The height of the building from which the angle of elevation is 32 degrees is 127.87m.
The angle of elevation is found to be 32 degrees and when moving 50 closer to the building, the angle of elevation is 53.
Let us say that the height of the building is X.
Now, let us say the distance between the building and the person is Y.
So, we write,
tan(32°) = X/Y
Also, tan(53°) = X/(Y-50)
0.62 = X/Y and 1.32 = X/(Y-50)
0.62Y = 1.32Y - 66
66 = 0.32Y
Y = 206.25 m
Now, we know, X = 206.25m x 0.62
X = 127.87m
So, the height of the building is 127.87m.
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Mark uses his calculator for 80% of his maths homework
questions. Twelve questions are answered with his calculate
How many questions does Mark have for homework
Answer:
The number of questions in Mark's homework is:
60 questions.Step-by-step explanation:
To identify the number of questions of the homework, first, you must identify the percentage that is the 12 question Mark calculates by himself: if in 80% he uses calculator, in 20% he doesn't, I mean, he uses his own calculates, by this reason:
20% = 12 questions of the homework.With this data, we can use a simple rule of three and find the number of question that correspond to 80%.
If:
20% = 12 questions80% = xThen:
\(x=\frac{80*12}{20}\) (you can use the percentage if you want, the result is the same)\(x=\frac{960}{20}\)\(x=48\)At last, we add the 80% and the 20% of the questions:
Total of questions = 80% with calculator + 20% with his calculatesTotal of questions = 48 questions + 12 questionsTotal of questions = 60 questionsAs you can see, the number of questions in Mark's homework is 60 questions.
The number of computer security breaches is expected to increase at a yearly rate of
86%.
Use the exponential growth model to determine the equivalent monthly rate.
Enter the rate, to the nearest tenth of a percent, in the box.
Walmart has cashews that sell for $2 a pound and peanuts that sell for $1.50 a pound. Meijer sells cashews for
$2.50 a pound and peanuts for $1 a pound. Mike paid $26 at Walmart and Jim paid $29 at Meijer for the same
amount of nuts. How many pounds of cashews and peanuts did they buy?
Let "c" represent the amount of cashews they each bought.
Let "p" represent the amount of peanuts they each bought.
Mike: 2c + 1.5p = 26
Jim: 2.5c + 1 p = 29
That's the system you need to solve. We can do this with substitution.
Start with Jim:
2.5c + p = 29
p = 29 - 2.5c
Substitute that into Mike and solve for c:
2c + 1.5p = 26
2c + 1.5(29 - 2.5c) = 26
2c + 43.5 - 3.75c = 26
-1.75c + 43.5 = 26
-1.75c = - 17.5
c = 10
Now substitute that back into Jim's last equation:
p = 29 - 2.5c
p = 29 - 2.5(10)
p = 29 - 25
p = 4
So they each bought 10 pounds of cashews and 4 pounds of peanuts.
find two consecutive positive integers such that the square of the smaller integer added to four times the larger integer is equal to 100.
Answer:
50 and 20 that is the answer Thank you
A) A jar on your desk contains fourteen black, eight red, eleven yellow, and four green jellybeans. You pick a jellybean without looking. Find the odds of picking a black jellybean. B) A jar on your desk contains ten black, eight red, twelve yellow, and five green jellybeans. You pick a jellybean without looking. Find the odds of picking a green jellybean.
A) The odds of picking a black jellybean are 14/37.
Step-by-step explanation:
The jar contains fourteen black, eight red, eleven yellow, and four green jellybeans.
Therefore, the Total number of jellybeans in the jar = 14+8+11+4=37
Since the question asks for odds, which is the ratio of the number of favorable outcomes to the number of unfavorable outcomes. Let us first find the number of favorable outcomes, i.e. the number of black jellybeans.
Therefore, the number of black jellybeans = 14
Now, the number of unfavorable outcomes is the number of jellybeans that are not black.
Therefore, the number of unfavorable outcomes = 37-14=23
Hence, the odds of picking a black jellybean are the ratio of the number of favorable outcomes to the number of unfavorable outcomes.
Odds of picking a black jellybean = (number of favorable outcomes)/(number of unfavorable outcomes)=14/37
Answer: Odds of picking a black jellybean are 14/37.
B) The odds of picking a green jellybean are 5/35.
Step-by-step explanation:
The jar contains ten black, eight red, twelve yellow, and five green jellybeans.
Therefore, the Total number of jellybeans in the jar = 10+8+12+5=35
Since the question asks for odds, which is the ratio of the number of favorable outcomes to the number of unfavorable outcomes. Let us first find the number of favorable outcomes, i.e. the number of green jellybeans.
Therefore, the number of green jellybeans = 5Now, the number of unfavorable outcomes is the number of jellybeans that are not green.
Therefore, the number of unfavorable outcomes = 35-5=30
Hence, the odds of picking a green jellybean are the ratio of the number of favorable outcomes to the number of unfavorable outcomes.
Odds of picking a green jellybean = (number of favorable outcomes)/(number of unfavorable outcomes)=5/30
Reducing the ratio to the simplest form, we get the odds of picking a green jellybean = 1/6
Hence, the odds of picking a green jellybean are 5/35.
Answer: Odds of picking a green jellybean are 5/35.
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can u guys help wit a little bit more questions what is 9.04-6.98
Answer:
9.04-6.98=2.06
Are 1/2 and 2/1 perpendicular or parallel?
Answer:
parallel
Step-by-step explanation:
John used his MasterCard credit card to purchase groceries for $75.63, gas for $93.45, and a video game for $61.93 this month. How much should his payment to his credit card company be in order for him to avoid interest charges on these purchases?
Answer:
231.01
Step-by-step explanation:
48 is what percentage of 24?
Answer: 50%
Step-by-step explanation:
24 divided by 48 is 0.50 so 50%
Answer:
200%
Step-by-step explanation:
2=200% and 24 × 2 = 48
PLEASE ANSWER: find the slope of the line through each pair of points. (1,6) and (8,-1)
Answer: -1
Step-by-step explanation:
To find the slope fo the line with the given points, you use the formula \(m=\frac{y_2-y_1}{x_2-x_1}\).
\(m=\frac{-1-6}{8-1}=\frac{-7}{7} =-1\)
Now, we know that the slope is -1.
the question is in the picture sorry the pic is bad but i need the answer for the transformations of triangle abc to triangle xyz
это вопрос 10 класса? Вопрос старшеклассника??
Answer: I think its reflected
Step-by-step explanation:
What expression can be used to solve 2/5 divided by 3/4 = ?
Move numbers and a symbol to the boxes to show the expression.
Answer:
0.53 then, search up 0.53 as a fraction and that's your answer. subscribe to amiredagoat Yt
Step-by-step explanation:
mountain officials want to build a new ski lift from to , as shown in the figure below. the distance from to is feet. they measure angle to be and angle to be . what is the distance from to ? round your answer to the nearest tenth of a foot.
The distance from A to B is 724.64 ft
Consider the following figure.
In right triangle CDA, the sine of angle DAC would be,
sin(∠DAC) = CD/CA
sin(32°) = CD/1540
CD = 816.1 ft
Consider the tangent of angle DAC.
tan(∠DAC ) = CD/AD
tan(32°) = 816.1 / AD
AD = 816.1/ 0.63
AD = 1295.4
Let us assume that distance AB = x feet
In right triangle CDB, the tangent of angle CBD would be,
tan(∠CBD) = CD/DB
tan(∠CBD) = CD/(DA + AB)
tan(22°) = 816.1 / (1295.4+ x)
1295.4 + x = 816.1 / 0.4040
1295.4 + x = 2020.04
x = 2020.04 - 1295.4
x = 724.64 ft
Therefore, the required distance is 724.64 ft
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Find the complete question below.
hey pls help but wrong answer will be reported. offering brainiest
Answer: h>7
Step-by-step explanation:
By 3 pm they have sold 125 glasses, and they need 300 total, so they need to sell 175 glasses more. At 25 glasses an hour, divide 175 by 25 to find the number of hours, which is 7. So they will need to be open for over 7 more hours to sell more than 300 glasses.
Answer:
C. h>7
Step-by-step explanation:
The fruit and juice bar sold 125 glasses of fruit punch by 3 p.m. To reach their goal of selling more than 300 glasses of fruit punch, they need to sell an additional 300 - 125 = 175 glasses of fruit punch.
We know that they sell 25 glasses of fruit punch per hour. Let's represent the number of hours they need to stay open past 3 p.m. as h. The total number of glasses of fruit punch they sell in h hours is 25h.
We need to find the value of h that satisfies the following inequality:
25h > 175
Dividing both sides by 25 gives us:
h > 7
Therefore, the fruit and juice bar needs to stay open for more than 7 hours past 3 p.m. to sell more than 300 glasses of fruit punch. The answer is option C: h > 7.
• Determine the value of x6 when x = 51/3
The value of 6x is 102.
What is Equation?Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides. LHS = RHS is a common mathematical formula.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given:
x=51/3
For 6x put x= 51/3 we get
6x = 6 x 51/3
6x = 2 x 51
6x = 102
Or, \(x^6\) = \((51/3)^6\)
\(x^6\) = 17,596,287,801 / 531,441
Hence, the value of 6x = 102.
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pls help math question i will make brainliest
The population standard deviation is measured 120. A sample of 25 observations is taken from the population. What is the variance of the sampling distribution of the mean for this sample?.
===================================================
Explanation:
sigma = 120 = population standard deviation
n = 25 = sample size
sigma/sqrt(n) = standard deviation of the xbar distribution
sigma/sqrt(n) = 120/sqrt(25) = 24
The standard deviation of the sampling distribution of the mean for this sample is 24. Rephrased, the standard deviation of the xbar distribution is 24.
To get the variance, we square the standard deviation
variance = (standard deviation)^2
variance = 24^2
variance = 576
Keep in mind this is the variance of the xbar distribution, and not the original underlying distribution it came from.
whats 10k - 90 = -10
Answer:
k = 8
Step-by-step explanation:
10*8 - 90 = -10
:/
ted directions. 1. how many ways can six of the letters of the word algorithm be selected and written in a row if the first letter must be a.
There are 4,320 ways to select six of the letters of the word algorithm and write them in a row if the first letter must be "a".
There are 7 letters in the word "algorithm", and we need to select 6 of them and arrange them in a row such that the first letter is "a". We can first choose the remaining 5 letters from the remaining 6 letters (excluding "a") in 6 choose 5 ways
⁶C₅ = 6!/5! = 6
Once we have chosen the 5 letters, we can arrange the 6 selected letters (including "a") in a row in 6! ways. Therefore, the total number of ways to select 6 letters and arrange them in a row with the first letter being "a" is
⁶C₅ × 6! = 6 × 720 = 4,320
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Find both the vector equation and the parametric equations of the line through (0,0,0) that is perpendicular to both u = <1,0,2> and w = <1,-1,0> where t=0 corresponds to the given point.
The vector equation of the line is r(t) = t<2, 0, -1>, and the corresponding parametric equations are x = 2t, y = 0, z = -t.
To find the vector equation and parametric equations of the line passing through the point (0, 0, 0) and perpendicular to both u = <1, 0, 2> and w = <1, -1, 0>, we can use the cross product of u and w.
The cross product of two vectors u and w gives us a vector that is perpendicular to both u and w. So, by finding the cross product, we can determine the direction vector of the line.
First, we calculate the cross product of u and w:
u x w = <1, 0, 2> x <1, -1, 0>
Using the determinant rule for the cross product, we have:
u x w = <0(0) - 2(-1), 2(0) - 1(0), 1(-1) - 0(1)>
= <2, 0, -1>
The resulting vector <2, 0, -1> is the direction vector of the line.
Next, we can write the vector equation of the line:
r(t) = <x₀, y₀, z₀> + t<2, 0, -1>
Since the line passes through the point (0, 0, 0), the equation simplifies to:
r(t) = t<2, 0, -1>
This equation represents the line in vector form.
To obtain the parametric equations, we can express each component separately:
x = 2t
y = 0
z = -t
These equations represent the line parameterized by the variable t, where t = 0 corresponds to the given point (0, 0, 0).
In summary, the vector equation of the line is r(t) = t<2, 0, -1>, and the corresponding parametric equations are x = 2t, y = 0, z = -t.
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if h(x) = 3(x + 6), find h(-1).
a.3
b.9
c.15
d.21
The table shows four swimmers who raced against each other at a swim meet.
Which list shows the swimmers in order by their completion times from slowest to fastest
Answer:
Since you didn't provide the answer choices, it should look like something like this:
(from slowest to fastest)
Addison
Michael
Bryce
Susan
Explanation:
When you convert all the fractions into decimals, you can see and compare times easier.
Susan > 25.09
Bryce > 25.50
Addison > 25.80
Michael > 25.33 (the 3's go on practically forever, thats why it is usally shortened.)
suppose that 47% of people have dogs. if two people are randomly chosen, what is the probability that they both have a dog? write your answer as a percent and round to the nearest hundredth of a percent.there is a % chance the two randomly chosen people both have dogs.
The answer is that there is a 22.09% chance that the two randomly chosen people both have dogs. To answer this question, we need to use the concept of probability.
The probability of an event happening is the likelihood or chance of that event occurring. In this case, the event is both people having a dog.
We are given that 47% of people have dogs. Therefore, the probability of one person having a dog is 47%. To find the probability of both people having a dog, we need to multiply the probability of the first person having a dog by the probability of the second person having a dog. This is because the two events are independent of each other, meaning that the outcome of the first event does not affect the outcome of the second event.
So, the probability of both people having a dog is:
47% x 47% = 0.47 x 0.47 = 0.2209
To convert this to a percent, we multiply by 100:
0.2209 x 100 = 22.09%
Therefore, the answer is that there is a 22.09% chance that the two randomly chosen people both have dogs.
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Given: ∆MNP, PM = 8 m∠P = 90°, m∠N = 58° Find: Perimeter of ∆MNP
(Not 22.4 or 22.43)
Please answer ASAP, brainly awarded.
Answer:
Step-by-step explanation:
Triangle MNP is a right triangle with the following values:
m∠P = 90°m∠N = 58°PM = 8Interior angles of a triangle sum to 180°. Therefore:
m∠M + m∠N + m∠P = 180°
m∠M + 58° + 90° = 180°
m∠M + 148° = 180°
m∠M = 32°
To find the measures of sides MN and NP, use the Law of Sines:
\(\boxed{\begin{minipage}{7.6 cm}\underline{Law of Sines} \\\\$\dfrac{a}{\sin A}=\dfrac{b}{\sin B}=\dfrac{c}{\sin C}$\\\\\\where:\\ \phantom{ww}$\bullet$ $A, B$ and $C$ are the angles. \\ \phantom{ww}$\bullet$ $a, b$ and $c$ are the sides opposite the angles.\\\end{minipage}}\)
Substitute the values into the formula:
\(\dfrac{MN}{\sin P}=\dfrac{NP}{\sin M}=\dfrac{PM}{\sin N}\)
\(\dfrac{MN}{\sin 90^{\circ}}=\dfrac{NP}{\sin 32^{\circ}}=\dfrac{8}{\sin 58^{\circ}}\)
Therefore:
\(MN=\dfrac{8\sin 90^{\circ}}{\sin 58^{\circ}}=9.43342722...\)
\(NP=\dfrac{8\sin 32^{\circ}}{\sin 58^{\circ}}=4.99895481...\)
To find the perimeter of triangle MNP, sum the lengths of the sides.
\(\begin{aligned}\textsf{Perimeter}&=MN+NP+PM\\&=9.43342722...+4.99895481...+8\\&=22.4323820...\\&=22.43\; \sf units\; (2\;d.p.)\end{aligned}\)
a child-care center has 200 feet of fencing to enclose two adjacent rectangular safe play areas (of equal size). find the dimensions that will produce the maximum enclosed area. 5
The dimensions that will produce the maximum enclosed area for two adjacent rectangular safe play areas of equal size with 200 feet of fencing is 100 feet by 100 feet.
To solve this problem, use the area of a rectangle formula A = lw, where l is the length and w is the width.
Since the two play areas must be of equal size, let's call the length and width l and w, respectively.
We know that the total length of fencing is 200 feet, so l + w = 200 feet.
We can then solve for l by rearranging the equation as l = 200 - w.
We then substitute this into the area equation to get A = (200 - w)w.
To maximize the area, differentiate this equation to get A' = w - 200.
Set this to 0 and solve for w to get w = 100. Since l + w = 200, l = 100 as well.
Therefore, the maximum enclosed area is produced by dimensions of l = 100 feet and w = 100 feet.
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The proportion of a normal distribution located between z = .50 and z = -.50 is ____.
The proportion of a normal distribution located between z = .50 and z = -.50 will be 38.2%.
We have,
A normal distribution located between z = 0.50 and z = -0.50,
So,
Now,
From the Z-score table,
We get,
The Probability corresponding to the Z score of -0.50,
i.e.
P(-0.50 < X < 0) = 0.191,
And,
The Probability corresponding to the Z score of -0.50,
i.e.
P(0 < X < 0.50) = 0.191,
Now,
The proportion of a normal distribution,
i.e.
P(Z₁ < X < Z₂) = P(Z₁ < X < 0) + P(0 < X < Z₂)
Now,
Putting values,
i.e.
P(-0.50 < X < 0.50) = P(-0.50 < X < 0) + P(0 < X < 0.50)
Now,
Again putting values,
We get,
P(-0.50 < X < 0.50) = 0.191 + 0.191
On solving we get,
P(-0.50 < X < 0.50) = 0.382
So,
We can write as,
P(-0.50 < X < 0.50) = 38.2%
So,
The proportion of a normal distribution is 38.2%.
Hence we can say that the proportion of a normal distribution located between z = .50 and z = -.50 will be 38.2%.
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Q2: a(b + c) = ab + ac is (a)commutative property (b) distributive property (c) associative property (d) closure property
Answer:
(b) distributive property
Step-by-step explanation:
When you multiply a number (a) by a sum of two other numbers (b + c), you can distribute the multiplication across the sum and get the same result as if you had multiplied a by each of the two numbers (b and c) separately, and then added the two products together.
For example, if a = 2, b = 3, and c = 4, then:
2 x (3 + 4) = 2 x 7 = 14
and
(2 x 3) + (2 x 4) = 6 + 8 = 14
so the distributive property holds in this case.
20. What is the slope of the line that passes through (-6, -4) and (9, -19)?
Answer:
Step-by-step explanation:
A
Answer:
m = -1
Step-by-step explanation:
100 points / i suck at this
Alison runs a mile in 5 minutes and 50 seconds. Elizabeth runs a mile in 6 minutes and 40 seconds. What is the ratio of Alison's time to Elizabeth's time?
a) 7:8
b) 5.5:6.4
c) 55:64
d) 8:7
Answer:
7:8
Step-by-step explanation:
First, convert their times to common units. You'll want to put it in seconds:
5 minutes and 50 seconds = 350 seconds
- multiply 5 minutes by 60 to get it into seconds and then add the other 50 seconds to it
- for Elizabeth's time, multiply 6 by 60 seconds and add 40 to it
To get the ratio of their times, divide Alison's time by Elizabeth's time:
350 ÷ 400 = 7:8
Answer:
a) 7:8
Step-by-step explanation:
Alison: 5 minutes and 50 seconds = 355 seconds
Elizabeth: 6 minutes and 40 seconds = 400 seconds
355:400, reduces to 71:80 or 7:8
There are 3 types of gummy bears:
Mini-bear, Regular bear, and Super Bear
10 mini-bears weights to 12.1 grams
10 regular bears weights to 23.1 grams
1 super bear weights to 2250 grams
Question: How many more mini-bears than regular-bears does it take to have the same weight as one super-bear?
If you can please respond in one clear, succinct paragraph. Be sure to clearly state your final answer and include all of your mathematical reasoning that led you to your final answer. Make sure you write in complete sentences with proper writing conventions (i.e. grammar, punctuation, spelling).
885 mini bears
974 regular bears equals the size of a super bear while 1859 mini bears eqauls the size of a super bear therefore,there are 885 mini bears more than regular bears to make the size of a super bear.
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