You ask 50 of your classmates if they have any siblings. Complete the two-way frequency table to show the results of the survey.
Answers
Girls of 25 says Yes, 10 boys say No. 30 total Students say No, 45 girls total, with a total of 60 Students
What meant by mathematical expression ?Mathematical expressions consist of at least two numbers or variables, at least one arithmetic operation, and a statement. It's possible to multiply, divide, add, or subtract with this mathematical operation.
An expression that uses numbers, variables, or both is a mathematical expression. The equal symbol is never used in expressions. Here are a few phrases as examples. A mathematical statement stating the equality of two expressions is known as an equation.
Given,
5 boys tell yes and total boys and girls tell yes is 30 by simplifying
no of girls tell yes =30 - 5= 25
no of girls tell no =20
overall total boys tell no = 15-5=10
The no of boys tell no =10
So total no of boys and girls tell no = 20+10=30
total no of girls tell yes and no =60-15=45
The complete question is : You ask 60 of your classmates if they have any siblings. Complete the two-way frequency table to show the results of the survey.
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Related Questions
as the number of rainy days increases, so does the height of all of the tomato plants in liz's garden. there appears to be a(n) correlation between number of rainy days and tomato plant height.
Answers
There appears to be positive correlation between number of rainy days and tomato plant height.
This can be said because a positive correlation is a relationship between two variables that if one moves in a direction the other moves in the same direction. In this situation the rain increases so the tomato plant height increases, therefore there is a positive correlation.
A correlation coefficient is a statistical indicator of how well changes in one variable's value predict changes in another. When two variables are positively linked, the value either rises or falls together.
A correlation reveals the nature and magnitude of a link between two variables. In other words, it illustrates the degree to which measurements of two or more variables are comparable throughout a dataset.
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the NEW HDI is created from combining a number of different indices as described in the textbook. the value of each sub-index used in the creation of the HDI is created using a dimension index. Calculate the Dimension index if the Actual Value=8.5 , The Minimum Value=4.0 and the Maximum value=19.3
Answers
The Dimension Index is 0.322.
How is the Dimension Index calculated?The Dimension Index is calculated using the formula:
\[ \text{Dimension Index} = \frac{\text{Actual Value} - \text{Minimum Value}}{\text{Maximum Value} - \text{Minimum Value}} \]
Given that the Actual Value is 8.5, the Minimum Value is 4.0, and the Maximum Value is 19.3, we can plug these values into the formula:
\[ \text{Dimension Index} = \frac{8.5 - 4.0}{19.3 - 4.0} = \frac{4.5}{15.3} \approx 0.294 \]
So, the Dimension Index is approximately 0.294.
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Take these points. 25 of them. Will Thanks give brainiest and 5 star
Answers
Answer:
What do you need help with? Please go easy on me. I'm just a kid.
Step-by-step explanation:
I’ll mark brainliest plz answer correct.
Answers
Answer:
I love you you are so nice we need more people like you in the world your so nice i mean it really!!!
Step-by-step explanation:
Answer:
Thank you for your kind help.
If u = <5, -5>, v = <1, -4>, and w = <4, -9>, which operation gives the result represented in the graph?
Answers
Answer:
-2u+w
Step-by-step explanation:
A point P has coordinates (-8, -2). What are its new coordinates after reflecting point P across the x-axis?
Answers
Answer:
(-8,2)
Step-by-step explanation:
This is because when you reflect a point across the x-axis, the x-coordinate fo the point remains the same and the y-coordinate's sign gets switched.
(x,y) --> (x,-y)
(-8,-2) --> (-8,2)
If n is an odd integer, then it is the difference of two perfect squares. The number n is an odd integer if and only if 3n+5=6k+8 for some integer k. . The number n is an even integer if and only if 3n+2=6k+2 for some integer k.
Answers
The statements provided can be rewritten as follows: 1. If n is an odd integer, then there exist integers a and b such that n = a^2 - b^2. 2. n is an odd integer if and only if 3n + 5 is of the form 6k + 8 for some integer k. 3. n is an even integer if and only if 3n + 2 is of the form 6k + 2 for some integer k.
Let's analyze these statements:
1. If n is an odd integer, then there exist integers a and b such that n = a^2 - b^2.
This statement is true and can be proven using the concept of the difference of squares. For any odd integer n, we can express it as the difference of two perfect squares: n = (a + b)(a - b), where a and b are integers. This shows that n can be written as the difference of two squares.
2. n is an odd integer if and only if 3n + 5 is of the form 6k + 8 for some integer k.
This statement is not true. Consider the counterexample where n = 1. In this case, 3n + 5 = 8, which is not of the form 6k + 8 for any integer k.
3. n is an even integer if and only if 3n + 2 is of the form 6k + 2 for some integer k.
This statement is true. For any even integer n, we can express it as n = 2k, where k is an integer. Substituting this into the given equation, we get 3n + 2 = 3(2k) + 2 = 6k + 2, which is of the form 6k + 2.
In conclusion, statement 1 is true, statement 2 is false, and statement 3 is true.
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Select the correct answer. two triangles, abc and cde, share a common vertex c on a grid. in triangle abc, side ab is labeled 4x minus 1, side bc is labeled 4, side ac is labeled 5. in triangle cde, side cd is labeled 5, side de is labeled x plus 2, side ce is labeled 4. if geometry symbol represented as small triangle with three sides. abc geometry congruent symbol represented as two small horizontal parallel lines and a horizontal symbol s. geometry symbol represented as small triangle with three sides. dec, what is the value of x? a. x = 8 b. x = 5 c. x = 4 d. x = 1 e. x = 2
Answers
Answer:
x=1
Step-by-step explanation:
The value of x is 1. So, the correct answer is d. x = 1.
To find the value of x, we can use the fact that the corresponding sides of congruent triangles are equal.
In triangle ABC, side AB is labeled 4x - 1, side BC is labeled 4, and side AC is labeled 5.
In triangle CDE, side CD is labeled 5, side DE is labeled x + 2, and side CE is labeled 4.
Since triangle ABC is congruent to triangle CDE, we can set up the following equations:
4x - 1 = 5
4 = x + 2
Simplifying these equations, we get:
4x = 6
x = 1
Therefore, the value of x is 1. So, the correct answer is d. x = 1.
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PLS HELP. CIRCUMFERENCE QUESTION! WILL GIVE BRAINLIEST
Answers
Answer:
L = 24,873.6 miles
Step-by-step explanation:
Length of the Circumference
Given a circle of radius r, the length of the circumference, or line surrounding the shape is:
The Earth has a diameter of 7,917.5 miles. The radius is half the diameter:
r=7,917.5/2=3,958.75 miles
Assuming a plane flies around the equator at ground level, the distance it would travel is:
L = 24,873.6 miles
Mary has 200 ml of hand sanitizer that is 15% alcohol. She mixes it with 200 ml of a
hand sanitizer that is x% alcohol.
How many milliliters of water is in the resulting mixture of hand sanitizers?
Answers
Answer:
(370-2x)ml
Step-by-step explanation:
evaluate : 20-[5+(9-6]
Answers
Answer:
12
Step-by-step explanation:
20-(5+(9-6)) = 20-(5+(3)) = 20-(8) = 12.
Alternatively, rewrite the question without parenthesis.
20-(5+(9-6)) = 20-(5+9-6) = 20-5-9+6 = 12.
Soooo…
20-(5+(3)
20-(8)
=12
Hope it helps
Given: 2x + 3(x - 2) = 24
Prove: x = 6
Statements and Reasons?
Answers
Answer:
x=6
Step-by-step explanation:
first we'll use distributive property: we will distribute and multiply 3 by x and - 2
2x + 3x -6 = 24
then we'll add like terms which are 2x and 3x , 24 and 6 the sign of 6 will change from negative to positive:
2x + 3x =24 + 6
5x = 30
after that we will divide both sides by 5 in order to get x
5x/5 = 30/ 5
x = 6
Aggregate Demand (AD)=C+I+G+ (X-M). X = O a. X factor b. exchange c. exports
Answers
Aggregate Demand (AD) is a macroeconomic concept that represents the total demand for goods and services in an economy. The X factor in the AD equation represents exports, which are an important part of the economy.
AD is calculated by adding up the individual components of demand, which include consumer spending (C), investment spending (I), government spending (G), and net exports (X-M). The X-M component represents the difference between exports (X) and imports (M).
The X component in the equation represents exports, which are the goods and services produced domestically and sold to foreign countries. Exports are an important part of the economy as they generate income and create jobs. The M component in the equation represents imports, which are the goods and services purchased from foreign countries and consumed domestically. Imports can have a negative impact on the economy as they represent a drain on resources and can lead to a trade deficit. The X factor in the equation is used to represent exports because it is a variable that can change over time. Factors that can affect exports include exchange rates, tariffs, and global demand for certain products. If the exchange rate between two currencies changes, it can make exports more or less expensive for foreign buyers, which can affect the level of exports. Tariffs are taxes on imports, which can make domestic products more competitive in foreign markets.
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assuming the population standated deviation is known, which of the following statements is true about the standard deviation of the sample mean x
Answers
Assuming the population standard deviation is known and the standard deviation of the sample mean x : option (b) is correct : the standard error of the sample mean decreases.
Central Limit theory:In probability theory, the central limit theorem (CLT) states that the distribution of a sample variable approximates a normal distribution (i.e., a “bell curve”) as the sample size becomes larger, assuming that all samples are identical in size, and regardless of the population's actual distribution shape.
Standard deviation:Standard deviation is a calculation of the dispersion or variation in a set of numbers. If the standard deviation is a small number, it means the data points are close to their average value. If the deviation is large, it means the numbers are spread out, further from the mean or average.
There are different ways to write out the steps of the population standard deviation calculation into an equation. A common equation is:
σ = ([Σ(x - u)2]/N)1/2
Where:
σ is the population standard deviation
Σ represents the sum or total from 1 to N
x is an individual value
u is the average of the population
N is the total number of the population
Sample Mean:A sample mean is an average of a set of data . The sample mean can be used to calculate the central tendency, standard deviation and the variance of a data set. The sample mean can be applied to a variety of uses, including calculating population averages.
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Which number is not in scientific notation? (1 point)
0.2 • 10^3
3 • 10^28
1.03 • 10^–2
1.5 • 10^–6
Answers
Answer:
Hi I'm always here to help!!!
_______________________
Ah welp that was wrong it was A
Sorry that I was wrong
_______________________
Have a great day!!!!
Answer:
Your answer would be:
A.) 0.2 x 10^3
Step-by-step explanation:
Have a great rest of your day
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How many apples could you buy if you went to the store with five dollars?
Answers
Answer:5 apples
Step-by-step explanation:5x1=5
Help please I’m stuck on a question and I’d greatly appreciate it
Answers
Answer: I think that the unknown measure is 22.
Step-by-step explanation: The bottom and height combined is the value of the longer line.
The length of a rectangle is 2 inches more than the width. The area is 24 square inches. Find the dimensions.The length of the rectangle is ? inches, while the width is ? inches.
Answers
In general, the area of a rectangle is given by the formula below
\(A=lw\)where l is its length and w its width.
Furthermore,
\(\begin{gathered} l=w+2 \\ \text{and} \\ lw=24 \end{gathered}\)Solving the system of equations,
\(\begin{gathered} l=w+2 \\ \Rightarrow(w+2)w=24 \\ \Rightarrow w^2+2w-24=0 \end{gathered}\)Use the quadratic formula to find w, as shown below,
\(\begin{gathered} w^2+2w-24=0 \\ \Rightarrow w=\frac{-2\pm\sqrt[]{4-4\cdot-24}}{2}=\frac{-2\pm\sqrt[]{4-4\cdot-24}}{2}=\frac{-2\pm\sqrt[]{100}}{2} \\ \Rightarrow w=-1-5,-1+5 \\ \Rightarrow w=-6,4 \end{gathered}\)Since w is a length, it cannot be negative; therefore, w=4
Finding l,
\(\begin{gathered} w=4 \\ \Rightarrow l=4+2=6 \\ \Rightarrow l=6 \end{gathered}\)The length is 6in and the width is 4in.
In order to determine the slant height of several pyramids, Marjorie used the surface area formula, s= 1/2 pl+b for the slant height,l . Which equation , in terms of l, represents the correct transformation of the surface area formula?
Answers
Answer:
\(l=\dfrac{2(S-b)}{P}\)
Step-by-step explanation:
The surface area formula for pyramids is given by :
\(S=\dfrac{1}{2}Pl+b\) ...(1)
We need to arrange the formula for l.
Take b to LHS,
\(S-b=\dfrac{1}{2}Pl\\\\2(S-b)=Pl\ [\text{cross-multiplying}]\\\\l=\dfrac{2(S-b)}{P}\)
So, the expression is \(\dfrac{2(S-b)}{P}\) for the slant height.
If Sarah wanted to include a 15 percent gratuity, based on the total cost of the computer repair, excluding shipping, how would you find her new total cost?
can someone help plz
Answers
Answer:
C + 15%
Step-by-step explanation:
C = total cost of the repair
She would have to add 15% to the total cost of the repair.
What is the M? Will mark brainlist if correct
Answers
When the first letter of a variable name is uppercase, as in hourlywage, the format is known as?
Answers
What is the arc length of a circle that has an 8-inch radius and a central angle that is 95
degrees? Use 3.14 for TT and round your answer to the nearest hundredth.
Answers
Answer:
13.26
Step-by-step explanation:
The formula for arc length is 2πr(\(\frac{angle}{360}\))
Then all you have to do, is sub your values into it
A tank is filled with 2 gallons of propane. The tank is being used to fuel a heater that uses propane at a rate of 0.5 gallons per hour.
Answers
Answer:
fhiuqhficu3f
Step-by-step explanation:
Answer:
4 hours
Step-by-step explanation:
take 2 divides with 0.5 to found out how many it took to run out of fuel
hours
Please help! Correct answer only!
In a raffle, one ticket out of 1,000 will win a $870 prize, one ticket will win a $820 prize, and one ticket will win a $740 prize. The rest will win nothing. If you have a ticket, what is the expected payoff?
Answers
Answer:
" Expected Payoff " ⇒ $ 1.56 ; Type in 1.56
Step-by-step explanation:
Consider the steps below;
\(Tickets That Can Be Entered - 1 Ticket,\\Total Tickets Entered - 1000 Tickets,\\\\Proportion - 1 / 1000,\\Money One ( First Ticket ) = 820 Dollars,\\Money One ( Second Ticket ) = 740 Dollars,\\\\Proportionality ( First ) - 1 / 1000 = x / 820,\\Proportionality ( Second ) - 1 / 1000 = x / 740\\\\1 / 1000 = x / 820,\\1000 * x = 820,\\x = 820 / 1000,\\x = 0.82,\\\\1 / 1000 = x / 740,\\1000 * x = 740,\\x = 740 / 1000,\\x = 0.74\\\\Conclusion ; " Expected Payoff " = 0.82 + 0.74 = 1.56\)
Solution; " Expected Payoff " ⇒ $ 1.56
A circle has a circumference of 7{,}8507,8507, comma, 850 units. What is the radius of the circle?
Use 3. 14 for pi and enter your answer as a decimal
Answers
7,850 = 2 * 3.14 * r
Now, we'll solve for r:
7,850 = 6.28 * r
r = 7,850 / 6.28
r ≈ 1,250
So, the radius of the circle is approximately 1,250 units.
How do you simplify (2−i) / (5+i) ?
Answers
To simplify \(\frac{2-i}{5+i} = \frac{9}{26} -\frac{7}{26} i\) , multiply the numerator and denominator by the conjugate of the denominator.
A complex number's conjugate A+bi equals a-bi. A real number is the result of a complex number and its conjugate. That fact will be used here.
\(\frac{2-i}{5+i} =\frac{2-i}{5+i} . \frac{5-i}{5-i}\)
\(= \frac{(2-i)(5-i)}{(5+i)(5-i)}\)
\(=\frac{10-2i-5i-1}{25-5i+5i+1}\)
\(=\frac{9-7i}{26}\)
\(=\frac{9}{26}-\frac{7}{26}i\)
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Find the value of x and y.
Answers
Answer:
Step-by-step explanation:
The figures are similar. The ratio of the perimeters is 8 : 5. Find X
Answers
Answer:
The answer is 25.6
Step-by-step explanation:
I just did the test and failed and found out that's the right answer
Answer:
8.5
Step-by-step explanation:
please mark me branliy
-6-9t+4=34 Simplify plz
Answers
Answer:
t = -4
Step-by-step explanation:
-6-9t+4=34
-9t=34+6-4
-9t=36
-t=36/9
-t = 4
t = -4
Answer:
t = -4
Step-by-step explanation:
-6-9t+4=34
Combine like terms
-9t -2 = 34
Add 2 to each side
-9t -2+2 = 34+2
-9t = 36
Divide by -9
-9t/-9 = 36/-9
t = -4