In this problem, we want to find the missing side of a right triangle.
Since we have been given one side and an angle, we will need to use a trigonometric function. The general functions for this type of triangle are
- sine
- cosine
- tangent
Each one depends on which side is given and which side you're trying to find.
We have the diagram
The arrow always points to the opposite side, which means we know the adjacent side is 13.
Since we are given the adjacent side and want to find the opposite side, we need to use the tangent function:
\(\tan\theta=\frac{\text{ opposite}}{\text{ adjacent}}\)Since the angle is 73 degrees, we set up the ratio like this:
\(\tan73^{\circ}=\frac{x}{13}\)We should multiply by 13 on both sides to isolate the variable, x:
\(\begin{gathered} 13\cdot\tan73^{\circ}=\frac{x}{13}\cdot13 \\ \\ 13\tan73^{\circ}=x \end{gathered}\)Before we put this in the calculator, ensure that your calculator is set to degrees. You can do this by pushing the "mode" button. Select the option that says "degree."
Let's finish this off by keying in the expression directly into the calculator:
\(x=13\cdot\tan(73)\approx43\)Although the calculator will read about 42.52108....., we need to round to the nearest whole number.
\(\boxed{x\approx43}\)Find the sum of the infinite geometric sequence.
If the answer is not an integer, enter it as a fraction in simplest form.
The sum of the infinite geometric sequence is 3 3/4
How to find the sum of the infinite geometric sequence.From the question, we have the following parameters that can be used in our computation:
The geometric sequence
In the geometric sequence, we have
First term, a = 3/5¹⁻¹
a = 3
Also, we have
Common ratio, r = 1/5
The sum of the infinite geometric sequence is calculated as
Sum = a/(1 - r)
So, we have
Sum = 3/(1 - 1/5)
Evaluate
Sum = 3 3/4
Hence, the sum of the infinite geometric sequence is 3 3/4
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Help me pls it’s due today at 11:59
Answer:
A rotation followed by a translation
After a windstorm, a leaning pole makes a 75° angle with the road surface. The pole casts a 15-foot shadow when the sun is at a 45° angle of elevation. About how long is the pole?
a) 11.0 ft.
b) 12.2 ft.
c) 16.7 ft.
d) 20.5 ft.
9514 1404 393
Answer:
b) 12.2 ft
Step-by-step explanation:
Based on the attached and the answer choices, it looks like we're to assume the pole is leaning away from the sun. Of course, we must assume the angle the pole makes with the ground and the angle of elevation are in the same plane.
The problem can be solved using the law of sines. In the attached, we have ...
AD/sin(O) = OA/sin(D)
The angle at D is 180° -45° -75° = 60°, so this can be written as ...
AD = sin(45°)(15 ft)/sin(60°)
AD ≈ 12.247 ft
The pole is about 12.2 feet long.
Find the sum of the squares of the first five natural numbers.
Answer:
55
Step-by-step explanation:
The sum of the squares of the first five natural numbers.
Natural numbers are the positive integers (whole numbers) 1, 2, 3, etc., and sometimes zero as well.
Therefore:
(1^2) + (2^2) + (3^2) + (4^2) + (5^2)
1 + 4 + 9 + 16 + 25
55
Mark as brainliest if helped thanks!!!
What is the point of factoring
Factoring is an important process that helps us understand more about our equations. Through factoring, we rewrite our polynomials in a simpler form, and when we apply the principles of factoring to equations, we yield a lot of useful information. There are a lot of different factoring techniques.
The Blue Ridge parkway is 469 miles long. The parkway is a road that runs through 29 Virginia and North Carolina counties. Sam drove 2/5 of the parkway on vacation. How many miles did he drive? Simplify your answer and said it as a mixed number
187.6miles
Step-by-step explanation:
blue ridge parkway is 469miles
sam drove 2/5 of the parkway
2/5×469
=469×2/5
938/5
187.6miles
The total cost of the snow cones, t, depends on the number of snow cones ordered, s. The relationship is shown in the table.
Number of
Snow Cones Total Cost
(dollars)
2 6
4 12
5 15
Which equation can be used to calculate the total cost, t, of s snow cones?
The equation will be t = 3s where t is total cost and s is number of snow cones. this can be find out be relationship of number of snow cones and total cost in table .
In given table :
Number of snow cones Total cost
2 6
6 12
5 15
From above table, we can relate
1st case :
number of snow cones = 2 and total cost = 6
i.e. 3 times of number of cones.
2nd case:
number of cones = 4 and total cost = 12
i.e. 3 times the number of cones.
3rd case :
number of cones = 5 and total cost = 15
i.e. 3 times the number of cones.
So, we see same pattern is repeated in all.
Then equation will be t = 3s where t = total cost , s = number of snow cones.
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1) Graph the function by plotting the ordered pairs (0, 0) (10, 125) (20, 250) (30, 375) (40, 500) and
drawing a straight line through the points. Label the axes with appropriate
variable
quantities
and units. Label the points with the correct ordered pairs. Include a title for the graph.
The graph of the given function is attached below.
We are given a function. A function connects an input and an output. It is analogous to a machine with an input and an output. And the output is somehow related to the input.
The coordinates of several points are given. We need to graph the function by plotting the ordered pairs (0, 0), (10, 125), (20, 250), (30, 375), and (40, 500).
The function is a straight line. A straight line is a one-dimensional figure with an infinite length. It is made up of an infinite number of points connected on both sides of a point. We also need to draw the line through the points. The graph is attached below.
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The manager of Jim's Grill tracked and charted how many customers they have to better schedule her staff. Based on the graph, about how many customers are in the restaurant at the slowest time of the , between the two peaks?
Please answer this correctly without making mistakes
Answer:
50%
Step-by-step explanation:
Answer:
50 present
Step-by-step explanation:
Lamont spends $120 on groceries. This is 25% of the money he earns this week. How much does Lamont earn? Show your work
Lamont's total earnings this week come to be $480.
Lamont spends $120 on groceries and this is 25% of the money he earns this week.
This means, $120 = 25% of the total earnings of Lamont
Suppose total earnings =x
What is the percentage?The percentage is the value per hundred.
25% of x= \(\frac{25*x}{100}=\frac{x}{4}\)
Given \(\frac{x}{4} =120\)
So, \(x=480\)
So, his total earnings is $480.
Thus, Lamont's total earnings come to be $480.
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4 cm
7 cm
12 cm
10 cm
9 cm
Work out the volume and surface area of the prism.
Answer:
42
Step-by-step explanation:
WILL GIVE BRAINLIST IF CORRECT!!
The diameter of a red blood cell is about 0.0008 cm. The diameter of a whooping cough virus is about 2.5 x 10-5 cm. What is the approximate ratio of the diameter of the red blood cell to the diameter of the whooping cough virus? LOOK AT PICTURE
A.) 3.2 × 10^1
B.) 3.1 × 10^-3
C.) 3.1 x 10^-2
D.) 3.2 × 10^2
Answer:
b
Step-by-step explanation:
as 2.5 × 10-^5 is 250000 and b is 3100 and if you do 10-5 + 10-3 it is 10-8 which will give u 0.0008cm I think if my calculations r correct
Answer:
a
Step-by-step explanation:
just did it and got right
01:37:35
What is the difference between the largest prime number less than 50 and the smallest composite number greater than 10
Answer:
35
Step-by-step explanation:
47-12=35
The slope of MN¯¯¯¯¯¯¯ is −3.
Which segments are parallel to MN¯¯¯¯¯¯¯?
Select each correct answer.
Responses
WX¯¯¯¯¯¯, where W is at (2, 6) and X is at (4, 0)
segment W X, , where , W, is at , begin ordered pair 2 comma 6 end ordered pair, and , X, is at , begin ordered pair 4 comma 0 end ordered pair
RS¯¯¯¯¯, where R is at (1, 3) and S is at (4, 2)
segment R S, , where , R, is at , begin ordered pair 1 comma 3 end ordered pair, and , S, is at , begin ordered pair 4 comma 2 end ordered pair
TU¯¯¯¯¯, where T is at (8, 1) and U is at (5, 10)
segment T U, , where , T , is at , begin ordered pair 8 comma 1 end ordered pair, and, U, is at , begin ordered pair 5 comma 10 end ordered pair
PQ¯¯¯¯¯, where P is at (5, 6) and Q is at (8, 7)
TU is parallel to MN.
Given that the slope of a line MN is -3, we need to find a line which is parallel to the MN.
So we know that the parallel lines are having equal slope so the line which is parallel to the MN it must have slope of -3.
Therefore,
Considering the line TU, find the slope = y₂-y₁ / x₂-x₁
= 10-1 / 5-8 = -9/3 = -3
Since, the slope of the line TU is -3 therefore we can say the lines TU and MN are parallel liens.
Hence TU is parallel to MN.
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Eleanor has £50. Trevor takes £y. What’s an expression for how much Eleanor has got left?
Write down the answer, and don’t leave spaces, please.
Answer:
£50-£y or 50-y
Step-by-step explanation:
remaining = initial - taken
remaining = 50 - y
Patrick’s favorite album has 12 songs. Each song is 4 ⅙ minutes long. Patrick started listening to the album at 7:49 p.m.He listened to the whole album without pausing. What time did Patrick finish listening?
Answer:8:39
Step-by-step explanation: multiply 4 1/6 by 12 and you would get 50 in this case it would be 50 minutes later. so if you add 11 to get to 8 you would be at 8:00 and you would be left with 39 minutes left so you take the 39 minutes and combine that with the 8:00 and get 8:39 as your answer.
Suppose sam deposited 1000$ every month in the beginning for his retirement fund for 20 years at 5% compounded monthly. What is value of N
To find the value of N, we need the future value of the retirement fund. If you provide the desired future value, I can calculate the exact value of N.
To find the value of N, we need to calculate the number of monthly deposits Sam made for his retirement fund over 20 years.
Sam deposited $1000 every month for 20 years, which is a total of 20 x 12 = 240 deposits. Each deposit has a compounded interest rate of 5% per year, compounded monthly.
The formula to calculate the future value of a series of monthly deposits is given by:
FV = P * [(1 + r)^n - 1] / r
Where:
FV is the future value of the investment,
P is the monthly deposit amount,
r is the monthly interest rate, and
n is the number of deposits.
In this case, P = $1000, r = 5% / 12 = 0.05 / 12 = 0.00417 (monthly interest rate), and FV is the value of the retirement fund after 20 years.
By rearranging the formula, we can solve for n:
n = log((FV * r) / (P * r + FV)) / log(1 + r)
Plugging in the values, we get:
n = log((FV * 0.00417) / (1000 * 0.00417 + FV)) / log(1 + 0.00417)
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The length of a rectangle is twice its width. Find its lenght and width, if its perimeter is 7 1/3 cm.
The length of the rectangle is twice its width. If its perimeter is 7 1/3 cm, its length will be 22/9 cm, and the width is 11/9 cm.
Let's assume the width of the rectangle is "b" cm.
According to the given information, the length of the rectangle is twice its width, so the length would be "2b" cm.
The formula for the perimeter of a rectangle is given by:
Perimeter = 2 * (length + width)
Substituting the given perimeter value, we have:
7 1/3 cm = 2 * (2b + b)
To simplify the calculation, let's convert 7 1/3 to an improper fraction:
7 1/3 = (3*7 + 1)/3 = 22/3
Rewriting the equation:
22/3 = 2 * (3b)
Simplifying further:
22/3 = 6b
To solve for "b," we can divide both sides by 6:
b = (22/3) / 6 = 22/18 = 11/9 cm
Therefore, the width of the rectangle is 11/9 cm.
To find the length, we can substitute the width back into the equation:
Length = 2b = 2 * (11/9) = 22/9 cm
So, the length of the rectangle is 22/9 cm, and the width is 11/9 cm.
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Help
Pls it’s due in 1 hour!
Answer:
D
Step-by-step explanation:
sin2x=
please help!!
Answer:
A
Step-by-step explanation:
It is a double angle identity.
sin2x = 2sinxcosx
Answer: 2sinxcosx
Step-by-step explanation:
7. Tell whether the sequence is arithmetic. If it is, identify the common difference. (I point)
19.8. -3, -14,
Not arithmetic
Arithmetic, common difference is -11
Arithmetic, common difference is 5
Arithmetic, common difference is 17
Answer:
Arithmetic, common difference is -11
Step-by-step explanation:
19, 8, -3, -14
common difference = d = 8 - 19 = -11
-3 - 8 = -11
-14 - (-3) = -11
Arithmetic, common difference is -11
The sum of three numbers is 28,542.two of the numbers are 10,350, and 9,750. Find the third number.
◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦
\(HELLO! :)\)
28,542-10,350-9,750=8,442So the third number is 8,442Hope this helps! :)\(GraceRosalia\)What equation is parallel to
y= - 1\4x + 5 and passes through (2,-3)
QUICK
Given:
The equation of parallel line is \(y=-\dfrac{1}{4}x+5\).
Required line passes through (2,-3).
To find:
The equation of line.
Solution:
We have,
\(y=-\dfrac{1}{4}x+5\)
On comparing this equation with \(y=mx+b\), where m is slope, we get
\(m=-\dfrac{1}{4}\)
Slope of two parallel lines are always same. So, slope of required line is \(m=-\dfrac{1}{4}\).
The required line passes through the point (2,-3) having slope \(m=-\dfrac{1}{4}\), so the equation of line is
\(y-y_1=m(x-x_1)\)
\(y-(-3)=-\dfrac{1}{4}(x-2)\)
\(y+3=-\dfrac{1}{4}(x)-\dfrac{1}{4}(-2)\)
\(y+3=-\dfrac{1}{4}(x)+\dfrac{1}{2}\)
Subtracting 3 from both sides, we get
\(y=-\dfrac{1}{4}(x)+\dfrac{1}{2}-3\)
\(y=-\dfrac{1}{4}(x)+\dfrac{1-6}{2}\)
\(y=-\dfrac{1}{4}(x)-\dfrac{5}{2}\)
Therefore, the equation of required line is \(y=-\dfrac{1}{4}(x)-\dfrac{5}{2}\).
A kids pool had a small opening through which water sometimes leaked out. Water was poured into the pool from time to time. The graph shows the amount of water in the pool (y), in gallons, at certain times (x), in hours.
Which of the following statements best describes the amount of water in the pool ?
1) it is increasing during the time interval 4
2) it is increasing during the time interval 10
3) it is decreasing during the time interval 4
4) it is decreasing during the time interval 10
The best statement that describes the amount of water in the pool is that it is decreasing during the time interval 4. That is option 3.
How to determine the the interval of the water in the pool?To determine the time interval of the water in the pool the following is carried out.
At 0 hour, the water is at the level of = 40 gallons
At 1 hour, the water decreased to = 25 gallons.
At 2 hours, the water decreased to = 10 gallons.
The water remained at a constant level till 4 hours.
Therefore, the amount of water in the pool is that it is decreasing during the time interval 4.
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What are the center and radius if the equation (x-2)^2 + (y-9)^2
Step-by-step explanation:
(x-2)^2 + (y-9)^2 = r^2
this is of the form fora circle with center h,k and radius r
(x-h)^2 + (y-k)^2 = r^2
for the equation given center = 2, 9 and radius = r
The article "Expectation Analysis of the Probability of Failure for Water Supply Pipes"† proposed using the Poisson distribution to model the number of failures in pipelines of various types. Suppose that for cast-iron pipe of a particular length, the expected number of failures is 1 (very close to one of the cases considered in the article). Then X, the number of failures, has a Poisson distribution with μ = 1. (Round your answers to three decimal places.) Obtain P(X ≤ 5) by using the Cumulative Poisson Probabilities What is the probability that X exceeds its mean value by more than one standard deviation?
Answer:
a. P(X ≤ 5) = 0.999
b. P(X > λ+λ) = P(X > 2) = 0.080
Step-by-step explanation:
We model this randome variable with a Poisson distribution, with parameter λ=1.
We have to calculate, using this distribution, P(X ≤ 5).
The probability of k pipeline failures can be calculated with the following equation:
\(P(k)=\lambda^{k} \cdot e^{-\lambda}/k!=1^{k} \cdot e^{-1}/k!=e^{-1}/k!\)
Then, we can calculate P(X ≤ 5) as:
\(P(X\leq5)=P(0)+P(1)+P(2)+P(4)+P(5)\\\\\\P(0)=1^{0} \cdot e^{-1}/0!=1*0.3679/1=0.368\\\\P(1)=1^{1} \cdot e^{-1}/1!=1*0.3679/1=0.368\\\\P(2)=1^{2} \cdot e^{-1}/2!=1*0.3679/2=0.184\\\\P(3)=1^{3} \cdot e^{-1}/3!=1*0.3679/6=0.061\\\\P(4)=1^{4} \cdot e^{-1}/4!=1*0.3679/24=0.015\\\\P(5)=1^{5} \cdot e^{-1}/5!=1*0.3679/120=0.003\\\\\\P(X\leq5)=0.368+0.368+0.184+0.061+0.015+0.003=0.999\)
The standard deviation of the Poisson deistribution is equal to its parameter λ=1, so the probability that X exceeds its mean value by more than one standard deviation (X>1+1=2) can be calculated as:
\(P(X>2)=1-(P(0)+P(1)+P(2))\\\\\\P(0)=1^{0} \cdot e^{-1}/0!=1*0.3679/1=0.368\\\\P(1)=1^{1} \cdot e^{-1}/1!=1*0.3679/1=0.368\\\\P(2)=1^{2} \cdot e^{-1}/2!=1*0.3679/2=0.184\\\\\\P(X>2)=1-(0.368+0.368+0.184)=1-0.920=0.080\)
I need help please.
Answer:
A because there isnt a mode, hope this helps\
Use the Trapezoidal Rule to approximate ∫43ln(x2+9) dx using n=3. Round your answer to the nearest hundredth.
The Trapezoidal rule formula is given to be:
\(\begin{gathered} \int_a^bf(x)dx\approx\frac{\triangle x}{2}(f(x_o)+2f(x_1)+2f(x_2)+2f(x_3)+...+2f(x_{n-1})+f(x_n) \\ where \\ \triangle x=\frac{b-a}{n} \end{gathered}\)The question gives:
\(\begin{gathered} f(x)=\ln(x^2+9) \\ a=3 \\ b=4 \\ n=3 \\ \therefore \\ \triangle x=\frac{1}{3} \end{gathered}\)Therefore, divide the interval into n = 3 subintervals of length 1/3 with the following endpoints:
\(a=3,\frac{10}{3},\frac{11}{3},4\)Evaluate the function at the endpoints:
\(\begin{gathered} f(x_0)=f(3)=2.89 \\ 2f(x_1)=2f(\frac{10}{3})=6.00 \\ 2f(x_2)=2f(\frac{11}{3})=6.22 \\ f(x_3)=f(4)=3.22 \end{gathered}\)Sum up the calculated values and multiply by Δx/2:
\(\Rightarrow\frac{1}{3\times2}(2.89+6.00+6.22+3.22)=3.06\)Therefore, the answer will be:
\(\int_3^4\ln(x^2+9)dx\approx3.06\)answer these 2 qns if possible or atleast one
1. The percentage of maize flour is given as 16.7 %
2. The common ratio of the GP is r = 1.5.
How to solve for the common ratio1. We have to set up equation
60x + 90(1 - x) = 85
60x + 90 - 90x = 85
now we have to solve for the value of x
-30x = -5
x = 5 / 30
x = 0.167
Hence percentage of maize flour is given as 16.7 %
2. a + ar = 20 (1)
ar + ar^2 = 30 (2)
We can rearrange equation (1) to get an expression for a:
a = 20 / (1 + r)
Now, we can substitute a into equation (2) to get an equation only in terms of r:
\(20r / (1 + r) + 20r^2 / (1 + r) = 30\\20r + 20r^2 = 30(1 + r)\\20r + 20r^2 = 30 + 30r\\20r^2 - 10r - 30 = 0\\2r^2 - r - 3 = 0\)
Solving this quadratic equation, we get:
We have two solutions, r = 1.5 and r = -1. But since the GP is increasing, we discard the negative solution. Therefore, the common ratio of the GP is r = 1.5.
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