Answer:
90/4= 12.9
1*3/4= 0.75
Step-by-step explanation:
The location of Balloon C is 0.13 miles relative to the tower.
What is Ratio?The ratio is defined as a relationship between two quantities, it is expressed as one divided by the other.
What are Arithmetic operations?Arithmetic operations can also be specified by adding, subtracting, dividing, and multiplying built-in functions.
The operator that performs the arithmetic operations is called the arithmetic operator.
* Multiplication operation: Multiplies values on either side of the operator
For example 4*2 = 8
/ Division operation: Divides left-hand operand by right-hand operand
For example 4/2 = 2
Balloon A is 5 miles east and 8 miles south of the
tower.
Balloon B is 7 miles west and 10 miles north of the tower.
If Balloon C is located four-ninths the distance from Balloon A to Balloon B,
According to the question, AB distance is 21.64 miles
⇒ 21.64×4/9 = 9.61
⇒ 9.61 - 9.43 = 0.18
⇒ 0.18×7/10 = 0.13
Hence, the location of Balloon C is 0.13 miles relative to the tower.
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PLEASE HELP ME ANSWER QUESTION
Convert the logarithmic equation log_{b}(x)=y to exponential form b^{y}= x log_{a}(b)=cThe base is AnswerThe exponent is AnswerThe result is Answer
The conversion:
\(\begin{gathered} \log _b(x)\text{ = y} \\ b^y\text{ = x} \end{gathered}\)Applying the principle to the given logarithm equation:
\(\begin{gathered} In\text{ exponential form, }\log ^{}_ab\text{ = c} \\ \text{becomes:} \\ a^c\text{ = b} \end{gathered}\)\(\begin{gathered} \text{The base = a} \\ \text{the expoent = c} \\ \text{The result is a}^c\text{ = b} \end{gathered}\)For a research project, students are asked to study how often students at an online high school look at social
media while doing schoolwork.
1. Sofie decides to develop a survey.
(a) Give an example of a question she could ask on her survey.
(b) How could Sofie select a simple random sample of students to take her survey?
(c) She gives out 80 surveys but receives only 32 completed surveys. What are the sample and
population for Sofie’s research?
(d) Of the 32 students who completed surveys, 16 said they use social media while doing schoolwork. If
Sofie uses only the completed surveys, what conclusion could she make about the percent of all high
school students who use social media while doing schoolwork?
(a) Example question: "How often do you look at social media while doing schoolwork?
(b) Sofie can select a simple random sample of students by using a random number generator to assign a unique identification number to each student in the online high school.
(c) The sample for Sofie's research is the 32 completed surveys she received. These surveys represent the responses of a subset of the population. The population, in this case, refers to all the students at the online high school.
(d) If Sofie uses only the completed surveys, she can conclude that approximately 50% (16 out of 32) of the students who completed the survey reported using social media while doing schoolwork.
(a) Please select one of the following options: never, rarely, occasionally, frequently, or always."
(b) She can then use the random number generator again to select a specific number of students from the entire population of students, ensuring that each student has an equal chance of being selected. For example, if there are 500 students in total and Sofie wants a sample size of 50, she can generate 50 random numbers and select the corresponding students based on their identification numbers.
(d) However, it is important to note that this conclusion is specific to the sample of completed surveys and cannot be generalized to the entire population of high school students.
To make an inference about the percent of all high school students who use social media while doing schoolwork, Sofie would need a larger and more representative sample that covers a wider range of students in the online high school.
Additionally, she should consider potential biases in the sample, such as non-response bias if the students who chose not to complete the survey have different social media usage patterns compared to those who did respond.
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Find the inverse of f(x) = 2
Answer:
the inverse is option B.............
Two ships leave the harbor at the same time. One ship is traveling at 15 miles per hour on a bearing of N 25° W, while the other is traveling at 11 miles per hour on a course with a bearing of S 64° E. How far apart are they after 2 hours? Round your answer to the nearest tenth of a mile.
The two ships are approximately 34.2 miles apart after 2 hours.
The first ship traveling at 15 miles per hour on a bearing of N 25° W.
Displacement = Speed × Time
Displacement of the first ship = 15 mph × 2 hours = 30 miles
Displacement of the second ship traveling at 11 miles per hour on a bearing of S 64° E.
The displacement of the second ship can be calculated by breaking it down into its north-south and east-west components.
North-South Component = Speed ×Time × sin(Bearing)
North-South Component = 11 mph × 2 hours × sin(64°)
East-West Component = Speed × Time × cos(Bearing)
East-West Component = 11 mph × 2 hours × cos(64°)
Displacement of the second ship = √((North-South Component)² + (East-West Component)²)
Displacement of the second ship = √((22 × sin(64°))² + (22 × cos(64°))²)
The displacement of the second ship gives us approximately 16.3 miles.
Distance = √((Displacement of the first ship)² + (Displacement of the second ship)²)
Distance = √((30)² + (16.3)²)
The distance gives us approximately 34.2 miles.
Therefore, the two ships are approximately 34.2 miles apart after 2 hours.
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Pedro drives the same route to work on monday through friday. His route includes one traffic light. According to the local traffic department, there is a 55% probability that the light will be red when pedro reaches the light. Interpret the probability.
The probability of light being not red will be 0.018.
What is probability?
Probability is a branch of mathematics that deals with numerical descriptions of how likely an event is to occur or how likely a proposition is to be true. The probability of an event is a number between 0 and 1, where 0 indicates the event's impossibility and 1 indicates certainty.
Given data:
Pedro drives the same route to work and only he faces one traffic light on his route.
Chances of light being red = 55%
Therefore,
The probability of light being red p = 0.55
So, the probability that light is not red
q = 1 - 0.55
q = 0.45
Now, if we calculate the probability of light being not red for all 5 days from Monday to Friday
\(q'=q^5\\\\q'=(0.45)^5\\\\q'=0.018\)
Hence, we can conclude that the probability of light being not red will be 0.018.
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A shop has a sale that offers 20% off all prices. On the final day they reduce all the sale prices by 25%. Linz buys a radio on the final day. Work out the overall percentage reduction on the price of the radio.
Answer:
40%
Step-by-step explanation:
You can plug in 100 as the price of the radio to see how much the price decreased.
20% off of 100 will make it $80.
Then, with the 25% discount, it will be worth $60.
So, $40 was taken off, and 40÷ 100 is 0.4, so the overall percentage reduction was 40%
Write a function rule for “The output is eight more than one-seventh of the input x”
For any given value of x, plugging it into the function rule f(x) will yield the corresponding output value according to the described relationship.
The function rule that represents the given statement, "The output is eight more than one-seventh of the input x," can be expressed as follows:f(x) = (1/7)x + 8
In this function, f(x) represents the output or dependent variable, while x represents the input or independent variable. The function rule states that the output is obtained by taking one-seventh of the input x and adding eight to it.
By multiplying the input x by 1/7, we obtain one-seventh of x. Then, by adding 8 to this result, we obtain the final output of the function.
For any given value of x, plugging it into the function rule f(x) will yield the corresponding output value according to the described relationship.
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Suppose you work for the department of natural resources and you want to estimate , with 99 % confidence , the mean ( average ) length of all walleye fingerlings in a fish hatchery pond . you take a random sample of 10 fingerlings and determine that the average length is 7.5 inches and the sample standard deviation is 2.3 inches .
Reject the null hypothesis without success. Therefore, the test assertion is not supported by enough evidence.
what is standard deviation ?Data that have a low standard deviation tend to be grouped around the mean, while those with a high standard deviation are more dispersed. Just the average of all squared variances is used to calculate the standard deviation. Plotting the normal distribution curve with one standard deviation, or one sigma, above or below the average value .
Given that,
Point estimate = sample mean =
= 7.4
Population standard deviation = δ = 1.8
Sample size = n = 36
At 95% confidence level
α = 1 - 95%
α = 1 - 0.95 = 0.05
α/2 = 0.025
Zα/2 = Z0.025 = 1.96
Margin of error = E = Z
Reject the null hypothesis without success. Therefore, the test assertion is not supported by enough evidence.
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A company can manufacture x hundred for a totally cost of C =200 + 1500x -100x^2 find x if the total cost is 5,800
an instructor wants to study the variance among two 30-second trials of a tennis wall volley test. what statistic will the instructor probably calculate?
The tennis wall volley test has two 30-second trials, and a teacher is interested in analyzing the variation between them. The instructor will most likely determine the "intraclass correlation coefficient" statistic.
Explain the term intraclass correlation coefficient?An indicator of the validity of the ratings for clusters is the intraclass correlation coefficient, abbreviated ICC.
Data that is grouped together is referred to as a cluster. Instead than comparing two independent classes of data, ICC is used to detect correlations within a specific class of data.As was already noted, Pearson's r is the most often utilized correlation coefficient. When there are just one or two significant pairs from just one or two raters, Pearson's correlation coefficient is typically employed to measure inter-rater reliability. However, this intraclass correlation coefficient ought to be utilized if there are more pairs.A tennis wall volley test has two 30-second trials, and a teacher is interested in analyzing the variation between them.
Thus, the instructor will most likely determine the "intraclass correlation coefficient" statistic.
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The art teacher gave each student half a sheet of paper and told the students to color one fourth of their pieces of paper. What part of the original sheet did the students color?
Cual es el 5% de 80?
The perimeter of an equilateral triangle is 38 centimeters. Find the length of an
altitude of the triangle. Round to the nearest tenth.
Answer:
11.0 cm
P=38 cm
38/3=12.67cm length of one side
Base of triangle = 12.67/2 =6.34 cm
Use formula \(a^2+b^2=c^2\)
\(6.34^2+x^2=12.67^2\\\\=11.0 cm\)
x = altitude of triangle
The frequency table shows the ages of the actors
in a youth theater group. What percent of the
actors are 10 to 12 years old?
The percentage of youth that are category 10 to 12 is the quotient of their frequency to the total frequency
55% of the actors are 10 to 12 years old
How to determine the percentage?From the complete question, we have the following parameters
Age 10 - 12 = 22 youthsTotal youth = 40The percentage of youth in the age category 10 - 12 is then calculated as:
Percentage = Frequency of age category 10 - 12/Total frequency
This gives
Percentage = 22/40
Evaluate the quotient
Percentage = 55%
Hence, 55% of the actors are 10 to 12 years old
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pls help with these i need them quick
1. The transformation is: A. rotation 90° clockwise about the origin.
2. Based on the alternate exterior angles theorem, the value of x is: 2.
3. x = 10
4. The slope of the given line is: A. 2
How to Find the Slope of a Line?The slope of a line = change in y/change in x.
What is the Alternate Exterior Angles Theorem?The theorem states that alternate exterior angles are congruent if they each lie on lines that are parallel to each other.
1. The transformation that took UVWX to U'V'W'X' is: A. rotation 90° clockwise about the origin.
2. 26x - 2 = 50 [based on the alternate exterior angles theorem]
Solve for x
26x = 50 + 2
26x = 52
x = 52/26
x = 2
The value of x is: D. 2.
3. 9x + 15 + 6x + 15 = 180 [based on the same-side interior angles theorem]
Solve for x
15x + 30 = 180
15x = 180 - 30
15x = 150
x = 150/15
x = 10
The value of x is: C. 10
4. Using two points on the line, (1, 1) and (-1, -3), we have:
Slope of the line = (-3 - 1)/(-1 - 1) = -4/-2
Slope of the line = 2
The slope is: A. 2
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space of a certain matrix. 31. explain why a 2 2 matrix can have at most two distinct eigenvalues. explain why an n n matrix can ha
The maximum number of possible different eigenvalues is 2 when
det(A-I×λ)=0.
Given that,
We have to describe the reason why a 2x2 matrix can only have two different eigenvalues.
We know that,
Checking this out with straight calculations
Keep in mind that the eigenvalues of a matrix A are determined by:
det(A-I×λ)=0
Where I is the identity matrix, whose diagonal exclusively contains ones.
As a result, the size of the matrix determines the maximum number of eigenvalues. For instance, a 2x2 matrix corresponds to an identity matrix with just two members on the diagonal.
Therefore, The maximum number of possible different eigenvalues is 2 when det(A-I×λ)=0.
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what is the sum of (5m+9)+(9b-3)+(8c+6) simplified
Mae Ling earns a weekly salary of $365 plus a 5.0% commission on sales at a gift shop. How much she make in a workweek if she sold $4,800 worth of merchandise?
The amount that she make in a workweek if she sold $4,800 worth of merchandise will be $605.
How to calculate the value?A percentage is a value or ratio that may be stated as a fraction of 100. If we need to calculate a percentage of a number, we should divide it's entirety and then multiply it by 100.
Here, Mae Ling earns a weekly salary of $365 plus a 5.0% commission on sales at a gift shop.
The amount that she make in a workweek if she sold $4,800 worth of merchandise will be:
= $365 + (5% × $4800)
= $605
The amount is $605.
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Sydney purchased a used car for $3,500. Her state charges a 5% tax for the car, $85 for registration, $60 for a new title certificate, and $35 for a state safety and emissions inspection. How much does Sydney need to pay for these extra charges, not including the price of the car?
Answer:
$355
Step-by-step explanation:
85+60+35=180
5% of 3,500 is 175
175+180=355
so if i did the math right that means the answer is $355
Hopefully the right answer
help
1) find the value of x
2)find length of a side of the square
Answer:
x = 12 , s = 41
Step-by-step explanation:
The sides of a square are equal , so
4x - 7 = 3x + 5 ( subtract 3x from both sides )
x - 7 = 5 ( add 7 to both sides )
x = 12
Then
length of side s is
s = 4x - 7 = 4(12) - 7 = 48 - 7 = 41
If the diagonals of a quadrilateral divide each other proportionally prove that it is a trapezium.
If the diagonals of a quadrilateral divide each other proportionally, it is a trapezium.
Let's consider a quadrilateral ABCD, where the diagonals AC and BD intersect at point E. If the diagonals divide each other proportionally, it means that AE/CE = BE/DE.
To prove that the quadrilateral is a trapezium, we need to show that one pair of opposite sides is parallel.
Using the proportionality condition, we can rewrite it as (AE/CE) = (BE/DE) = 1.
By the Converse of the Basic Proportionality Theorem, we know that if two lines are cut by a transversal such that corresponding angles are equal, then the lines are parallel. In this case, AE is parallel to CD, and BE is parallel to AD.
Therefore, we have shown that AB || CD, which is the definition of a trapezium.
If the diagonals of a quadrilateral divide each other proportionally, it can be concluded that the quadrilateral is a trapezium.
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what is the answer to this? −1.2b−5.3≥1.9
Answer:
b≤−6
here u go
Answer:
b ≤ -6 ✅Step-by-step explanation:
To solve an inequality, we will solve just like a normal equation. The goal is to isolate b, so we can determine the set of values it can take on.
Step 1: Add 5.3We need to reverse the operation - 5.3, so we add 5.3.
-1.2b - 5.3 + 5.3 ≥ 1.9 + 5.3
-1.2b ≥ 7.2
Step 2: Divide by -1.2We need to reverse the multiplication that is multiplying b by -1.2, so we will divide. However, we must remember an important rule first.
Important: When we divide by a negative number in an inequality, we must reverse the inequality sign, so ≥ becomes ≤.
-1.2b / -1.2 ≥ 7.2 / -1.2
b ≤ -6 (remember to reverse the sign!)
Step 3: CheckWe now substitute our answer in and see if it is correct. We will use a number that is smaller than -6, for example, -8.
-1.2(-8) - 5.3 ≥ 1.9
9.6 - 5.3 ≥ 1.9
4.3 ≥ 1.9 ✅
We can check again with -6, since this and all numbers smaller than it should be a solution set.
-1.2(-6) - 5.3 ≥ 1.9
7.2 - 5.3 ≥ 1.9
1.9 ≥ 1.9 ✅
b ≤ -6 ✅solve for x in the diagram below
Answer:
x = 5
Step-by-step explanation:
8x and 50 form a right angle , then
8x + 50 = 90 ( subtract 50 from both sides )
8x = 40 ( divide both sides by 8 )
x = 5
Answer:
Right angles equal 90 degrees, so 90-50=40
40=8x
divide by 8 on both sides
x=5
Step-by-step explanation:
Twice a number, increased by the sum of the same number and five.
Answer:
2x+(x+5)
not 100% sure but this is what i got
Step-by-step explanation:
At 11:30 AM. two people leave their homes that are 18 miles apart and begin walking toward each other. If one person walks at a rate that is 2 mph faster than the other andthey meet after 1.5 hours, how fast was each person walking?
Answer:
\(5\text{ mph and 7 mph}\)Explanation:
Let the speed of the first person be x mph and the speed of the second person be y mph
Since one person's speed is faster than the other, we can have:
\(y\text{ = \lparen x + 2\rparen mph}\)Mathematically, distance equals the product of speed and time
The time traveled by each person is 1.5 hours
The distance traveled by each of them is:
\(\begin{gathered} 1.5\text{ }\times\text{ x = 1.5x miles} \\ 1.5(x+2)\text{ = \lparen1.5x + 3\rparen miles} \end{gathered}\)The sum of the two equals 18 miles
Thus:
\(\begin{gathered} 1.5x\text{ + 1.5x + 3 = 3x + 3 = 18} \\ 3x\text{ = 18-3} \\ 3x\text{ = 15} \\ x\text{ = }\frac{15}{3} \\ x\text{ = 5 mph} \end{gathered}\)Recall;
\(y\text{ = x + 2 = 5 + 2 = 7 mph}\)This means that the first person was walking 5 mph while the second was walking 7 mph
List all the numbers that are a distance from 6 away from the number 7
Let x be a number such that
\(|x-7|=6.\)Solving the above equation for x we get:
\(\begin{gathered} x-7=\pm6, \\ x=7\pm6, \\ x=1\text{ or x=13.} \end{gathered}\)Answer: The numbers that are a distance of 6 away from the number 7 are:
1, and 13.
What is the missing constant term in the perfect square that starts with x^2+14x
Answer:
x^2 + 14x + 49
Step-by-step explanation:
Complete the square:
x^2 + 14x
Take the coefficient of the x term, 14.
Divide by 2.
14/2 = 7
Square it.
7^2 = 49
Add this .
x^2 + 14x + 49
) use truth tables to determine if the statements are logically equivalent and explain how you reached your conclusion. p →q ∨r , and p∧~q→r
p → q ∨ r and p ∧ ~q → r are not logically equivalent based on our truth table analysis.
To determine if two statements are logically equivalent, we can use truth tables. A truth table is a table that lists all possible combinations of truth values for the propositions in a logical formula and the resulting truth value for the formula.
The first statement is: p → q ∨ r
The second statement is: p ∧ ~q → r
We can construct the truth tables for each statement and compare the resulting truth values.
Here's the truth table for the first statement:
p | q | r | q ∨ r | p → (q ∨ r)
T | T | T | T | T
T | T | F | T | T
T | F | T | T | T
T | F | F | F | T
F | T | T | T | T
F | T | F | T | T
F | F | T | T | T
F | F | F | F | T
Here's the truth table for the second statement:
p | q | ~q | p ∧ ~q | p ∧ ~q → r
T | T | F | F | T
T | F | T | T | T
F | T | F | F | T
F | F | T | F | T
Comparing the truth tables, we can see that the truth values for the two statements are not the same for all combinations of truth values for p, q, and r. Hence, the given two statements are not logically equivalent.
In conclusion, p → q ∨ r and p ∧ ~q → r are not logically equivalent based on our truth table analysis.
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26x + 13y = 39
.
Rearrange this equation so it is in the form y = mx + b
After you have rearranged the equation, identify the slope and the y-intercept.
If x = 6, what should y =? Show all necessary work and steps. Round any decimals to
1 place as necessary.
If y = -1, what should x =? Show all necessary work and steps. Round any decimals
to 1 place as necessary.
Answer:
Rearrange: y=-2x+3
if x=6 then y = -9
if y=-1 then x = 2
Step-by-step explanation:
Algebra
to rearrange here are the steps
26x+13y=39
First move x to other side by subtraction
13y= -26x+39
to get y as just y divide everything by 13. Since 13/13=1 or 13y/13= y
y=-2x+3