The red-shaded part represents the fraction 2/7.
We are given an image of circle in the question which has 7 equal parts with two parts shaded red and the other five shaded white.
We have to find the fraction that represents the red shaded part of the circle.
A fraction defined as the part of the whole thing. For example, a pizza is divided into 6 equal pieces, then each piece is represented by 1/6.
We know that,
Fraction of red shaded part = Number of red parts/ Total number of parts
Here,
Number of red parts = 2
Total number of parts = 7
Hence,
Fraction of red shaded part = 2/7
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1. The ball bin at the local pizza shop has
3,600 balls. Jamie randomly grabbed 20 balls and
threw them out of the bin. The results are in the
table below. How many of each color do you
predict are in the bin?
Blue
4
Red
6
Green
2
Orange
3
Yellow
5
There are approximately 720 blue balls, 1080 red balls, 360 green balls, 540 orange balls, and 900 yellow balls in the bin.
How many of each color do you predict are in the bin?To predict how many of each color are in the bin, we can assume that the ratio of each color in the bin is the same as the ratio in the sample of 20 balls.
First, we calculate the total number of each color in the sample:
Blue: 4 balls
Red: 6 balls
Green: 2 balls
Orange: 3 balls
Yellow: 5 balls
Next, we calculate the total number of balls in the sample:
4 + 6 + 2 + 3 + 5 = 20
Now, we can set up proportions to estimate the number of each color in the bin:
Blue: (4/20) * 3600 = 720
Red: (6/20) * 3600 = 1080
Green: (2/20) * 3600 = 360
Orange: (3/20) * 3600 = 540
Yellow: (5/20) * 3600 = 900
Therefore, we predict that there are approximately 720 blue balls in the bin.
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Solve for x:
-7x + 28 = -3x + 40
Answer:
x = -3
Step-by-step explanation:
To solve this all we need to do is the standard "
Isolate the variable by dividing each side by factors that don't contain the variable."
Hope this helps and have a nice day!
PS if you could mark brainliest that'd be great! I'm very close to "expert" rank. Haha!
Answer:
x = -3
Step-by-step explanation:
-7x + 28 = -3x + 40
-7x + 3x = 40 - 28
-4x = 12
x = -3
I hope this helped!
Which number is a composite number? A.11 B.21 C.31 D.41
Answer:
21
Step-by-step explanation:
A prime number has only two factors: 1 and itself.
A composite number has more than two factors. The number 1 is neither prime nor composite.
Answer:
B. 21
Step-by-step explanation:
31 is the only number that can be made by multiplying another number other than 1 and itself.
1x21=21
3x7=21
all the other options only have 2 factors
A ream of paper is 500 sheets. Mr. Perez puts 1/4 of the ream in his printer. He stores 2/3 of the remaining ream and divides the rest of the paper equally among his 25 students. How many sheets of paper does each student get?
Answer:
Each student would get 25 sheets of paper.
Step-by-step explanation:
Mr. Perez starts out with 500 sheet. He puts 1/4 in the printer. That leaves 3/4 that he did not put in the printer.
3/4 x 500 = 375.
He take 2/3 of the 375 sheets and stores them. This leaves 1/3 of 375 sheet to hand out to students.
1/3 x 375 = 125
He has 125 sheets to share among 25 students.
125/5 = 25
Books cost $6.95 each. Mary had a $5 bill,a$1 bill.and 3 dimes.How much more money does she need to buy one book?
Answer:
65 cents
Step-by-step explanation:
5 + 1 + .30 = 6.30
6.95 - 6.30 = .65
Sketch the graph of the solution set of the system of inequalities. Label the vertices of the region. 3x + 7y < 21 x > 0 y > 0
The graph of the equations 3x + 7y < 21, x > 0, and y > 0 are attached
The vertices are: (0, 0), (0, 3) and (7, 0) are identified in the graph
What are inequality graph?The regions that satisfy one or more inequalities can be seen when there are inequalities on a graph.
These inequalities are frequently linear and can be represented by straight line graphs.
To solve the inequalities, plot straight line graphs with either a solid line or a dashed line using the linear equations.
A solid line indicates that the line is present.
The line is not included if it is dotted.
The graphs for the equation is plotted and attached
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You have an infinite number of chocolate candies. Two‐fifths of them have a caramel center. You choose 3 candies. What is the probability that at least 2 of them have a caramel center?
We can use the complement rule to solve this problem, which states that the probability of an event happening is equal to 1 minus the probability of the event not happening.
The event we're trying to find the probability of is "at least 2 of the candies have a caramel center." The complement event is "fewer than 2 of the candies have a caramel center."
To find the probability of the complement event, we need to find the probability that exactly 0 candies have a caramel center, plus the probability that exactly 1 candy has a caramel center.
The probability that exactly 0 candies have a caramel center is (2/5)^0 * (3/5)^3 = (3/5)^3
The probability that exactly 1 candy has a caramel center is 3 * (2/5) * (3/5)^2 = (18/125)
The probability of the complement event is (3/5)^3 + (18/125)
Therefore, the probability of at least 2 of the candies having a caramel center is 1 - (3/5)^3 - (18/125)
I hope this helps :)
Conduct the hypothesis test and provide the test statistic and the critical value, and state the conclusion. A person drilled a hole in a die and filled it with a lead weight, then proceeded to roll it 200 times. Here are the observed frequencies for the outcomes of 1, 2, 3, 4, 5, and 6, respectively: 29, 31, 49, 37, 26, 28. Use a 0.025 significance level to test the claim that the outcomes are not equally likely. Does it appear that the loaded die behaves differently than a fair die?
The loaded die appears to behave differently from a fair die.Based on the chi-square test, the loaded die does not exhibit equal probabilities for each outcome.
To test the claim that the outcomes of the loaded die are not equally likely, we can use the chi-square goodness-of-fit test. The null hypothesis (H₀) assumes that the outcomes are equally likely, while the alternative hypothesis (H₁) assumes that they are not equally likely.
Step 1: Set up hypotheses
H₀: The outcomes of the die are equally likely.
H₁: The outcomes of the die are not equally likely.
Step 2: Select the significance level
The significance level is given as 0.025, which means we have a two-tailed test and an alpha level of 0.025 for each tail.
Step 3: Compute the test statistic
We calculate the chi-square test statistic using the observed frequencies and the expected frequencies assuming equal probabilities for each outcome.
Expected frequencies (fair die):
1: 200/6 = 33.33
2: 200/6 = 33.33
3: 200/6 = 33.33
4: 200/6 = 33.33
5: 200/6 = 33.33
6: 200/6 = 33.33
Applying the chi-square formula, we get the test statistic:
χ² = ∑((observed - expected)² / expected)
Calculating this value, we get χ² ≈ 13.97.
Step 4: Determine the critical value
Since the significance level is 0.025 and the test is two-tailed, we divide the significance level by 2 to find the critical value associated with each tail. With 5 degrees of freedom (6 categories - 1), the critical value is approximately 11.07.
Step 5: Make a decision
The test statistic (13.97) is greater than the critical value (11.07), which leads us to reject the null hypothesis. Thus, we have evidence to suggest that the outcomes of the loaded die are not equally likely.
The loaded die appears to behave differently from a fair die.
In conclusion, based on the chi-square test, the loaded die does not exhibit equal probabilities for each outcome.
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Please help I am so so confused thank you all
y-(-9) = -6(x-(-4)), y = -6x-33
Help
Identify the equation that represents a quadratic relationship
y =4x^2
y =4x^4
y =4x^3
y =4
The equation that represents a quadratic relationship is y = 4x^2. Option A.
A quadratic relationship is a mathematical relationship where the variable y is a function of the variable x raised to the power of 2. In other words, it is an equation in which the highest power of the variable is 2.
Let's analyze the given equations:
1. y = 4x^2: This equation represents a quadratic relationship because the variable x is raised to the power of 2. The term 4x^2 indicates that the relationship between x and y is quadratic.
2. y = 4x^4: This equation represents a quartic relationship, not a quadratic relationship. The variable x is raised to the power of 4, which indicates a higher degree relationship than quadratic.
3. y = 4x^3: This equation represents a cubic relationship, not a quadratic relationship. The variable x is raised to the power of 3, indicating a higher degree relationship.
4. y = 4: This equation represents a linear relationship, not a quadratic relationship. It is a constant equation where y is always equal to 4, regardless of the value of x. In a quadratic relationship, the variable x should have a power of 2. Option A.
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If A = 2 + 7i, B = 5 + 8i, and C = 1 + 3i , where i is the imaginary unit. Find B-AC, give your answer as a complex number in standard form.
Please give full answer
Answer:
24 - 5iStep-by-step explanation:
GivenA = 2 + 7i B = 5 + 8i C = 1 + 3iTo findValue of B - AC in standard formSolutionB - AC =5 + 8i - (2 + 7i)(1 + 3i) =5 + 8i - 2 - 7i - 6i - 21i² =3 - 5i + 21 =24 - 5iAny help would be great
Answer:
88/57
Step-by-step explanation:
Answer: 88:57
Step-by-step explanation:
Length is 88 and width is 57
So the ratio is 88:57
During a thunderstorm, 600 millimeters of rain fell in 30 minutes. How fast did the rain fall, in millimeters per hour? NOOO BOTS!!!!!!!!!!
Answer:
CAN YOU PLS RATE MY QUESTION GOOD I NEED POINTS
Step-by-step explanation:
PLS!!!!!!!!❤️
Answer:
1200 millimeters an hour
Step-by-step explanation:
30 minutes = 600 millimeters
1 hour= 1200 millimeters
how many integers between 2023 and 5757 have 12, 20, and 28 as factors
Answer:
9 integers between 2023 and 5757 that have 12, 20, and 28 as factors.
Step-by-step explanation:
An integer that has 12, 20, and 28 as factors must be divisible by the least common multiple (LCM) of these numbers. The LCM of 12, 20, and 28 is 420. So we need to find the number of integers between 2023 and 5757 that are divisible by 420.
The first integer greater than or equal to 2023 that is divisible by 420 is 5 * 420 = 2100. The last integer less than or equal to 5757 that is divisible by 420 is 13 * 420 = 5460. So the integers between 2023 and 5757 that are divisible by 420 are 2100, 2520, ..., 5460. This is an arithmetic sequence with a common difference of 420.
The number of terms in this sequence can be found using the formula for the nth term of an arithmetic sequence: an = a1 + (n - 1)d, where an is the nth term, a1 is the first term, d is the common difference, and n is the number of terms. Substituting the values for this sequence, we get:
5460 = 2100 + (n - 1)420 3360 = (n - 1)420 n - 1 = 8 n = 9
So there are 9 integers between 2023 and 5757 that have 12, 20, and 28 as factors.
Solve the equation and enter the value of x below. x- (-1) = 50 Answer here
The required value of x is 49.
What is expression?A mathematical expression is a phrase that contains a minimum of two numbers or variables and at least one mathematical procedure. It is possible to multiply, divide, add, or subtract in arithmetic.
According to question:Simplifying the left side of the equation, we get:
x - (-1) = x + 1
So the equation becomes:
x + 1 = 50
Subtracting 1 from both sides, we get:
x = 49
Therefore, the value of x is 49.
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Given that m<2=3x - 11 and m<5 = 7x + 46 use the figure to answer question 1-3
Applying the relationship of angle pairs, THE VALUE OF X AND THE GIVEN ANGLE MEASURES ARE:
x = 14.5 (Blue)m<5 = 147.5 degrees (Yellow)m<4 = 32.5 degrees (Pink)Given:
m<2 = 3x - 11
m<5 = 7x + 46
Thus, find x:
<2 and <5 are same-side interior angles
Therefore:m<2 + m<5 = 180 degrees (supplementary)
Substitute\(3x - 11 + 7x + 46 = 180\\\)
Collect like terms\(10x +35 = 180\\\\10x = 180 - 35\\\\10x = 145\\\\\mathbf{x = 14.5}\)(Blue)
Find m<5:
Plug in the value of x into 7x + 46
\(m \angle 5 = 7(14.5) + 46\\\\\mathbf{m \angle 5 = 147.5^{\circ}}\)(Yellow)
Find <4:
m<4 = m<2 (vertical angles are congruent)
Substitutem<4 = 3x - 11
Plug in the value of xm<4 = 3(14.5) - 11
m<4 = 32.5 degrees (Pink)
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Please awnser asap I will brainlist
Answer:
True
Step-by-step explanation:
The easiest way to understand this problem is to first breakdown the notation. In words, the problem is stating 9 is NOT an element of the set containing the elements 4, 1, 8, and 7. Since 4\(\neq\)9, 1\(\neq\)9, 8\(\neq\)9, and 7\(\neq\)9 then 9 is not an element of this set and the statement is true.
If the graph is reflected over the x-axis, what is the
domain of the function?
Answer:
When the function is to be reflected over the x and y-axis, we write it as a reflection of a function over x = y, so it is divided into two parts or two cases y = x and y = − x. When the graph of function is reflected over y = x, then we will swap the coordinates of the x and y-axis with each other while their signs remain the same.
Step-by-step explanation:
Calculate how much money Carlos has after 4 years if he originally invested $3675 at 8.3% compounded continuously. Use Pe rt, where A is the final amount, P is the original amount deposited, r is the interest rate, and t is the number of years.
Answer:
$5122.04
Step-by-step explanation:
Continous interest formula:
\(P*e^{rt}\)=A
we have
\(3675*e^{4*.083}\\3675*1.39375284861\\5122.04171828\)
Which rounds to
5122.04
A recently admitted class of graduate students at a large state university has a mean GRE verbal score of 650 with a standard deviation of 50. The scores are reasonably normally distributed. Five students have parents who happen to be on the board of trustees, and these students were admitted with a mean GRE score of 490. Should the local newspaper editor write a scathing editorial about favoritism?
Answer:
The answer is below
Step-by-step explanation:
The z score is a score used to determine the number of standard deviations by which the raw score is above or below the mean, it is given by the equation:
\(z=\frac{x-\mu}{\sigma} \\\\\mu=mean, \sigma=standard\ deviation,x=raw\ score\\\\for\ a\ sample\ n:\\\\z=\frac{x-\mu}{\sigma/\sqrt{n} }\)
Given that μ = 650, σ = 50. To find the probability that 5 students who have a mean of 490, we use:
\(z=\frac{x-\mu}{\sigma/\sqrt{n} } =\frac{490-650}{50/\sqrt{5} } =-7.16\)
From the normal distribution table, P(x < 490) = P(Z < -7.16) = 0.0001 = 0.01%
Since only a small percentage of people score about 490, hence the local newspaper editor should write a scathing editorial about favoritism
How many solutions exist for the system of equations below?
Answer Choices:
none
one
two
infinitely many
Answer:
None
Step-by-step explanation:
No solutions exist for the system of equations because the system is illogical: 3x+y=3x+y, but 18≠16.
Which function is the inverse of f(x) = -5x- 4?
Answer:
Inverse of \(- 5 x - 4 =\) \(\frac{x + 4}{5}\)
Step-by-step explanation:
Let y = -5x-4
Swap y and x
x = -5y -4
Solve for y
x+4 = -5y
\(y=- \frac{x + 4}{5}\) which is the inverse
28. On a trip of 320 miles, Sunao's truck averaged 9.2 miles per
gallon. At the same rate, how much gasoline would his truck
use on a trip of 440 miles?
Help me please , I need to turn this in by midnight
Answer:
Step-by-step explanation:
for IV you do 40^2+30^2=c, or 1600+ 900=c. c= 2500 and unsquare that you get 50
Answer:
the ans of III is 50 and IV is12
Kiran says that a solution to the equation `x-7=3` must also be a solution to the equation `3x-21=9`.
Write a convincing explanation as to why this is true. Explain how these are equivalent equations.
Answer: This is true because everything in the first equation was multiplied equally to get to the second equation. Every part was multiplied by three. The first equation is x-7=3 and the second can be seen as 3(x-7=3). The three will not affect x seeing that the entire equation had the same thing done to it.
AB is parallel to CD.
А
E
697
111
a) Find the value of angle x.
b) Work out the value of angle y.
xo
o
С
Answer:
x = 69
y = 69
Step-by-step explanation:
Since AB is parallel to CD
x = 69 ( They are alternate angles)
and
y = 180 - 111 ( Co - interior angles)
y = 69
solve the simultaneous equation x + y = 2 and x - y = 1
Answer:
(3/2, 1/2)
Step-by-step explanation:
Solve by elimination:
\(x+y=2\\+x-y=1\)
The y's cancel
\(2x=3\)
Divide by 2
\(x=\frac{3}{2}\)
Plug back in
\(\frac{3}{2} +y=2\)
subtract
\(y=2-\frac{3}{2}\)
\(y=\frac{1}{2}\)
So, your answer:
\((\frac{3}{2},\frac{1}{2})\)
Solve for x: 4x − 2 > 6x + 8.
\(\\ \rm\longmapsto 4x-2>6x+8\)
\(\\ \rm\longmapsto 4x-6x>8+2\)
\(\\ \rm\longmapsto -2x>10\)
\(\\ \rm\longmapsto -x>5\)
\(\\ \rm\longmapsto x<-5\)
If the sales tax rate is 7.5% in North Carolina, then how much would you pay in Raleigh for a pair of shoes that cost $40.00?
Answer:
$3
Step-by-step explanation:
40*7.5/100= Your answer
Question 5 of 10 How does a low credit score affect a person who applies for a loan? O A. It causes banks to charge the person higher interest rates on the loan. OB. It makes it easier for the person to get a loan with a poor debt-to- income ratio. O C. It allows banks to give the person a loan without checking his or her tax records. OD. It makes banks more likely to give the person a large, long-term loan. SUBMIT
It's def not c or d, I think it's a.