Answer:
52.02 ft
Step-by-step explanation:
We can use equation tan θ = opposite/adjacent to solve for the opposite side x.
tan40° = x / 62
62tan40° = x
x = 52.02 ft
The solution is Option A.
The height of the tree is given by x = 52.02 ft
What are trigonometric relations?
Trigonometry is the study of the relationships between the angles and the lengths of the sides of triangles
The six trigonometric functions are sin , cos , tan , cosec , sec and cot
Let the angle be θ , such that
sin θ = opposite / hypotenuse
cos θ = adjacent / hypotenuse
tan θ = opposite / adjacent
tan θ = sin θ / cos θ
cosec θ = 1/sin θ
sec θ = 1/cos θ
cot θ = 1/tan θ
Given data ,
Let the triangle be represented as ΔABC
Let the height of the triangle ABC be = x
Now , the base of the triangle ABC is BC = 62 feet
The angle of elevation is θ = 40°
Now , the height of the tree is the height of the triangle ABC and is given by the trigonometric relation ,
tan θ = opposite / adjacent
Substituting the values in the equation , we get
tan θ = x / 62
tan 40° = x / 62
Multiply by 62 on both sides of the equation , we get
x = tan 40° × 62
x = 0.83909963117 × 62
The value of x = 52.024 feet
Therefore , the value of x is 52.02 feet
Hence , The height of the tree is given by x = 52.02 ft
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what should be added to {1/-2 - 3/4 of -8/15} so that the sum is the product of -7/50 and 1 1/14 *for grade 7*
The value that is added on the left-hand side to make the equation equal is -1/100.
What are Mathematical operators?In mathematics, an expression is a group of numbers and operations. The components of a mathematical expression that perform an operation are as follows: multiplication, division, addition, and subtraction.
Given [1/-2 - 3/4 of -8/15],
to add a number so the sum equals the product of -7/50 and 11/14
let the number be x
according to the question,
[1/-2 - 3/4 of -8/15] + x = -7/50*11/14
taking LHS
[1/-2 - 3/4 of -8/15] = -1/2 - (3(-8)/60)
[1/-2 - 3/4 of -8/15] = -1/2 + 24/60
[1/-2 - 3/4 of -8/15] = (-30 + 24)/60
[1/-2 - 3/4 of -8/15] =-6/60 = -1/10
RHS
-7/50*11/14 = -77/700 = -11/100
substitute the values
[1/-2 - 3/4 of -8/15] + x = -7/50*11/14
-1/10 + x = -11/100
x = -11/100 + 1/10
x = (-11 + 10)/100
x = -1/100
Hence -1/100 is added to make the equation equal.
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Let
f(x) = {3x - 7}/{x + 1] Find the range of f.
Give your answer as an interval.
Answer: Range = (-∞, 3) U (3, ∞)
Step-by-step explanation:
The range is the set of all y-values in a function. The easiest and most straightforward way to find the range is to graph the function and find asymptotes, or locations on the graph where the function lacks y-values.
You can plug in a few points to the equation, as shown in this table below.
After you have your points, you can draw your function following the points, as shown in the next image. Notice the line at y = 3, where the function does not cross. Although it will get infinitely close to the line, the function will never meet or cross this point at any x-value. This is what is known as a "horizontal asymptote", and is not included in the range of the function.
We can represent this asymptote in a range, which is a representation of all possible y-values in the function. The possible y-values for this function start at negative infinity and end at infinity, but do not exist at y = 3, so we represent this through this mathematical expression:
Range = (-∞, 3) U (3, ∞)
sheffield corp. acquires a delivery truck at a cost of $53,000 on january 1, 2022. the truck is expected to have a salvage value of $11,500 at the end of its 4-year useful life.
Sheffield Corp. acquired a delivery truck for $53,000 on January 1, 2022, with an expected salvage value of $11,500 at the end of its 4-year useful life. the annual depreciation expense would be ($53,000 - $11,500) / 4 = $10,375.
The cost of the delivery truck, $53,000, represents the initial investment or the initial cost of the asset. The salvage value, $11,500, is the estimated residual value of the truck at the end of its useful life.
To determine the depreciation expense each year, we can use the straight-line depreciation method. This method allocates an equal amount of depreciation expense over the useful life of the asset.
The formula for calculating annual depreciation using the straight-line method is: (Initial cost - Salvage value) / Useful life.
In this case, the annual depreciation expense would be ($53,000 - $11,500) / 4 = $10,375.
Therefore, Sheffield Corp. would record a depreciation expense of $10,375 each year for the 4-year useful life of the delivery truck. This expense represents the gradual reduction in the value of the truck over time, reflecting its wear and tear and the usage it undergoes during its operational life.
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euler's formula, v − e f = 2, relates the number of vertices v, the number of edges e, and the number of faces f, of a polyhedron. solve euler's formula for e.
The formula to solve Euler's Formula for e, which relates the number of vertices v, the number of edges e, and the number of faces f, of a polyhedron is e = v + f - 2.
Euler's Formula, v − e + f = 2, is a relationship between the number of edges e, the number of vertices v, and the number of faces f in a polyhedron. The formula can be rearranged to solve for e which is e = v + f - 2. This formula can be used to find the number of edges in a polyhedron when the number of vertices and faces are known. Therefore, this formula is used to calculate the number of edges in a polyhedron. The formula states that the number of vertices, minus the number of edges, plus the number of faces is always equal to 2.
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Ariana has a deck that measures 16 feet by 24 feet. She wants to increase each
dimension by equal lengths so that its area is doubled. By how much should she
increase each dimension?
Can anyone help plss:)
Answer:
The answer would be 80.
Step-by-step explanation:
First you want to add 16 and 24.
Next you want to multiply that answer by 2.
Then you have your answer and I hope this helps
Exercise 8.5. Let X be a geometric random variable with parameter p = and let Y be a Poisson random variable with parameter A 4. Assume X and Y independent. A rectangle is drawn with side lengths X and Y +1. Find the expected values of the perimeter and the area of the rectangle.
Let X be a geometric random variable with parameter p = and let Y be a Poisson random variable with parameter A 4. Assuming X and Y independent, then the expected value of the perimeter of the rectangle is 2( + 5), and the expected value of the area is 5.
For the expected values of the perimeter and area of the rectangle, we need to calculate the expected values of X and Y first, as well as their respective distributions.
We have,
X is a geometric random variable with parameter p =
Y is a Poisson random variable with parameter λ = 4
X and Y are independent
For a geometric random variable with parameter p, the expected value is given by E(X) = 1/p. In this case, E(X) = 1/p = 1/.
For a Poisson random variable with parameter λ, the expected value is equal to the parameter itself, so E(Y) = λ = 4.
Now, let's calculate the expected values of the perimeter and area of the rectangle using the given side lengths X and Y + 1.
Perimeter = 2(X + Y + 1)
Area = X(Y + 1)
To find the expected value of the perimeter, we substitute the expected values of X and Y into the equation:
E(Perimeter) = 2(E(X) + E(Y) + 1)
= 2( + 4 + 1)
= 2( + 5)
To find the expected value of the area, we substitute the expected values of X and Y into the equation:
E(Area) = E(X)(E(Y) + 1)
= ( )(4 + 1)
= 5
Therefore, the expected value of the perimeter of the rectangle is 2( + 5), and the expected value of the area is 5.
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when using your calculator, please indicate the function used and the parameters you entered for the function. 1. The selling prices of various homes in a community follow a normal distribution with a mean of $276,000.00 and standard deviation of $32,000.00. a. Calculate the probability that the next home in the neighborhood will sell for less than $220,000.00. Label the mean, standard deviation, and indicate the appropriate area on the included graph of a normal distribution. b. Calculate the probability that the next home in the community will sell for less than $350,000.00 but more than $250,000.00. Label the mean, standard deviation, and indicate the appropriate area on the included graph of a normal distribution.
On the graph of the normal distribution, we would label the mean as 276,000, the standard deviation as 32,000, and shade the appropriate area to represent the probabilities we calculated.
To calculate the probabilities, we will use the normal distribution function on the calculator. The parameters we will enter are the mean, standard deviation, and the values we are interested in finding the probability for.
a. To find the probability that the next home will sell for less than $220,000.00, we need to calculate the z-score first.
z-score = (220,000 - 276,000) / 32,000 = -1.75
Using the calculator, we will enter the function:
normdist(-1.75, 0, 1, TRUE)
where -1.75 is the z-score, 0 is the mean, 1 is the standard deviation, and TRUE indicates that we want to find the area to the left of the z-score.
The result is 0.0401, which means there is a 4.01% chance that the next home will sell for less than $220,000.00.
b. To find the probability that the next home will sell for less than $350,000.00 but more than $250,000.00, we need to calculate the z-scores for both values.
z-score for $350,000 = (350,000 - 276,000) / 32,000 = 2.31
z-score for $250,000 = (250,000 - 276,000) / 32,000 = -0.81
Using the calculator, we will enter the function:
normdist(2.31, 0, 1, TRUE) - normdist(-0.81, 0, 1, TRUE)
where 2.31 and -0.81 are the z-scores for $350,000 and $250,000 respectively, 0 is the mean, 1 is the standard deviation, and TRUE indicates that we want to find the area to the left of the z-scores.
The result is 0.3758, which means there is a 37.58% chance that the next home will sell for less than $350,000.00 but more than $250,000.00.
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Which hypothesis should be written as an inequality? A. the null hypothesis B. the alternative hypothesis C. either the alternative or the null hypothesis
The hypothesis that should be written as an inequality is B. the alternative hypothesis.
The alternative hypothesis is a statement that contradicts the null hypothesis and is used to determine if there is a significant difference between two variables. It is often written as an inequality to show that there is a difference between the two variables being tested.
For example, if we are testing whether a new drug is more effective than a placebo, the alternative hypothesis would be written as "the new drug is more effective than the placebo," or in inequality form, "the effectiveness of the new drug > the effectiveness of the placebo."
In contrast, the null hypothesis is a statement that there is no significant difference between the two variables being tested. It is usually written as equality, such as "the new drug is equally effective as the placebo," or "the effectiveness of the new drug = the effectiveness of the placebo."
Therefore, the alternative hypothesis is the one that should be written as an inequality.
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A loan worth $1000 collects simple interest each year for 6 years. At the end of that time, a total of $1270 is paid back. Determine the percentage rate for this loan?
Answer:
The percentage rate is 4.5%
Step-by-step explanation:
The simple interest earned in this situation is $1270 - $1000, or $270.
the simple interest formula is i =prt.
Here, i = $270 = ($1000)(r)(6 yr).
$270
Then r = ------------------- = 0.045
$1000(6 yr)
The percentage rate is 4.5%
A sheet of metal that is 30cm wide and 600cm long is to used to make a rectangular eavestrough by bending the shett an equal amount along the dottedlines.Howmany centimeters should be turned up on each side to obtain the greatest volume for the eavestrough.Show all work
Answer:
The sheet should be turned up 7.5cm on each side to obtain maximum volume.
Step-by-step explanation:
If we make a rectangular eavesdrop, by bending the sheet along dotted line, then.
Height of eaves trough = x cm
Length of eaves trough = 600 cm
Width of eaves trough = (30 - 2x) cm
We know that Volume is given by:
V = Length · Width · Height
V = (x)(30 - 2x)(600)
V = -1200x² + 18000x
To maximize the volume, we take the derivative and put it equal to zero.
\(\frac{dV}{dx} =\frac{d}{dx}( -1200x^2 +18000x)=0\\\frac{d}{dx}( -1200x^2 +18000x) = 0\\-(2)1200x+18000=0\\-2400x+18000=0\\x=\frac{18000}{2400}\\ x=7.5cm\)
I need helpppp?!!!
What is the slope of the line??
Please give right answer
Answer: -1/2
Step-by-step explanation:
Slope=rise/run
Up 1 and to the left 2 which makes it a negative
The number of school buses needed to transport students on a field trip is given by the function
f(x) = where x represents the number of students going on the trip. What is the domain of this
40
function?
A. 'x is the set of all real numbers.
B. x is the set of all integers.
c. x is the set of all nonnegative integers.
D. x is the set of all nonnegative real numbers.
Answer:
Answer is C
I don't know properly
I hope you like it
Answer:
A
Step-by-step explanation:
1. You have the following function that is shown in the problem above:
f(x)=(x+3)/30
2. Then, the domain of the function f(x)=(x+3)/30 is:
All the real numbers (R)
3. Therefore, the correct answer for the exercise is the first option (Option A), which is:
A. x is the set of all real numbers.
The pull of gravity is different on Earth than on the Moon. An object that weighs 25 pounds on Earth weighs about 4 pounds on the Moon. An astronaut, wearing all the necessary gear, weighs 500 pounds on Earth.
How many pounds would the astronaut with gear weigh on the Moon?
pounds
The weight of the astronaut with gear on the moon is 80 pounds.
The pull of gravity is different on Earth than on the Moon as gravity depends on factors such as the mass of the celestial body, the radius of the celestial body, and the density of the celestial body.
The pull of gravity on Earth = 10 m/s²
Thus, Given:
Weight of object on Earth: 25 pounds
Weight is described as the product of mass and the acceleration due to gravity
Thus, 25 = 10 * mass
mass = 2.5 unit
Weight of the object on the Moon: 4 pounds
4 = 2.5 * acceleration due to gravity on the moon
Acceleration due to gravity on the moon = 1.6 m/s²
Weight of astronaut with gear on earth = 500 pounds
500 = mass * 10
mass = 50 units
Weight of astronaut with gear on earth = 50 * 1.6
= 80 pounds
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A secret code is designed by choosing a letter from the alphabet and then choosing a digit from 0 to 9.
Which equation below correctly represents the probability of choosing the secret code "7Q?"
P(7UQ) = P(7) + P(Q)
P(7UQ) = P(7) P(Q)
P (7nQ) = P(7) + P(Q)
P(7nQ) = P(7) PQ)
Answer:a
Step-by-step explanation:
Choice 4: P(7∩Q) = P(7) × P(Q)
Explanation in detail:
P(7∩Q) denotes the chance of selecting the secret code "7Q."
If A and B are distinct events, then
P(A∩B) = P(A) × P(B)
Let A be the occurrence of selecting a number between 0 and 9 and
Let B be the occurrence of selecting an alphabet.
A and B are clearly distinct entities.
Therefore,
P(7∩Q) = P(7) × P(Q)
Hope this helps!
Solve for x.
5(x - 10) = 30 – 15x
A. x = 1
B. x = 4
C. x = 5
D. x = 8
x=4
Step-by-step explanation:
Distrubutive property: 5x-50=30-15x
get x on one side: 5x-50+15x=30
combine like terms: 20x-50=30
subtract on both sides: 20x=30+50
20x=80
simplify: 20/20=80/20
x=4
Given: ABCD is a rhombus and △ACB ≅ △DBC
Prove: ABCD is a square
OnOff
Question
A composite figure is shown.
What is the total area of this figure?
164 sq. cm.
136 sq. cm.
216 sq. cm.
160 sq. cm.
Answer:
164 cm^2
Step-by-step explanation:
lets find square of triangle first
corner ABD is 90 degrees coz corner ABC is 180 degrees and EBC is 90
(sum of all angles of a quadrilateral is 360,
B = 360 - C - F - E
360 - 90 - 90 - 90 = 90)
BD = CF - DE
BD = 16 - 8 = 8 cm
S ABD = AB * BD / 2 (coz corner B is 90 degrees)
S ABD = 13 * 8 / 2 = 13 * 4 = 52 cm^2
lets find square of BEFC next
S BEFC = CF * EF ( B = C = F = E = 90 so thats a rectangle)
S BEFC = 16 * 7 = 70 + 42 = 112 cm^2
finally lets find total area
S = S ABD + S BEFC = 52 + 112 = 164 cm^2
An isosceles triangle has an angle that measures 50°. Which other angles could be in that isosceles triangle?
The answer choices are
65°
80°
50°
30°
Plz help
Answer:
80
Step-by-step explanation:
An isosceles has 2 angles that are the same so 50+50 is 100 so we have 80 degrees left to make a full triangle because all angles will always add up to 180 so 50+50+80 is 180 degrees
Use △ABC to find the value of x and the angle measures.
The measure of angle A, B, C are 60°,60°,60°
What is sum of angle in a triangle?A triangle is a closed, 2-dimensional shape with 3 sides, 3 angles, and 3 vertices. A triangle is also a polygon.
The sum of angle in a polygon is 180°. i.e
A+B + C = 180°
therefore we can say that;
2x+2x + 3x-30 = 180
7x -30 = 180
7x = 180+30
7x = 210
divide both sides by 7
x = 210/7 = 30
therefore ;
angle A = 2× 30 = 60°
angle B = 2×30 = 60°
angle C = 3×30-30 = 90-30 = 60°
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Where to find the slope and y intercept
Answer:
slope: 1
y-intercept: 3
Step-by-step explanation:
The y-intercept is where the line passes through the y axis. It passes through at 3. The slope is 1 because if you apply rise over run it is 1/1 which simplifies to 1.
Hope this helps :)
Answer:
y intercept = 3 slope or m=1
Step-by-step explanation:
y=3 m=1
can you please help me with this problem 2x + y = -9
Answer:
x = -9/2 - 1/2y
Step-by-step explanation:
2x + y = -9
2x = -9 - y
x = -9/2 - 1/2y
Liberty Middle School’s enrollment increased to 660 students. This is an increase of 10% over last year’s enrollment. What was last year’s enrollment?
Answer:
600
Step-by-step explanation:
Last years enrollment was 100% of the number.
This year, the enrollment went up by 10%, so now, it's 110% of last years number.
Let last year's enrollment be x.
110% of x is 660
1.1x = 660
x = 660/1.1
x = 600
Answer: 600
Answer:
600
Step-by-step explanation:
When 3 times a number is subtracted from 45 the result is 5 plus the number. what is the number?
Answer:
n = 10
Step-by-step explanation:
let the number be n , then
45 - 3n = n + 5 ( subtract n from both sides )
45 - 4n = 5 ( subtract 45 from both sides )
- 4n = - 40 ( divide both sides by - 4 )
n = 10
One of the primary goals of constructing a frequency distribution for quantitative data is to summarize the data in a manner that accurately depicts the data as a whole. True/False?
One of the primary goals of creating a frequency distribution for quantitative data is to properly represent the data as a whole. As a result, it is correct, as it accurately depicts the data as a whole.
what is a frequency distribution?Frequencies are organized into frequency distributions, which are visual displays, to make the information easier to understand. A frequency distribution can display absolute or relative frequencies, such as ratios or percentages. A frequency distribution can be represented by a graph or a frequency table. A frequency distribution can show both the exact number of observations and the proportion of observations that fall within each range. In the latter case, the distribution is referred to as a relative frequency distribution. The frequency of observation is the number of times it appears in the data. For example, the frequency of the number 9 in the following list of numbers is 5. (Because it happens five times). 1, 2, 3, 4, 6, 9, 9, 8, 5, 1, 1, 9
One of the primary goals of creating a frequency distribution for quantitative data is to properly represent the data as a whole.
As a result, it is correct, as it accurately depicts the data as a whole.
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guys please help this is a math question
Answer:
81.5
Step-by-step explanation:
<G and <H are congruent
<F and <I are congruent
so the last two angles in both triangles must also be congruent
this means that <K and <J are congruent
so we can create this equation: <K = <J
substitute the angles with what we know: 4\(y^{2}\) = 6\(y^{2}\) - 40
add 40 to both sides and subtract 4\(y^{2}\) from both sides: 40 = 2\(y^{2}\)
you get: 20 = \(y^{2}\)
root square on both sides: \(\sqrt{20}\) = \(\sqrt{y^{2} }\)
you get: y ≈ 4.5
substitute this into one of the equations for a missing variable:
6\(y^{2}\) -----> 6 (4.5 x 4.5) - 40
6 ( 20.25) - 40
121.5 - 40
81.5
Last year, Boris biked n miles. This year, he biked 281 miles. Using n, write an expression for the total number of miles he biked.
Answer:
we can't add a letter and a number so we leave it as shown in the picture above.
hope it helps.
Will give brainliest if correct!!
Answer:
The smallest increment is 10 V and the uncertainty is 5 V.
Help lol please lol no really lol
Answer:
B or the cone with base radius of 1 in and vertical height of 1 in
Answer:
B
Step-by-step explanation:
It's the only one that refers to a non 3D object. It is also not a cylinder and it has a 1 inch base not 2 inch. Hope this helped. Brainliest Pls?
Evaluate -b with exponent of 2 - 2bx with exponent of 2 on the x - x = -2
To solve the exercise, we replace x by -2 in the given expression:
\(\begin{gathered} -b^2-2bx^2-x \\ -b^2-2b(-2)^2-(-2) \end{gathered}\)Now, we operate:
\(\begin{gathered} -b^2-2b(-2)^2-(-2)=-b^2-2b(-2)\cdot(-2)^{}-(-2) \\ -b^2-2b(-2)^2-(-2)=-b^2-2b\cdot4+2 \\ -b^2-2b\mleft(-2\mright)^2-\mleft(-2\mright)=-b^2-8b+2 \\ \text{ Because} \\ (-2)\cdot(-2)=2\cdot2=4 \\ \text{ and} \\ ^{}-(-2)=2 \end{gathered}\)Therefore, the result of evaluate the given expression when x = -2 is:
\($$\boldsymbol{-b}^{\boldsymbol{2}}\boldsymbol{-8b+2}$$\)What benchmark would you round the following number to?*
3
4/6
Answer:
4 because it is 3.6666666