In Right Angled Triangle the lengths of the altitude of a hypotenuse is the geometric mean of the lengths of the segments of each of the legs is TRUE
What is a Right angled triangle?
A triangle is said to be right-angled if one of its angles is exactly 90 degrees. The total of the other two angles is 90 degrees. Perpendicular and the triangle's base are the sides that make up the right angle. The longest of the three sides, the third side is known as the hypotenuse.
The right triangle's three sides are interconnected. The Pythagorean Theorem explains this connection. This theorem states that the Hypotenuse2 = Perpendicular2 + Base2.
The right angle, or 90°, is always one angle.The hypotenuse is the side with the 90° angle opposite.The longest side is always the hypotenuse.The other two inner angles add up to 90 degrees.Let assume a right-angled triangle ABC, right-angled at A.
Let AD be the perpendicular drawn from vertex A on hypotenuse BC, intersecting BC at D.
Now, In right-angle triangle ABC,
By using Pythagoras Theorem, we have
\(AB^2 +AC^2 = BC^2\)
Now, In right-angle triangle ABD
Using Pythagoras Theorem, we have
\(AB^2 =AD^2 + BD^2\)
Now, In right-angle triangle ACD,
\(AC^2 = AD^2+CD^2\)
On adding equation (2) and (3), we get
\(AB^2 +AC^2 = 2AD^2+ BD^2 +CD^2\)
Now, using equation (1), the above equation can be rewritten as
\(2AD^2 +CD^2+BD^2 = BC^2\)
can be further rewritten as
\(2AD^2 +BD^2 +CD^2 = (CD+BD)^2\\\\BD^2 +CD^2 +2(BD)(CD)=2AD^2 +BD^2 +CD^2\\\\(BD)(CD)=AD^2\)
AD is geometric mean of BD and CD
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an 18-foot extension ladder is placed 6 feet away from a house. how far up the side of the house does the ladder reach? (round to the nearest hundredth. enter only the number; do not include the unit of measurement, feet.)
The ladder reaches approximately 16.97 feet up the side of the house. Rounded to the nearest hundredth, it would be 16.97 feet.
To determine how far up the side of the house the ladder reaches, we can use the Pythagorean theorem, which states that in a right triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the other two sides.
In this case, the ladder acts as the hypotenuse of a right triangle, with one side being the distance from the base of the ladder to the house (6 feet) and the other side being the vertical distance we want to find. Let's call the vertical distance "x."
Using the Pythagorean theorem, we have:
(6^2) + (x^2) = (18^2)
36 + x^2 = 324
x^2 = 288
Taking the square root of both sides, we get:
x ≈ √288 ≈ 16.97
Therefore, the ladder reaches approximately 16.97 feet up the side of the house. Rounded to the nearest hundredth, it would be 16.97 feet.
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An 18-foot extension ladder is placed 6 feet away from a house. How far up the side of the house does the ladder reach? (Round to the nearest hundredth).
The outside temperature can be estimated based on how fast crickets chirp.
At 104 chirps per minute, the temperature is 63"F.
At 176 chirps per minute, the temperature is 81"F.
Using this information, you can make a formula that relates chirp rate to temperature. Assume the relationship is linear, that is the points form a straight line when plotted on a graph. What is the temperature if you hear 156 chirps per minute?
temperature: __"F
What is the temperature if you hear 84 chirps per minute?
temperature: __"F
The temperature is 77°F if you hear 156 chirps per minute and is 59°F if you hear 84 chirps per minute.
Given, the outside temperature can be estimated based on how fast crickets chirp. At 104 chirps per minute, the temperature is 63"F and at 176 chirps per minute, the temperature is 81"F. We need to find the temperature if you hear 156 chirps per minute and 84 chirps per minute.
Let the temperature corresponding to 104 chirps per minute be T1 and temperature corresponding to 176 chirps per minute be T2. The corresponding values for temperature and chirp rate form a linear relationship. Taking (104,63) and (176,81) as the two points on the straight line and using slope-intercept form of equation of straight line:
y = mx + b
Where m is the slope and
b is the y-intercept of the line.
m = (y₂ - y₁)/(x₂ - x₁) = (81 - 63)/(176 - 104) = 18/72 = 0.25
Using point (104,63) and slope m = 0.25, we can calculate y-intercept b.
b = y - mx = 63 - (0.25 × 104) = 38
So the equation of the line is given by y = 0.25x + 38
a) Temperature if you hear 156 chirps per minute:
y = 0.25x + 38
where x = 156
y = 0.25(156) + 38y = 39 + 38 = 77
So, the temperature is 77°F if you hear 156 chirps per minute.
b) Temperature if you hear 84 chirps per minute:
y = 0.25x + 38
where x = 84
y = 0.25(84) + 38y = 21 + 38 = 59
So, the temperature is 59°F if you hear 84 chirps per minute.
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Fill in the blanks using < or >. (a) -3 ...... -4 (b) 6 ....... -20 (c) -8 ...... -2 (d) 5 ...... -7
\(\sf \bf {\boxed {\mathbb {ANSWER:}}}\)
(a) -3 \(\boxed{ > }\) -4
(b) 6 \(\boxed{ >}\) -20
(c) -8 \(\boxed{ < }\) -2
(d) 5 \(\boxed{ > }\) -7
\(\large\mathfrak{{\pmb{\underline{\orange{Mystique35 }}{\orange{☂}}}}}\)
Which of the tables represents a function? (four points)
Answer:
table b
Step-by-step explanation:
table b is the answer
The sum of three consecutive integers is 42. Which of the equations could represent this relationship? Select the two correct answers. x + (x + 1) + (x + 2) = 42 x + (x + 2) + (x + 4) = 42 (x minus 1) + x + (x + 1) = 42 (x minus 2) + x + (x + 2) = 42 x + 2 x + 3 x = 42
There are two ways to represent this equation: "x + (x + 1) + (x + 2) = 42" and "(x minus 1) + x + (x + 1) = 42".
What is equation?The definition of an equation in algebra is a mathematical statement that demonstrates the equality of two mathematical expressions. For instance, the equation 3x + 5 = 14 consists of the two equations 3x + 5 and 14, which are separated by the 'equal' sign. A mathematical phrase with two equal sides and an equal sign is called an equation. An example of an equation is 4 + 6 = 10.
Here,
There are 2 ways,
x+(x+1)+(x+2)=42
(x-1)+x+(x+1)=42
This equation can be written as "x + (x + 1) + (x + 2) = 42" or "(x minus 1) + x + (x + 1) = 42," respectively.
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write the absolute value function as a piecewise function y=6|x-3|
giving brainliest and thanks help plz asap
The answer is C. you're welcome.
true or false: if samples are randomly chosen, every member of the target population could have been in the sample even though only a fraction of the target population ends up in our sample.
Answer:
TRUE.
Step-by-step explanation:
It is true that every member of the target population has the possibility of being included in the sample if the samples are chosen randomly.
However, it is also possible that not all members of the target population will be included in the sample, even if the samples are chosen randomly.
This is because the size of the sample will typically be smaller than the size of the entire target population, so not every member of the population will be included in the sample.
Solve the problem algebraiclly i
Answer:
x=-3.75
Step-by-step explanation:
17 = -13-8x
30=-8x
x=-3.75
Answer:
Step-by-step explanation:
17=-13-8x
Step 1: add 13 to both sides
30=-8x
Step 2: divide by -8
-3.75=x
PLEASE HELP!!!!!!!! I WILL MARK BEAINLIEST
Answer:
7/8
Step-by-step explanation:
1 and 1/8
2 and 2/8
I need help with this
Aiden has two books. One book has a mass of 228 grams, and the other has a mass of 169 grams.
What is the difference in the mass of the books? Enter the answer in the blank.
_____ grams
Answer:ufk
Step-by-step explanation:
whats the answer help me
Answer:
6- 8- 10 triangle with 10 as the hypotenuse
Step-by-step explanation:
In any right triangle the hypotenuse must be the longest side.
This is only true for the 6- 8- 10 with 10 as the hypotenuse.
Also using Pythagoras' identity
6² + 8² = 10²
The sum of two integers is 7, and the sum of their squares is 25. What is the product of these
two integers?
Answer:
x = 4, y = 3
x = 3, y = 4
Step-by-step explanation:
Set equation 2 equal to x or y
y = 7 - x
Sub in place of y in equation 1
x
2 + (7 – x)
2 = 25
x
2 + (7 – x)(7 – x)= 25
Set equal to zero
Expand Brackets and simplify
x
2 + 49 - 14x + x2 = 25
2x2
- 14x + 49 = 25
2x2
- 14x + 24 = 0
Factorise and remove a factor first if
possible!
x
2
- 7x + 12 = 0
(x – 4)(x – 3)= 0
x = 4 and x = 3
Sub values of x into ‘y = 7 – x’
x = 4, y = 3
x = 3, y = 4
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Let x be the number of years since 1998, let g(x) be the average monthly bill (in dollars) for mobile phone users in the United States, and let h(x) be the average number of minutes used by U.S. mobile phone users. Then g(x) and h(x) are as given g(x) = -0.27x³ + 1.40x² + 1.05x + 39.4, h(x) = -8.25x³ + 53.1x² - 7.82x + 138 Write a rational function ƒ(x) that gives the average price per minute x years after 1998.
The rational function ƒ(x) that represents the average price per minute x years after 1998 is given by ƒ(x) = g(x) / h(x), where g(x) = -0.27x³ + 1.40x² + 1.05x + 39.4 and h(x) = -8.25x³ + 53.1x² - 7.82x + 138.
To calculate the average price per minute x years after 1998, we need to find the ratio between the average monthly bill (g(x)) and the average number of minutes used (h(x)). Therefore, the rational function ƒ(x) is defined as ƒ(x) = g(x) / h(x).
Given that g(x) = -0.27x³ + 1.40x² + 1.05x + 39.4 and h(x) = -8.25x³ + 53.1x² - 7.82x + 138, we can substitute these expressions into the rational function to obtain the final formula: ƒ(x) = (-0.27x³ + 1.40x² + 1.05x + 39.4) / (-8.25x³ + 53.1x² - 7.82x + 138).
This rational function represents the average price per minute x years after 1998 based on the given average monthly bill and average number of minutes used by U.S. mobile phone users. By plugging in different values for x, you can evaluate the function and obtain the corresponding average price per minute for each year.
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what is the answer to
32z-48 using factoring
The answer to 32z - 48 using factoring is 3/2.
Given,
32z - 48
We have to find the answer using factoring:
Factoring:
Finding things to multiply together to produce an expression is known as factoring. It is comparable to splitting an expression into numerous smaller expressions.
Here,
32z - 48 = 0
Add 48 to both sides
32z - 48 + 48 = 0 + 48
32z = 48
Divide 32 on both sides
32z/32 = 48/32
z = 48/32
Now, we can factorize 48/32
Take 2 as common factor
(48/2) / (32/2) = 24/16
Again, take 2 as common factor
(24/2) / (16/2) = 12/8
Now, take 4 as common factor
(12/4) / (8/4) = 3/2
Here, z = 3/2
That is, the answer for 32z - 48 using factoring is 3/2.
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What is
-1 -2(3x-5)
-2 1/5(3x+1/2)
-3 0.5(5x-2.2)
Answer:
1. 6x+10
2. 3x+\(\frac{1}{2}\)/5
3. 2.5x-1.1
I'm not sure if I did it in the correct format. :(
3. numbers with square roots that are whole
they are called perfect square numbers
4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196 heres some hope that helps!
What is the domain and range
What is the x-intercept
What is the y-intercept
Answer:
Domain: (-∞,∞)
Range: (-∞,∞)
**All real numbers, ℝ is an alternative to (-∞,∞)
x-intercept: -3
y-intercept: 5
Find the most general real-valued solution to the linear system of differential equations.
To provide a general real-valued solution to a linear system of differential equations, specific equations need to be provided. Without the specific equations, it is not possible to determine the exact solution.
In general, a linear system of differential equations can be written in matrix form as follows:
dY/dt = AY,
where Y is a vector of functions, t is the independent variable, and A is a constant matrix.
To solve this system, one can use methods such as matrix diagonalization, eigenvalues, and eigenvectors, or the method of variation of parameters. These methods allow you to find the general solution of the system, which represents a family of solutions that satisfy the given equations.
It is important to note that the specific form of matrix A and the initial or boundary conditions if provided, will determine the exact solution to the system of differential equations.
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The mean amount of sleep needed for adults is 503 minutes per night. If the standard deviation for adult sleepers is [s]. What is the Z score associated with sleeping 503 minutes per night?
Answer:
Z score associated with sleeping 503 minutes = 0 minutes
Step-by-step explanation:
Given values of sleep per night for adults:
Mean value X = 503
Standard deviation σ = s
FInd:
Z score associated with sleeping 503 minutes
Computation:
⇒ P[X = 503]
⇒ P[(x - X) / σ] = [503 - 503] / s
⇒ Z score value = [0] / s
⇒ Z score value = 0
Z score associated with sleeping 503 minutes = 0 minutes
How many times larger is 6.42 x 106 than 428,000?
Answer:
Well so if we multiply 6.42*106=680.52.
then subtract 680.52-428000=427319.48
there you go:)
Step-by-step explanation:
1) The following are all least squares assumptions with the exception of:
A) The conditional distribution of u; given X; has a mean of zero.
B) The explanatory variable in regression model is normally distributed.
C) (Xi, Yi), i = 1,..., n are independently and identically distributed.
D) Large outliers are unlikely.
2) The interpretation of the slope coefficient in the model Yi = 30+ẞ1 In(Xi) is as follows:
A) a 1% change in X is associated with a ẞ1 % change in Y.
B) a 1% change in X is associated with a change in Y of 0.01 31.
C) a change in X by one unit is associated with a ẞ1 100% change in Y.
1) The following are all least squares assumptions with the exception of:
B) The explanatory variable in regression model is normally distributed.
Explanation:Least Squares AssumptionsThe assumption of Linearity is one of the least squares assumptions, which says that the relationship between the explanatory variable and the response variable is linear. The Constant Variance Assumption is another assumption, which states that the variance of the error terms is the same across all explanatory variable values.
The assumption of Independence requires that each data point is independent of all other data points.The Normality Assumption is another assumption, which states that the error terms are normally distributed. The fifth assumption is that the errors are random and that large outliers are unlikely. This is the only assumption that is not part of least squares regression.
2) The interpretation of the slope coefficient in the model Yi = 30+ẞ1 In(Xi) is as follows:
B) a 1% change in X is associated with a change in Y of 0.01 31.Explanation:The interpretation of the slope coefficient in the model Yi = 30+ẞ1 In(Xi) is as follows: a 1% change in X is associated with a change in Y of 0.01 31. Here, β1 is the slope coefficient and In(Xi) is the natural logarithm of Xi. This implies that a 1% increase in X results in a 0.0131 unit increase in Y, given that all other variables are kept constant.
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This is the formula for the
area of a triangle. Solve the
equation for height, A
Answer: 2A/base = Height
Step-by-step explanation:
\(A=\frac{base*height}{2} \\2A=base*height\\\frac{2A}{base} =height\)
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Answer:
To divide mixed fractions, you could first convert each to an improper fraction. Then, switch to a multiplication problem by multiply by the reciprocal of the divisor. Simplify and convert your answer back to a mixed fraction to get your answer!
Answer:
Hi
Step-by-step explanation:
Please pick me
The mean time required to repair breakdowns of a certain copying machine is 93 minutes. The company which manufactures the machines claims that breakdowns of its newer model are easier to fix. To test this claim, a sample of 18 breakdowns of the new model were observed, resulting in a mean repair time of 86.8 minutes with a standard deviation of 14.6 minutes. Using a significance level of a = 0.10, determine if the new copy machines are faster to repair. State clearly what your null and alternative hypotheses are, show your work, and state your conclusion.
A significance level of 0.10, we have enough evidence to conclude that the new copy machines have a significantly faster mean repair time compared to the older model.
To test if the new copy machines are faster to repair, we can set up the following null and alternative hypotheses:
Null Hypothesis (H₀): The mean repair time for the new copy machines is the same as the mean repair time for the older model.
Alternative Hypothesis (H₁): The mean repair time for the new copy machines is less than the mean repair time for the older model.
Let's perform a one-sample t-test to test these hypotheses. The test statistic is calculated as:
t = (sample mean - population mean) / (sample standard deviation / √(sample size))
Given:
Population mean (μ) = 93 minutes
Sample mean (\(\bar x\)) = 86.8 minutes
Sample standard deviation (s) = 14.6 minutes
Sample size (n) = 18
Significance level (α) = 0.10
Calculating the test statistic:
t = (86.8 - 93) / (14.6 / sqrt(18))
t = -6.2 / (14.6 / 4.24264)
t ≈ -2.677
The degrees of freedom for this test is n - 1 = 18 - 1 = 17.
Now, we need to determine the critical value for the t-distribution with 17 degrees of freedom and a one-tailed test at a significance level of 0.10. Consulting a t-table or using statistical software, the critical value is approximately -1.333.
Since the test statistic (t = -2.677) is less than the critical value (-1.333), we reject the null hypothesis.
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5/8 - 1/8 in simpelest form
Answer:
\(\frac{1}{2}\)
Step-by-step explanation:
\(\frac{5}{8}-\frac{1}{8}\\ \\ \frac{5-1}{8}\\ \\\frac{4}{8}\\ \\\frac{1*4}{2*4}\\ \\\frac{1}{2}\)
A self-selecting sample is Group of answer choices a good indicator of sample quality. not likely to be biased. guaranteed to be representative. not likely to be representative.
A self-selecting sample is not likely to be representative. The reason why a self-selecting sample is not likely representative would be discussed below.
What is self-selecting sample?A self-selection sample is determined by the individual that are used as data for the research. They are the ones that will determine the inclusion or exclusion of the sample units by either affirming or declining to participate.
The reason self-selecting sample is not likely to be representative is that it is too bias as the individuals that volunteered may not be able to satisfy the goals of the research.
Therefore, a self-selecting sample is not likely to be representative.
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Can somebody help me, please
Answer:
uh I don't even know what this is
Answer: x = 500
Step-by-step explanation:
Use the Pythagorean Theorem
a²+b²=c²
300² + 400² = x²
90000 + 160000 = x²
250000 = x²
√250000 = √x²
500 = x
hope i explained it :)
how to graph linear standard 3x−4y=24
Graph the linear equation. 3x-4y= 24
---------------------
Let x = 0, then y = -6
Let y = 0, then x = 8
----------------------------
Plot (0,-6) and (8,0) and draw a line thru them to get: