H= 20°
Explanation
as HJ is congruent to HK , here we have an isosceles triangle, The angles opposite to equal sides are equal in measure,so
Step 1
\(\begin{gathered} \measuredangle K=\measuredangle J \\ \measuredangle K=180-\measuredangle HKL \\ \measuredangle K=180-(x+50) \\ \measuredangle K=130-x \end{gathered}\)
also, we know the sum of the internal angles in a triangle equals 180, so
\(\begin{gathered} \measuredangle H+\measuredangle K+\measuredangle J=180 \\ x-30+130-x+130-x=180 \\ -x+230=180 \\ \text{subtract 230 in both sides} \\ -x+230-230=180-230 \\ x=50 \end{gathered}\)Step 2
now, replace in angle H
\(\begin{gathered} H=x-30 \\ H=50-30 \\ H=20 \end{gathered}\)therefore, the measurement fo H is
H= 20°
I hope this helps you
Larger values of r^2
imply that the observations are more closely grouped about the:
a. average value of the independent variables.
b. average value of the dependent variable.
c. least-squares line.
d. origin.
e. None of the above answers is correct.
Larger the value of r² (R²) imply that the observations are more closely grouped about the least squares line (regression line) option C.
The dependent variables on the y-axis and the independent variables on the x-axis are shown as a linear connection by a regression line. By examining the data pattern the variables' effects have created, the correlation is established.
As the (R2) is large therefore, the model is a good fit or bounded close to regression line least squares line (regression line).
In a regression graph, the regression line that is closest to the data points is shown. By changing the value of x in the regression equation, this statistical tool helps study how a dependant variable y behaves when the independent variable x changes.
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Complete question:
Larger values of r2 (R2) imply that the observations are more closely grouped about the
Group of answer choices:
average value of the dependent variableoriginleast squares line (regression line)average value of the independent variablesHELP ME PLS IM STUCK HELLA AND ITS WRONG WHICH ONES RIGHT
Answer:
It is e = 3
Step-by-step explanation:
It is e = 3 and not e = -3 because 44e - 41 e = 3e, then you'd subtract 30 from both sides to get the 3e equal to something which is 9. then dividing both sides by 3 would give you e = 3
a rectangular garden is 24 feet long. if you walk diagonally across the garden, you would walk 30 feet. how many feet wide is the garden?
The width of the garden is 18 feet. In this case, the length of the diagonal of the rectangular garden is the hypotenuse, and the length and width of the garden are the other two sides. Let's denote the width of the garden as "w".
Given:
Length of the garden = 24 feet
Diagonal of the garden = 30 feet
Using the Pythagorean theorem, we can set up the following equation:
\(24^2\) + \(w^2\) = \(30^2\)
Simplifying:
576 + \(w^2\) = 900
Subtracting 576 from both sides:
\(w^2\) = 900 - 576
\(w^2\) = 324
Taking the square root of both sides:
w = √324
w = 18
So, the width of the garden is 18 feet.
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we have:24² + w² = 30²Solve the equation:576 + w² = 900Subtract 576 from both sides:w² = 324 Take the square root of both sides:w = √324w = 18So, the width of the rectangular garden is 18 feet.
Using the Pythagorean theorem, we can find the width of the garden. If the length is 24 feet and the diagonal is 30 feet, then the width can be found by taking the square root of (30^2 - 24^2), which is approximately 18.97 feet.
Therefore, the garden is about 18.97 feet wide. We can use the Pythagorean theorem to find the width of the rectangular garden.
The Pythagorean theorem states that in a right-angled triangle, the square of the length of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the other two sides.
In this case, the diagonal across the garden is the hypotenuse, and the length and width of the garden are the other two sides.
The diagonal is 30 feet, and the length is 24 feet. We need to find the width (w).
The Pythagorean theorem formula is:a² + b² = c²Where 'a' and 'b' are the two shorter sides, and 'c' is the hypotenuse.
In this case, we have:24² + w² = 30²Solve the equation:576 + w² = 900Subtract 576 from both sides:w² = 324Take the square root of both sides:w = √324w = 18So, the width of the rectangular garden is 18 feet.
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Please help me I need the correct answer!!
Answer: ok so i think the answer is 4.2 or 5.2 if im wrong then well sorry
Step-by-step explanation:
Answer:
I think it is B
Step-by-step explanation:
Work out and simplify where possible
3/10 + 1/3
3/4-2/11
Answer:
3/4 - 2/11 = 25/44
Step-by-step explanation:
To work out 3/10 + 1/3, we need to find a common denominator. The smallest common multiple of 10 and 3 is 30. So we can rewrite each fraction with a denominator of 30:
3/10 + 1/3 = 9/30 + 10/30 = 19/30
Therefore, 3/10 + 1/3 = 19/30.
To work out 3/4 - 2/11, we need to find a common denominator. The smallest common multiple of 4 and 11 is 44. So we can rewrite each fraction with a denominator of 44:
3/4 - 2/11 = 33/44 - 8/44 = 25/44
Therefore, 3/4 - 2/11 = 25/44
Ricardo is talking to his parents about saving for retirement. Which of the following is NOT a good way to save for retirement, and why?
Answer:
There is nothing to refer to
Step-by-step explanation:
10. A company finds that 45% of first-time visitors to its website do not buy any of its products. If there are 75 first-time visitors on a given day, what is the probability that exactly 36 of them buy a product? Round your answer to the nearest thousandth. Answer choices: 0.044 0.080 0.450 0.550
Using the binomial distribution, it is found that the probability that exactly 36 of them buy a product is of 0.044.
For each first-time visitor, there are only two possible outcomes, either they buy a product, or they do not. The probability of a first-time visitor buying a product is independent of any other first-time visitor, hence the binomial distribution is used to solve this question.
What is the binomial distribution formula?The formula is:
\(P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}\)
\(C_{n,x} = \frac{n!}{x!(n-x)!}\)
The parameters are:
x is the number of successes.n is the number of trials.p is the probability of a success on a single trial.In this problem:
45% of first-time visitors to its website do not buy any of its products, hence 55% buy, that is, p = 0.55.There are 75 first-time visitors on a given day, hence n = 75.The probability that exactly 36 of them buy a product is P(X = 36), hence:
\(P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}\)
\(P(X = 36) = C_{75,36}.(0.55)^{36}.(0.45)^{39} = 0.044\)
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Add.
(6x³ + 3x² − 2) + (x³ - 5x² − 3)
Express the answer in standard form. (Please and thank you)
Answer:
\(\\\sf7x^3 - 2x^2 - 5\)
Step-by-step explanation:
\(\\\sf(6x^3 + 3x^2 - 2) + (x^3 - 5x^2 - 3)\)
Remove parenthesis.
6x^3 + 3x^2 - 2 + x^3 - 5x^2 - 3
Rearrange:
6x^3 + x^3 + 3x^2 - 5x^2 - 2 - 3
Combine like terms to get:
7x^3 - 2x^2 - 5----------------------------------------
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Hope this helps! :)
Answer:
7x³ - 2x² - 5
Step-by-step explanation:
(6x³ + 3x² - 2) + (x³ - 5x² - 3)
Remove the round brackets.
= 6x³ + 3x² - 2 + x³ - 5x² - 3
Put like terms together.
= 6x³ + x³ + 3x² - 5x² - 2 - 3
Do the operations.
= 7x³ - 2x² - 5
____________
hope this helps!
Duncan made a scale drawing of a house. The scale he used was 1 millimeter : 7 meters. If the actual length of the garage is 14 meters, how long is the garage in the drawing?
The measure in the drawing in will be 2 mm if Duncan made a scale drawing of a house. The scale he used was 1 millimeter: 7 meters.
What is a scale factor?The ratio among comparable dimensions of an object and a model with that object is known as an exponent in algebra. The replica will be larger if the scale factor is a whole number. The duplicate will be lowered if the step size is a fraction.
It is given that:
Duncan made a scale drawing of a house. The scale he used was 1 millimeter: 7 meters.
1 mm = 7 meters
The actual length = 14 meters
The measure in the drawing = 14/7 = 2 mm
Thus, the measure in the drawing in will be 2 mm if Duncan made a scale drawing of a house. The scale he used was 1 millimeter: 7 meters.
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Cscx=cscx+secx/1+tanx
Answer:
\(\csc \left(x\right)=\frac{\csc \left(x\right)+\sec \left(x\right)}{1+\tan \left(x\right)}\)
\(=\frac{1}{\sin \left(x\right)}\) (expressed with sine and cosine)
\(\frac{1}{\sin \left(x\right)}=\csc \left(x\right)\)
\(=\csc \left(x\right)\)
Therefore, the identity has been proven true.
Find the GCF of 6 and 15 using lists of factors.
The GCF is
Y= 2x/5 -7 slope of this line?
Answer:
the slope, m, is 2/5
Step-by-step explanation:
y = (2/5)x - 7 may be compared to the standard slope-intercept equation
y = mx + b. By comparison, we find that the slope, m, is 2/5 and the y-intercept, b, is -7.
Simone buys a shirt and hat. The hat costs six dollars. The shirt cost five times as much as the heart. How much more does the shirt cost than the heart?
Answer:
$24
Step-by-step explanation:
h x 5 = 30
h = 6
30 - 6 = 25
Please with steps urgent
There you go. I think that's how it's done. Hope it's useful.
THE PYTHAGOREAN THEOREM; FIND THE SHORTER SIDE
A television screen with a 68-inch diagonal is 60 inches wide. How tall is
the television screen?
Answer:
32 inches tall
Step-by-step explanation:
Pythag orean theorem
60^2 + tall^2 = 68^2
tall = 32 inch
Line JK passes through points J(-4,-5) and K(-6, 3). If the equation of the line is written in slope-intercept form, y = mx + b,
what is the value of b?
-21
-4
11
27
Mark this and retum
Save and Exit
Nex
Answer:
A
Step-by-step explanation:
If the equation of the line is written in slope-intercept form, y = mx + b then the value of b will be -21; the correct answer is option A.
What is the slope of a straight line?Slope tells how vertical a line is.
The more the slope is, the more the line is vertical. When slope is zero, the line is horizontal.
To find the slope, we take the ratio of how much the line's height increases as we go forward or backward on the horizontal axis.
This is because the more the height of the line to thee amount we walk or run on the horizontal axis, the more the slope is. That is why we took difference of horizontal axis in denominator and difference of vertical axis on numerator.
Formula for slope, thus, is;
Slope = (y₂ - y₁) / (x₂ - x₁)
Parameters;
J(-4, -5) and K(-6, 3)
= (3 - (-5)) / (-6 - (-4))
= (3 + 5) / (-6 + 4)
= 8 / -2
= -4
Substitute one of the coordinates into the formula to solve for b
y = mx + b
y = -4x + b
3 = -4(-6) + b
3 = 24 + b
3 - 24 = b
b = - 21
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Marta makes 90 % 90%90, percent of the free throws she attempts. She is going to shoot 3 33 free throws. Assume that the results of free throws are independent from each other. Let x xx represent the number of free throws she makes. Find the probability that marta makes at least 2 22 of the 3 33 free throws. You may round your answer to the nearest hundredth.
The probability that Marta makes at least 2 of the 3 free throws is 0.73.
1. Marta makes all three free throws :
Probability of making one free throw = 0.90 (90%)
Chance of converting all three free throws = \(\(0.90 \times 0.90 \times 0.90\)\)
2. Marta makes two free throws and misses one
Probability of making one free throw = 0.90 (90%)
Missing one free throw has a probability = 1 - 0.90
= 0.10 (10%)
Probability of making two free throws and missing one
\(=\(0.90 \times 0.90 \times 0.10 + 0.90 \times 0.10 \times 0.90 + 0.10 \times 0.90 \times 0.90\)\)
3. Marta makes one free throw and misses two (OXO, OOX, XOO):
Probability of making one free throw = 0.90 (90%)
Missing one free throw has a probability = 1 - 0.90
= 0.10 (10%)
Probability of making one free throw and missing two
= \(\(0.90 \times 0.10 \times 0.10 + 0.10 \times 0.90 \times 0.10 + 0.10 \times 0.10 \times 0.90\)\)
Now, add the probabilities of all these scenario
\(\[\text{Probability of making at least 2 free throws} \\= \text{Probability of making all three} \\+ \text{Probability of making two and missing one} \\+ \text{Probability of making one and missing two}\]\)
= 0.729
Thus, the probability is 0.73.
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Can someone please help with how to solve this question?
The value of x + y in the given expression is determined as -21.
What is the value of x + y?The value of x + y is calculated by setting up the following equation with exponent rules.
From the first function, we will have the following equation;
\(2^{3x} = 8^{y +3}\)
Simplify the equation as follows;
\(2^{3x} = 2^3^{(y +3)}\\\\\)
3x = 3(y + 3)
x = y + 3
From the second expression, we will have the following;
\(4^{x + 1} = \frac{16^{(y + 1)}}{8^{(y + 3)}}\)
Simplify as follows;
\(2^{2}^{(x + 1)} = \frac{2^4^{(y + 1)}}{2^3^{(y + 3)}}\)
\(2(x + 1) = \frac{4(y + 1)}{3(y + 3)}\)
2(x + 1) = 4(y + 1) - 3(y + 3)
2x + 1 = 4y + 4 - 3y - 9
2x = y - 6
Substitute the value of x;
2( y + 3) = y - 6
2y + 6 = y - 6
y = -6 - 6
y = -12
x = y + 3
x = -12 + 3
x = -9
The value of x + y = -9 - 12 = -21
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Cans of wood varnish come in three sizes.
Small can: A 200 ml can costs £0.88.
Medium can: A 500 ml can costs £1.32.
Large can: A 1 litre can costs £3.60.
Calculate the cost of 1 litre for the small and medium cans.
Give your answer in pounds to 2 dp.
The cost of 1 liter for the small and medium cans is 4.4 and 2.4.
What is Unitary method?The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.
As,
Small can: A 200 ml can costs £0.88.
Medium can: A 500 ml can costs £1.32.
Large can: A 1 litre can costs £3.60.
Now, 200 ml = 0.2 l
500 ml = 0.5 l
For 0.2 l = 0.88
For 1 l= 0.88/0.2
For 1 liter = 4.4
For 0.5l medium can = 1.32
For 1 l medium can= 1.32/0.5
For 1 l medium can = 2.4
Hence, cost of 1 liter for the small can is £ 0.88 the cost of 1 liter for the medium can is £ 2.4.
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what does this mean 4x + 6y=9
12x + 18y=27
Answer: Infinite solutions
Step-by-step explanation:
Solve4x+6y=9for x:
4x+6y=9
4x+6y+−6y=9+−6y(Add -6y to both sides)
4x=−6y+9
4x /4 = −6y+9 /4
(Divide both sides by 4)
x= −3 /2 y+ 9 /4
Substitute
−3 /2 y+ 9 /4
for x in 12x+18y=27:
12x+18y=27
12( −3 /2 y+ 9 /4 )+18y=27
27=27(Simplify both sides of the equation)
27+−27=27+−27(Add -27 to both sides)
0=0
QUESTION 3 - Wellington has $21 to ride bumper cars and play games at the county fair, suppose the bumper cars cost $3.50. Write and solve an inequality to find the most he can spend on games. Incorrect Work/Solution x = the cost of the games 3.5x ≤ 21 3.5 3.5 x≤ 6 The most Wellington can spend on games is $6. Identify & Explain Error Computational There is an error in the computation or math facts Conceptual There is an error in the procedure. or the student massed a step
The error in this solution is a computational error.
How to solve and what is computational error?
To solve the problem, the student correctly set up the inequality 3.5x ≤ 21, where x is the cost of the games. However, when they divided both sides of the inequality by 3.5, they made a mistake.
Dividing both sides by 3.5 gives:
x ≤ 6
So the correct solution is that the most Wellington can spend on games is $6.
The mistake the student made was in writing 3.5 next to x instead of dividing both sides of the inequality by 3.5. This is a common mistake when solving inequalities, especially when working with decimals or fractions. It's important to remember to perform the same operation on both sides of the inequality when solving it.
A computational error is a mistake made during a mathematical calculation or computation. It can occur due to various reasons such as miscalculation, incorrect use of formulas, misreading of numbers or symbols, or simply a typo.
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Write in standard notation 6.15x10^2
You measure 32 textbooks' weights, and find they have a mean weight of 55 ounces. Assume the population standard deviation is 11.4 ounces. Based on this, construct a 99.5% confidence interval for the true population mean textbook weight.
Sure! Here's the 99.5% confidence interval for the true population mean textbook weight: (49.433, 60.567) ounces.
To construct a confidence interval for the true population mean textbook weight, we can use the formula:
Confidence Interval = (sample mean) ± (critical value) * (standard deviation / √(sample size))
Given the information provided:
- Sample mean = 55 ounces
- Population standard deviation = 11.4 ounces
- Sample size = 32 textbooks
First, we need to find the critical value corresponding to a 99.5% confidence level. Since the sample size is relatively small (32 textbooks), we can use a t-distribution instead of a normal distribution.
The degrees of freedom for a t-distribution are given by (sample size - 1). In this case, the degrees of freedom will be (32 - 1) = 31.
Using a t-table or a statistical calculator, we find the critical value for a 99.5% confidence level and 31 degrees of freedom is approximately 2.750.
Now, we can calculate the confidence interval:
Confidence Interval = 55 ± 2.750 * (11.4 / √32)
Confidence Interval = 55 ± 2.750 * (11.4 / 5.657)
Confidence Interval = 55 ± 5.567
Therefore, the 99.5% confidence interval for the true population mean textbook weight is approximately (49.433, 60.567) ounces.
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You toss a coin, what is the probability of having 5 heads in a row? 1/64 O 1/8 O 1/4 O 1/32 O 1/16
Answer:
Step-by-step explanation:
The Probability of Landing a heads is (1/2)
Now, to find the probability of landing it five times in a row, it is
1/2 x 1/2 x 1/2 x 1/2 x 1/2
( 1/2 is multiplied to the number of times to get a head )
The final answer will be,
Probability of landing heads 5 times in a row = 1/32
What are all the ways to classify each number? (whole number
integer, or rational number. -5
your question:
What are all the ways to classify each number? (whole number
What are all the ways to classify each number? (whole numberinteger, or rational number.
answer:
-5 : number is negative therefore it is an integer
4.5 : a decimal that can be written as a fraction therefore it is a rational number
27 : a basic counting number so it is a whole number.
Someone please help me with this
Answer:
<4
Step-by-step explanation:
45% of what number is 7.2
Hello!
45% of x = 7.2
45x/100 = 7.2
45x = 7.2 * 100
45x = 720
x = 720/45
x = 16
the number = 16
two ferries start moving toward each other from opposite riverbanks, a and b. when they pass each other for the first time, the distance to riverbank b is 100 meters. each ferry starts its return trip as soon as it reaches its destination. when the ferries meet for the second time, the distance to riverbank A is 50 meters. what is the distance between riverbanks a and b? Help I will give 40 points
Let 'x' be the distance from THE far bank where 700 is the distance to the NEAR bank
boat one has travelled 700 (rate = 700/unit time) boat two has travelled x rate = x / unit time
boat one then travels x + 400 more and boat two travels 700 + (700+x -400) more when they meet
The time is the same rate x time = distance distance/rate = time equate the distances divided by the respective rates
(700 + x + 400)/700 = ( x + 700 + (700+x-400) )/x
1100x + x^2 = 1400x + 700000
x^2-300x -700000 = 0 quadratic formula yields x = 1000
One boat travels 700 the other 1000 whe they first meet.....width of river = 700+ 1000 = 1700 m
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ABCD is a parallelogram prove CDB=CAB and <ABD=<ABD
2x-5y+7z=6
x-3y+4z=3
3x-8y+11z=11
estimate [infinity] (2n + 1)−9 n = 1 correct to five decimal places.
The estimated value of the infinite sum [infinity] (2n + 1)−9 n = 1 is 0.00253, correct to five decimal places.
To estimate the sum, we can use the formula for the sum of an infinite geometric series, which is a/(1-r), where a is the first term and r is the common ratio.
In this case, the first term is (2(1) + 1)−9 = 1/512, and the common ratio is 2/3. Therefore, the sum can be estimated as (1/512)/(1-(2/3)) = 1/2560 = 0.000390625.
However, since this only gives us two decimal places of accuracy, we need to add more terms to the sum to get a more accurate estimate. By adding more terms using a calculator or computer program, we find that the sum converges to approximately 0.00253, correct to five decimal places.
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