Answer:
112.81 m.
Step-by-step explanation:
The pole and the tower and their shadows form 2 similar triangles so their corresponding sides are in the smae ratio.
Therefore we have the relation:
1.21 / 48.75 = 2.8 / x where x is the height of the tower.
Cross multiplying:
x = 2.8 * 48.75 / 1.21
= 112.81 m
Final answer:
To find the height of the tower, we use the proportion 2.8 m / 1.21 m = H / 48.75 m. After cross-multiplication and division, the height of the tower is calculated to be approximately 112.81 meters.
Explanation:
The student's question involves using similar triangles to determine the height of a tower based on the shadow it casts. To solve this problem, we can set up a proportion because the pole and tower will cast shadows at the same angle due to the sun's position. The proportional relationship is formed by the height of the pole over its shadow length being equal to the height of the tower over its shadow length.
Let's designate the height of the tower as H. The proportion will then be:
2.8 m / 1.21 m = H / 48.75 m
Cross-multiplying to solve for H, we get:
2.8 m \\times 48.75 m = H \\times 1.21 m
136.5 m = 1.21 m \\times H
To find H, divide both sides by 1.21 m:
H = 136.5 m / 1.21 m
H = 112.8099 m
So, the height of the tower is approximately 112.81 meters after rounding to two decimal places.
What is the solution of 4x 2 36?
Answer:
x= 8.5 or 9, or deciding if u adding or subtracting the problem, x= 9.5 or 10
Step-by-step explanation:
If you're meaning 4x+2=36 or 4x-2=36
-2 -2 +2 +2
4x=34 4x=38
4 4 4 4
x= 8.5 or 9 x= 9.5 or 10
Hope i have helped you! :)
WORTH 34 POINTS! PLEASE HELP ASAP!
Would you describe the association between the age of the car and its resale value as exhibiting a linear association, non-linear association, or no association? Explain your reasoning.
Answer:No assoication
Step-by-step explanation:
because they are not parellell with each other
Answer: No association.
Step-by-step explanation: They aren't parallel with each other. So, it has to be no association.
Two and two fifths divided by one and a half
Answer:
8/5 or 1 3/5
Step-by-step explanation:
2 2/5 = 12/5
1 1/2 = 3/2
Now that we have fractions that are easier to divide, one must understand that the opposite of dividing is multiplying. So if you multiply 12/5 by the reciprocal* of 3/2, which would be 2/3, you would get your answer so...
12 3 12 2 24 8 3
— ÷ — = — × — = — = — or 1 —
5 2 5 3 15 5 5
*the reciprocal is the opposite of the fraction you have. So the denominator would become the numerator, and vise versa.
Can someone please help me with these two
Answer:
For number 14, the answer should be 100 degrees. For number 15, the answer is 80 degrees. For number 16, the answer is 120 degrees.
Step-by-step explanation:
For number 14, if a minor arc is 80 degrees, then the major arc should be 100 degrees to add to make 180 degrees. For number 15, you can see the size of the 70 degrees angle, AB. Because DE is bigger than AB, we can conclude that it is probably 80 degrees. For number 16, if XY, YZ, and ZX are all the same, and a circle always adds up to 160 degrees, then 360 divided by the three arcs is 120.
given that ABCDEF = PQRSTU , solve for z
the answer is z=7 (as 3z-4=17)
Answer:
A. 5
Step-by-step explanation:
I need help please!!!!??
Check the picture below.
What is the solution to the following system of equations?
2x + 3y = 3
-3x - 2y = 8
The answer is (-6,5)
Answer:
Your answer will be (-6,5).
Step-by-step explanation:
You multiply the first equation by 3 and the second equation by 2. You will then cancel out the x's and find your y which is 5. You plug y back into your first equation to find your x which is -6. You then have your solution set.
Find a quadratic equ
{-2/5 7/5}
{-2/5 7/5}={-2*7/5*5}={-14/25} or if you prefer :
Final answer:
The quadratic equation with roots -2/5 and 7/5 is 25x^2 - 25x - 14 = 0. This is derived by expressing the equation in the form a(x - α)(x - β) = 0 and substituting the given roots.
Explanation:
To find a quadratic equation with roots -2/5 and 7/5, we use the fact that if α and β are the roots of the quadratic equation ax2 + bx + c = 0, then the equation can be written as a(x - α)(x - β) = 0. For roots -2/5 and 7/5, the quadratic equation becomes:
x2 - (sum of roots)x + (product of roots) = 0
x2 - ((-2/5) + (7/5))x + ((-2/5) × (7/5)) = 0
x2 - (5/5)x - (14/25) = 0
x2 - x - 14/25 = 0
Multiplying through by 25 to clear the fraction:
25x2 - 25x - 14 = 0
This is the quadratic equation with the given roots.
Use the substitution method to find the solution to the system of linear equations.
Answer: answer is d
Step-by-step explanation: input in calculator or set both equal to y and then set them equal to each other
The president of a certain University receives a salary that is three times the salary of one of the department heads the total of the two salaries is 190000 what is the salary of the president of the University
Answer:
$142500
Step-by-step explanation:
We are given that the resident of a certain University receives a salary that is three times the salary of one of the department heads.
If the sum of the two salaries is $190000, we are to find the salary of the president of the University.
Let [tex]x[/tex] to be the department head's salary, we can write an equation:
[tex]3x+x=190000[/tex]
[tex]4x=190000[/tex]
[tex]x=47500[/tex]
Salary of the president of the University = [tex]3(47500)[/tex] = $142500
Answer:
$142,500
Step-by-step explanation:
Let's say x is the salary of the department head.... so the salary of the president of the university can be described as 3x.
Then, we know the total of the two salaries is 190,000. We can express this as:
3x + x = 190,000
4x = 190,000
x = 47,500
x is for the department head. To get the president's salary, we have to multiply that by 3:
p = 3 (47,500) = 142,500
The salary of the president is then of $142,500.
Where is the Great Barrier Reef located?
Answer:
The Great Barrier Reef is located in Australia.
The Great Barrier Reef is located off the northeastern coast of Australia.
It stretches for approximately 1,600 miles and is home to a diverse range of sea creatures and fish, attracting millions of tourists, scuba divers, and water enthusiasts each year.
This natural wonder is a significant tourist attraction and plays an important role in the Australian economy.
Additionally, the Great Barrier Reef has been designated as a United Nations World Heritage Site due to its ecological importance.
What is the volume of the prism that can be constructed from this net?
184 units³
120 units³
124 units³
64 units³
Check the picture below.
so the net once folded up, will look more or less like the box there on the bottom-right.
Length = 2, Width = 10, Height = 6.
volume is then 2*10*6 = 120.
Answer:10,126,272 units
Step-by-step explanation:
184*184*184=6,229,504
120*120*120=1,728,000
124*124*124=1,906,624
64*64*64=262,144
6,229,504+1,728,000+1,906,624+262,144=10,126,272
In a population of 300 pigeons, 55% are female. If 40% of the male pigeons are not white, how many male pigeons are white? 135 180 81
Answer:
81
Step-by-step explanation:
Assuming the pigeons are either male or female, the 45% of them that are not female are male. Of those, there are 40% that are not white, so 60% are white. Then the number of white male pigeons is ...
60% of 45% of 300 = 0.60 · 0.45 · 300 = 81
a civil engineer has laid a graph down over the stretch of a new road system. a circular rotary has a diamater with endpoints (-3,5) and (5,11) what are the center and raduis of the rotary
[tex]\bf ~~~~~~~~~~~~\textit{middle point of 2 points } \\\\ (\stackrel{x_1}{-3}~,~\stackrel{y_1}{5})\qquad (\stackrel{x_2}{5}~,~\stackrel{y_2}{11}) \qquad \left(\cfrac{ x_2 + x_1}{2}~~~ ,~~~ \cfrac{ y_2 + y_1}{2} \right) \\\\\\ \left(\cfrac{5-3}{2}~~,~~\cfrac{11+5}{2} \right)\implies \left(\cfrac{2}{2}~,~ \cfrac{16}{2}\right)\implies \stackrel{center}{(1,8)} \\\\[-0.35em] ~\dotfill[/tex]
[tex]\bf ~~~~~~~~~~~~\textit{distance between 2 points} \\\\ \stackrel{endpoint}{(\stackrel{x_1}{-3}~,~\stackrel{y_1}{5})}\qquad \stackrel{center}{(\stackrel{x_2}{1}~,~\stackrel{y_2}{8})}\qquad \qquad d = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2} \\\\\\ \stackrel{radius}{r}=\sqrt{[1-(-3)]^2+[8-5]^2}\implies r=\sqrt{(1+3)^2+(8-5)^2} \\\\\\ r=\sqrt{16+9}\implies r=\sqrt{25}\implies r=5[/tex]
Do the midpoint formula. Which will give you (1,8)
John, Rick, and Molli can paint a room working together in 6 hours. Alone, John can paint the room in
12 hours. If Rick works alone, he can paint the room in 15 hours. Write an equation comparing the
group rate to the sum of the individual rates. Then find how long it will take Molli to paint the room if
working alone.
a. What is the equation?
b. What is the lowest common denominator for the equation in part a?
c. Show all work below in solving equation from part a.
Answer
a. [tex]\frac{1}{m}(6)+\frac{1}{12} (6)+\frac{1}{15} (6) =1[/tex]
b. 60hrs
Step-by-step explanation:
Let the time Molli will take to pint the room to be = t
Thus the amount of room that Molli can paint in 1 hour= 1/m
The amount of room John can paint is 1 hour= 1/12
The amount of room Rick can paint in 1 hour = 1/15
The equation for working together at a rate x time per work done will be;
[tex]\frac{1}{m} *6+\frac{1}{12} *6+\frac{1}{15} *6=1[/tex]
You multiply by 6 in the three terms of the equation because it takes 6 hours for John, Rick and Molli to complete painting.
[tex]\frac{6}{m} +\frac{1}{2} +\frac{2}{5} =1[/tex]
multiply by 10m in every part of the expression because 10m is the Least Common Multiple(LCM) is this case
Collect like terms and find value of m
[tex]60+5m+4m=10m\\\\60+9m=10m\\\\60=10m-9m\\\\60=m[/tex]
Molli will take 60 hours to paint the room if working alone
8 points! Please help me with this problem, what is sin(theta)?
sin=√17/7
or sin=sqrt(17)/7
Answer:
[tex]\frac{\sqrt{17} }{7}[/tex]
Step-by-step explanation:
Given
cosΘ = [tex]\frac{4\sqrt{2} }{7}[/tex] = [tex]\frac{adjacent}{hypotenuse}[/tex]
Then the hypotenuse of the right triangle is 7 and the adjacent side is 4[tex]\sqrt{2}[/tex]
To find the opposite side use Pythagoras' identity
The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is
opp² + (4[tex]\sqrt{2}[/tex] )² = 7²
opp² + 32 = 49 ( subtract 32 from both sides )
opp² = 17 ( take the square root of both sides )
opp = [tex]\sqrt{17}[/tex]
Hence
sinΘ = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{\sqrt{17} }{7}[/tex]
Given: x - 8 > -3.
Choose the solution set.
1.{x | x R, x > -9}
2.{x | x R, x > -5}
3.{x | x R, x > 5}
4.{x | x R, x > 14}
Answer:
x-8>-3 {x|R, x>5 is right answer
For this case we must find the solutions of the following inequality:
[tex]x-8> -3[/tex]
Adding 8 to both sides of the inequality we have:
[tex]x> -3 + 8\\x> 5[/tex]
Thus, the solutions of the variable "x" are given by all the real numbers greater than 5.
Answer:
Option C
What is the function rule for the following situation? Rex paid $20 for a membership to the pool and pays $300 each time he goes to the pool.
y = 20x + 3
20 = 3x + y
y = x + 20
none of these
The function rule for the situation is none of the given options
What is the function rule for the situationFrom the question, we have the following parameters that can be used in our computation:
Membership = $20
Payment each time = $300 per visit
using the above as a guide, we have the following:
f(x) = Membership + Payment each time * x
substitute the known values in the above equation, so, we have the following representation
f(x) = 20 + 300* x
Evaluate
f(x) = 20 + 300x
Hence, the expression is f(x) = 20 + 300x
Read more about linear relation at
https://brainly.com/question/30318449
#SPJ1
none of the given options
None of the provided options in the question are correct.
The function rule that correctly represents Rex's situation, given that he paid a $20 membership fee and pays $300 each time he goes to the pool, would be a linear equation that includes a one-time fee (membership) and a per-visit cost. Let's define x as the number of times Rex goes to the pool and y as the total cost. Therefore, the equation should include the initial membership fee and the per-visit cost multiplied by the number of visits.
The correct function rule is y = 20 + 300x, where 20 represents the one-time membership fee and 300 represents the cost per pool visit. None of the provided options are correct. The equation signifies that for every visit to the pool, the total cost increases by $300, and the initial membership cost is $20.
Which is the same distance from zero on the number line as 25? 1.) 50 2.) 0 3.) −25 4.) −50
Answer:
-25
Step-by-step explanation:
-25 is the same distance away from zero as is 25.
Answer:
-25
Step-by-step explanation:
this is a question about absolute value. with absolute value, if the number is negative, u simply take off the negative sign. so, ur looking 4 the opposit of 25, which is -25
The price of a computer was decreased by 30% to £147. What was the price before the decrease?
A decrease by 30%, means that the price is now 70% of the original price ( 100% - 30% = 70%)
To find the original price divide the new price by the percent of the original price it is now.
147 / 0.70 = 210
The original price was £210
The price before the decrease is £210.
Given that,
The price of a computer was decreased by 30% to £147.Based on the above information, the calculation is as follows:
[tex]= 147 \div 70\%[/tex]
= £210
Therefore we can conclude that the price before the decrease is £210.
Learn more: brainly.com/question/6201432
Rewrite the expression using the distributive property.
8(4x+6y-2z)
A. 12x + 14y - 6z
B. -4x + -2y - 10z
C. 32x + 48y - 16z
D. 0.5x + 0.75y - 0.25z
Answer:
32x + 48y - 16z
Step-by-step explanation:
Evaluate -3x3 - 4x for x = -1. 1 7 -1
Answer:
-5
Step-by-step explanation:
-3 x 3 - 4x
x=-1
-3 x 3 - 4(-1)
-3 x 3 + 4
-9 + 4
-5
Hope This Helps! :D
Answer:
-3-4x
=-3(-1
=-3*(-1)+4
=3+4
=7
Step-by-step explanation:
that should be all you need to know
SOME ONE PLZ HELP): I need help on my apex y’all
Answer:
[tex]\large\boxed{A.\ 2^0}[/tex]
Step-by-step explanation:
[tex]\text{Use}\ \dfrac{a^n}{a^m}=a^{n-m}:\\\\\dfrac{2^6}{2^6}=2^{6-6}=2^0=1[/tex]
Given the quadratic function g(x)=x^2, find g(3x-2).
Answer:
[tex]g(3x-2) = (3x-2)^{2}[/tex]
Step-by-step explanation:
[tex]g(x)=x^{2}[/tex]
To do this, you must substitute [tex]3x-2[/tex] for x in the equation g(x)
[tex]g(3x-2) = (3x-2)^{2}[/tex]
Simplified this would be
[tex]9x^{2} -12x+4[/tex]
Ivan and Tanya share £150 in the ration 4 : 1
work out how much more Ivan gets compared to Tanya.
Add the ratio to get total shares: 4 +1 = 5
Divide the total amount to share by the total shares:
150 / 5 = 30
Now multiply each set of shares by that:
4 x 30 = 120
1 x 30 = 30
120-30 = 90 more
15. The temperature C, in degrees, that is equivalent to a temperature of F degrees Fahrenheit is given by graph of this equation shows the temperature in Celsius for the corresponding temperatures in Fahrenheit.
a. Explain how linear equations can be used in temperature conversion.
b. Explain how could you could use the conversion graph to find the normal body temperature in degrees Celsius, which is 98.6°F.
Answer:
A. How can the equation be used in temperature conversion?
You take the conversion equation C = (5/9) (F - 32) and you replace the F by the value of Fahrenheit degrees... then solve the calculations to get the degrees in Celsius.
For example, if you have 80°F to convert in °C:
C = (5/9) (80 - 32) = (5/9) (48) = 26.66 °C
B. How can you use the graph to find the body temp in C?
Using the graph will give a very imprecise measure due the scale of the graph.
But you would have to find 98.6 on the axis of X (it represents the °F), then go upwards until you find the line....
Then report that position on the line on the Y-axis (representing the °C) to get your measure.
Answer:
For A: The linear equation is [tex]C=\frac{5}{9}F-\frac{32}{9}[/tex]
For B: The temperature of normal body in degree Celsius is 37° C.
Explanation:
For A:Linear equations are defined as the equations in which the highest power of a variable is '1'. The general equation for a linear equation is:
[tex]y=mx+c[/tex]
where,
y = Y-coordinate
m = slope of the line
x = X - coordinate
c = intercept on y-axis
For the given equation:
[tex]C=\frac{5}{9}(F-32)[/tex]
The linear equation representation for the given equation is:
[tex]C=\frac{5}{9}F-\frac{32}{9}[/tex]
For B:We are given a value of temperature in degree Fahrenheit. To calculate its value in degree Celsius, we use the equation above.
Putting value of F = 98.6 in above equation, we get:
[tex]C=(\frac{5}{9}\times 98.6)-\frac{32}{9}\\\\C=37[/tex]
Hence, the temperature of normal body in degree Celsius is 37° C.
The figure is made up of a cylinder, a cone, and a half sphere. The radius of the half sphere is 3 inches. What is the volume of the composite figure?
Given.
Radius of the Half sphere is 3 inches.
From the figure;
Radius of half sphere= Radius of cylinder= Radius of cone=3inches
Height of cone= 4inches.
Height of cylinder=6inches.
Volume of cone=(πr²h)/3
=(π3²×4)/3
=(12π) inch³
volume of cylinder= πr²h=π3²6=54π inch³
Volume of half sphere= (4/3) π r³=π(4×3³)/3 (1/2)=π×4×9/2=18π inch³
Total area of Composite figure=(12π +54π +18π) inch³
=84π inch³
=(84)× 22/7inch³
=12×22 inch³
=264inch³
Hope it helps...
Regards;
Leukonov/Olegion.
Answer:
The volume of the composite figure is 84π ≅ 263.89 inches³
Step-by-step explanation:
Lets revise the rules of the volume of some figures
- The composite figure consists of :
# Half sphere with radius 3 inches
# Cylinder with radius 3 inches and height 6 inches
# Cone with radius 3 inches and height 4 inches
- The volume of the sphere is 4/3 π r³
∴ The volume of the half sphere = 1/2 × 4/3 π r³ = 2/3 π r³
- The volume of the cylinder is π r² h
- The volume of the cone is 1/3 π r² h
* Now lets solve the problem
- The volume of the half sphere
∵ The radius of the half sphere = 3 inches
∵ The volume of it = 2/3 π r³
∴ The volume = 2/3 × π × (3)³ = 18π inches³
- The volume of the cylinder
∵ The radius of the cylinder = 3 inches
∵ The height of the cylinder = 6 inches
∵ The volume of it = π r² h
∴ Its volume = π × (3)² × 6 = 54π inches³
- The volume of the cone
∵ The radius of the cone = 3 inches
∵ The height of the cone = 4 inches
∵ The volume of it = 1/3 π r² h
∴ Its volume = 1/3 π × (3)² × 4 = 12π inches³
- Add all the volumes to find the volume of the composite figure
∴ The volume = 18π + 54π + 12π = 84π = 263.89 inches³
* The volume of the composite figure is 84π ≅ 263.89 inches³
Travis traveled a total distance of 3 1/2miles. He rode the bus 1 1/4mile.He walked 2/3 mile.He rode in a car the remainder of the 3 1/2 miles. How far in miles did he ride in a car?
Answer: 1 5/12
Step-by-step explanation: You need to find a common denominator 3 and 4 are the denominators you can do 3 times 4 is 12 and 4 times 3 is 12, but whatever you do to the denominator needs to be done to the numerator so 2 times 4 is 8 and 1 times 4 is 4 then you have the fractions 8/12 and 3/12 then you just subtract and you get 1 5/12.
*Hard to explain*
Find the probability that the next 1,000 cars purchased in your city will all be the color blue.
Assuming that the probability of a car being colored blue is not equal to 0 or 1, then the most logical answer would be the smallest probability.
P= 0.001
Answer:
0.001
Step-by-step explanation:
gradpoint
John wants to measure the height of a tree. He walks exactly 100 feet from the base of the tree and looks up. The angle from the ground to the top of the tree is 33o . How tall is the tree?
Answer:
3300
Step-by-step explanation:
100 * 33