true.
The answer is reasonable because it is positive and also the equation is true . it would take Lara about 5.3 hours to clean the tank by herself.
Let's denote the time it takes for Lara to clean the tank alone as "L". We can use the formula for the combined work rate of two people, which is:
(1/7) + (1/L) = (1/3)
Multiplying both sides by the least common denominator, 21L, gives:
3L + 21 = 7L
Subtracting 3L from both sides, we get:
21 = 4L
Dividing both sides by 4, we get:
L = 5.25 hours (to the nearest tenth)
The answer is reasonable because it is positive, and it is also less than 7 hours, which is Kevin's time. When substituted back into the original equation, we get:
(1/7) + (1/5.25) = (1/3)
0.1429 + 0.1905 = 0.3333
0.3334 ≈ 0.3333
The equation is true, so the answer is reasonable. Therefore, it would take Lara about 5.3 hours to clean.
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aresearcher plans to test the effectiveness of a new cyberbullying reporting app. she randomly selects one eighth-grade class to receive training on how to install and use the app. the students are assured the reporting is anonymous. the other eighth-grade class is not told about the app. the researcher then measures the rates of cyberbullying in both classes over the next 3 months. this study utilizes which type of research design?
The type of research design used in the study is of:
Quantitative research design.
What are the types of research design?There are two types of research design, and they are classified as follows:
Quantitative research design: The aim of quantitative research design it to find the answers to the questions regarding who, what, where, how, and when through the course of research. Additionally, the numeric outcome of the quantitative research is easy to represent in the form of statistics, graphs, charts, and numbers.Qualitative research design: Qualitative research design aims at answering just two questions, how and why, using open-ended questions and helps the subjects express their views clearly. One application of qualitative research design is for businesses that aim to understand customers’ behaviour and requirements.In this problem, the rates of cyberbullying will be analyzed, which is a numeric measure, hence it is a quantitative research design.
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Help me pls. Brainy reward.
on average a customer waits 10 minutes in a queue and customers arrive at the rate of two per minute. how many customers are waiting in the queue on average
The average number of customers waiting in the queue is 20
In this question, we have been given that the customers arrive at the rate of two per minute.
On average a customer waits 10 minutes in a queue.
We need to find the number of customers waiting in the queue on average.
Assume that the average number of customers waiting in the queue is N.
We have the average Rate of Arrival = 2 customers per minute
So, by the formula for average waiting time under the Single-Server Queue Model,
10 = N/2
N = 10 * 2
N = 20
The average number of customers waiting according to the single-server queue model given the above conditions is 20
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question on hypotheses - is there evidence that mean speed of trucks on the i-65 highway is less than 69 miles per hour? the mean speed of a sample of 30 trucks driving on the i-65 highway was 67.8 miles per hour. the null and alternative hypothesis of a significance test would be:
By forming null and alternative hypotheses and using statistical tests, the evidence suggests that the mean speed of trucks on the I-65 highway is less than 69 miles per hour.
In your case, the null hypothesis would be: "The mean speed of trucks on the I-65 highway is equal to 69 miles per hour." The alternative hypothesis would be: "The mean speed of trucks on the I-65 highway is less than 69 miles per hour."
In your case, the sample mean speed of trucks on the I-65 highway was 67.8 miles per hour. To calculate the test statistic, we would use a t-test since the sample size is small (n=30). The t-test would give us a value of t=-1.83. We would then compare this value to a critical value from a t-distribution table with 29 degrees of freedom and a significance level of 0.05. The critical value is -1.699.
Since the test statistic (-1.83) is less than the critical value (-1.699), we reject the null hypothesis in favor of the alternative hypothesis. This means that there is evidence to suggest that the mean speed of trucks on the I-65 highway is less than 69 miles per hour.
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The length of a rectangle is 4 yd longer than its width.
If the perimeter of the rectangle is 56 yd, find its length and width.
Answer: The length of the rectangle is 16 yards and the width is 12 yards.
Step-by-step explanation:
The length is 4 yds longer than the width. Let's remove that from the perimeter so that the perimeter will be as if all sides had the same length (remember there are 2 sides for length and 2 sides for width).
\(56-4-4\\48\)
Now we made it so that the extra 4 yards are gone and all sides are equal like a square. Now we can divide by 4 to determine the length of each of the now equal sides
\(\frac{48}{4} =12\)
So all of the sides are 12, 12, 12, and 12. To two of the sides we can add back the extra 4 yards we took out giving us sides of 12, 12, 16, and 16.
Let's add it all together and see if it makes the perimeter of 56
\(12+12+16+16\\24+32\\56\)
It does! Since the length is 4 yds longer than the width the length is 16 and width is 12.
Harry collected data from a random sample of seventh graders at his school. Out of 25 respondents, 10 of them ride the
bus to school. Of the 150 seventh graders that attend Harry's school, how many seventh grade students should be
expected to ride the bus to school?
Answer:
10/25=×/150
x=60
so 60 students
Answer:
60
Step-by-step explanation:
because I litterly just did the test and got my answers back
my sister needs help please
What is the value of (3 x 10-5)
Determine whether the following graph represents a function.
10
8
6
4
-10
-8
-6
-4
-2
2
4
6
8
10
-4
Answer:
yes
Step-by-step explanation:
The graph represents a function because it passes the vertical line test
How to determine whether the graph represents a function?From the complete question, the given graph is a linear graph
All linear graphs represent a function
This is so because they have constant slopes, and they pass the vertical line test
Hence, we can conclude that the graph represents a function
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Hrbrhrnntntntjrntnnfngngng
Answer: :)
Step-by-step explanation: your mom
Solve for X
8x - 10
110
Please help me I will give you 25 points and brainliest if you help!! :)))
Answer:
(l*b)
length*breadth
=is answer.
6 + -1/4 plllllllllllllssssssss helppppppppppp i am tooo dummmmmmmmm
Answer:
5 3/4
Step-by-step explanation:
HOPE THIS HELPS
PLZZ MARK BRAINLIEST
Answer:
5 3/4
Step-by-step explanation:'
adding a negative number is just subtracting
Find the value of the lettered angles in each of the following ( see image ).
Please show workings.
The only given angles are 56° in the first circle and 65° in the second circle.
Note : O indicates the center of the circle is above it.
Answer:
Question 1
h = 56° as alternate interior angles (the diameter is the transversal)f = 90° as opposite to the diameterg = 90° - 56° = 34° as complementary angle in right triangleQuestion 2
i = 65° as the same arc is interceptedi + j = 90° as opposite to diameterj = 90° - i = 90° - 65° = 25°Help pls pls pls plssss
Answer:
3/8
Step-by-step explanation:
2 1/8 - 1 3/4
2 1/8 - 1 6/8
17/8 - 14/8
3/8
what is the answer for this question
j-12=4
Answer:
J=16
Step-by-step explanation:
You have to move all the number to the opposite side of the variable.
j-12=4
j=4+12
j=16
convert 33/7 into a mixed number
Answer:4 \(\frac{5}{7}\)
Step-by-step explanation: First, Divide 33 by 7 Next, Write down the whole number 4 and then write down the remainder as the new numerator (5) above the denominator (7) = 4 \(\frac{5}{7}\)
The radius of a circle is 8 miles. What is the diameter?
Answer:
16 miles
Step-by-step explanation:
8*2=16
Brainlest pls?