Answer:
The answer is A. 231
Step-by-step explanation:
I took the test on quizizz.
Find the surface area of the cone with a diameter of 12 centimeters and a slant height of
85 millimeters.
Please answer due in 20 minutes
Answer:
lateral surface area is 160.14 square cm.
Total surface area is 273.16 square cm
Step-by-step explanation:
Lateral surface area of cone is given by [tex]\pi rl[/tex]
where r is radius of cone
and l is slant height of cone.
l = 85 millimetres
we know that 10 millimetres is equal to 1 cm
Thus 85 millimetres is equal to 8.5 cm
Thus slant height(l) in cm is 8.5[tex]\pi rl\\=>\pi 6*8.5\\=> 3.14*51\\=>160.14[/tex]
we will use value of [tex]\pi[/tex] as 3.14
Diameter of cone = 12 cm
we know that radius is equal to half of Diameter
radius of given cone = 1/2 *Diameter = 1/2 * 12 = 6 cm.
Thus lateral surface area of cone is given by
[tex]\pi rl\\=>3.14*6*8.5\\=>153[/tex]
Thus, lateral surface area is 160.14 square cm.
Area of base of cone will be area of circular base
area of circle is given by [tex]\pi r^2[/tex]
Thus area of base is given below
[tex]\pi r^2\\=>3.14*6^2\\=>113.04[/tex]
area of base is 113.04 square cm
Total surface area of cone is sum of area of base and lateral surface area
Total surface area = 160.14+113.04 = 273.16 square cm.
Let X and Y be the following sets X={5,6,10,12,15,18} Y={6,10,12,15} which of the following is the set XUY
Answer:
{5,6,10,12,15,18}
Step-by-step explanation:
X={5,6,10,12,15,18}
Y={6,10,12,15}
XUY={5,6,10,12,15,18}
You don't need to put a number more than once.
what is the value of x
Answer:
73
Step-by-step explanation:
2x+x+53+88=360
Add up the numbers together.
3x+141=360
Subtract 141 from 360
3x=219
Divide 219 by 3
x=73
If the size of a scale drawing is 50 x 36 cm and the scale factor is 5:1 what is the size of the actual object?
Answer:
50*30=1500
Step-by-step explanation:
Evan has x red marbles, twice as many as blue marbles as red marbles and y yellow marbles. How many marbles does Evan have all together in terms of x and y?
Answer:
3x+y
Step-by-step explanation:
x+2x+y
=3x+y
For what values of x is x^(2)-36=5x true?
Answer:
for
x= -4 and
x= 9
..............
PLS HELP ASAP!!!!!
(Classify △LMN. Choose 2 answers).
Ans : A and F
Step-by-step explanation:
Answer:
As shown in picture:
Triangle LMN has 3 angles which are smaller than 90
=> Acute triangle (option C)
Triangle LMN has 2 sides which are equal in length (LM and LN)
=> Isosceles triangle (Option F)
Hope this helps!
:)
Dan buys a car for £900.
It depreciates at a rate of 1.2% per year.
How much will it be worth in 4 years?
Give your answer to the nearest penny where appropriate.
$857.58 is the price of car after 4 years.
What is Percentage?percentage, a relative value indicating hundredth parts of any quantity.
Given,
Dan buys a car for £900.
It depreciates at a rate of 1.2% per year
We need to find the cost of car after 4 years.
1.2/100=0.012
Now multiply 0.012 with 900
10.8
So for first year it will be 900-10.8=889.2
0.012×889.2
10.67
For second year 889.2-10.67=878.53
0.012×878.53=10.54
For third year 878.53-10.54=867.99
0.012×867.99=10.41
For fourth year 867.99-10.41=857.58
Hence, after 4 years the price of car will be 857.58.
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PLEASE HELP ME!!
Read this passage from Part 1 of “The Purloined Letter.”
“And what, after all, is the matter on hand?” I asked.
“Why, I will tell you,” replied the Prefect, as he gave a long, steady, and contemplative puff, and settled himself in his chair. “I will tell you in a few words; but, before I begin, let me caution you that this is an affair demanding the greatest secrecy, and that I should most probably lose the position I now hold, were it known that I confided it to any one.
“Proceed,” said I.
What is the most likely reason Poe uses a slow pace in this part of the scene?
The Purloined Letter, Part 1
to provide foreshadowing of the story (not correct, i tried)
to reduce the tension in the story
to summarize the story that is about to be told
to increase suspense about the story to come
Answer:
To increase suspense
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
To increase suspense about the story to come
I just took the test and got it right. Hope this helps!! :)
A rectangle has a height of xxx and a width of 7x-47x−47, x, minus, 4.
Express the area of the entire rectangle.
Answer:
[tex]7x^{2}-4x[/tex]
Step-by-step explanation:
Area of a rectangle is expressed as Length * Width
Given the length/height = x
width = 7x-4
Area of the rectangle = [tex]x(7x-4)[/tex]
On opening the bracket;
Area of the rectangle = [tex]7x^{2}-4x[/tex]
What’s 0.005 recurring as a fraction
Answer:
0.005 = 5/1000 = 1/200
Hope it helps
In the derivation of the quadratic formula by completing the square, the equation is created by forming a perfect square trinomial. What is the result of applying the square root property of equality to this equation?
Answer:
The result is
x + b/2a= ±√[(b² - 4ac)/2a]
Step-by-step explanation:
In the derivation of the quadratic formula by completing the square, the equation is created by forming a perfect square trinomial
ax² + bx + c = 0
x² + (b/a)x + c/a = 0
x² + 2(b/2a)x + b²/4a² - b²/4a² + c/a = 0
(x + b/2a)² - b²/4a² + c/a = 0
(x + b/2a)² = b²/4a² - c/a
(x + b/2a)² = (b² - 4ac)/2a
Apply square roots to both sides
x + b/2a= ±√[(b² - 4ac)/2a]
it can also be explained as B on edg :)
NEED HELP ASAP - 35 Pts. + BRAINLIEST for the best answer!!! (Please show your work)
Question:
The smallest insects that a bat can detect are approximately the size of one wavelength of the sound the bat makes (sonar). What is the minimum frequency of sound waves required for the bat to detect an insect that is 0.60 cm long? (Assume the speed of sound is 340 m/s.)
Answer:
a.
f
≅
580
k
H
z
b.
T
=
1.7
⋅
10
−
6
s
Explanation:
a. The formula that relates frequency and wavelength is
f
=
v
λ
where f is frequency, v is the velocity of propagation (velocity of sound in this case), and
λ
is the wavelength.
To detect this fly,
λ
needs to be
5.7
⋅
10
−
4
m
, (or shorter). Using
331
m
s
for the speed of sound,
f
=
331
m
s
5.7
⋅
10
−
4
m
=
58.07
⋅
10
4
s
−
1
≅
580
k
H
z
b. Period,
T
, is the reciprocal of frequency.
T
=
1
f
=
1
58.07
⋅
10
4
s
−
1
=
0.0172
⋅
10
−
4
s
≅
1.7
⋅
10
−
6
s
I hope this helps,
Step-by-step explanation:
What is 1/4 written as a precent
So the right answer is 25%.
Look at the attached picture
Hope it will help you..
Good luck on your assignment
~pragya
Answer:
25%
Step-by-step explanation:
1/4
Multiply the numerator and denominator by 25
25/100
Write as a division expression
25 ÷ 100
Divide
0.25
Multiply the decimal by 100 to get a percentage
0.25 * 100
25%
Hope this helps :)
Mums are plants that bloom in the fall.
Which statement describes the photoperiodism of mums?
They bloom when the days are longer.
O They bloom when the nights are longer.
O They bloom when the temperatures are warmer.
They bloom when the temperatures are colder.
My reasoning is the mention of PHOTOPERIODISM. Photoperiodism means the reaction to length of a day or night cycle, since fall is the beginning of shorter days and longer nights, it is only reasonable that the answer is that THey bloom when the nights are longer.
Hope this helps, if not, comment below please!!!
Answer:
D
Step-by-step explanation:
100%
A plane is flying at an elevation of 25000feet. It is within the sight of the airport and the pilot finds that the angle of depression to the airport is 14 degrees. Find the diagonal distance between the plane and the base of the airport.
Answer:
The distance between the plane and the base of the airport = 103339.14 ft
Step-by-step explanation:
Consider the diagram attached.
We can notice that the a triangle (ABC) can be formed between the plane, the airport, and a vertical line drawn from the ground to the plane showing its altitude.
The angle of depression is 14 degrees. This means that angle BAC is 90 - 14 = 76 degrees.
From triangle laws, we will have that [tex]cos 76 = \frac{Altitude}{AC}[/tex]
[tex]AC = \frac{25000}{(cos 76)} = 103339.14 ft[/tex]
Hence, the distance between the plane and the base of the airport = 103339.14 ft
The diagonal distance between the plane and the base of the airport is 103339.14 ft.
This situation forms a right angle triangle.
The plane is flying at an elevation of 25000 ft.
The elevation is the height or opposite side of the triangle.
The diagonal distance between the plane and the base of the airport is the hypotenuse of the triangle.
Therefore, using trigonometric ratio,
sin 14° = opposite / hypotenuse
sin 14° = 25000 / d
d = 25000 / sin 14
d = 25000 / 0.2419218956
d = 103339.137361 ft
Therefore, the diagonal between the plane and the base of the airport is 103339.14 ft.
learn more on depression here: https://brainly.com/question/13545523?referrer=searchResults
NEED YOUR HELP ASAP!!!!
Answer:
1 thing that would be true is that one green triangle weighs the same as three blue squares. One thing that cannot possibly be true is that a green triangle weighs the same as a blue square.
Step-by-step explanation:
Sam paid 75 for 15hamburgers what is the unit price of one hamburger
The cost of one hamburger is 5
look at the attached picture
Hope it will help you
Good luck on your assignment
｡☆✼★ ━━━━━━━━━━━━━━ ☾
15 burgers = 75
Divide by 15 to get the price of 1
1 burger = 5
Have A Nice Day ❤
Stay Brainly! ヅ
- Ally ✧
｡☆✼★ ━━━━━━━━━━━━━━ ☾
Given the function g(x) = 7x - 14 find its inverse function.
Answer:
The inverse is 1/7x +2
Step-by-step explanation:
y = 7x - 14
Exchange x and y
x = 7y-14
Solve for y
Add 14 to each side
x+14 = 7y-14+14
x+14 = 7y
Divide each side by 7
(x+14)/7 = 7y/7
1/7x +2 = y
The inverse is 1/7x +2
Answer:
g^-1(x)=x/7+2
Step-by-step explanation:
y=7x-14
7y-14=x
7y=x+14
y=1/7x+2
g^-1(x)=x/7+2
What is the measure of the missing angle?
Answer:
answer is 60
Step-by-step explanation:
because if the angle is 60 degrees anywhere in the triangle means its an equilateral triangle making all the angles 60 degrees
Answer:
60 degrees
Step-by-step explanation:
Every Triangle has an angle of 180 degrees
so if we add all of the written angles which is 25 + 35 + 60 = 120
we take 180 degrees and subtract it with the previous answer (120)
180 - 120 = 60
Therefore it is 60 degrees
square root of 476 is?
Answer:
The square root of 476 is 21.8
Answer: The answer is 21.817 I hope that helps!
Step-by-step explanation:
Which system of equations has one solution?
On a coordinate plane, 2 lines intersect at one point.
On a coordinate plane, 2 lines are parallel to each other.
On a coordinate plane, a line has a positive slope.
Answer:
A
Step-by-step explanation:
Hence, the option (A) is the correct answer i.e., On a coordinate plane, two lines intersect at one point
What are the one solution ?
One Solution Equation is when an equation has only one solution. This means that when you solve an equation, the variable can only be subsituted by one number to make an equation true.
So, when the two lines passes and intersect at one point it forms one solution so that is why option (A) is correct i.e., On a coordinate plane, two lines intersect at one point.
Hence, the option (A) is the correct answer i.e., On a coordinate plane, two lines intersect at one point
To know more about the one solution
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There are 15 dogs, 22 cats, and 4 rabbits at a shelter. Each dog needs a collar, bowl, and toy. Each cat needs a collar, bowl and 2 toys. Each rabbit needs a bowl. How many total toys will the shelter need?
Answer:
137 toys
Step-by-step explanation:
You take the number of dogs = 15
and how many things each dog needs = a collar, bowl, and toy
and you multiply 15 by three to get the number of collars, bowls, and toys each dog needs. Then repeat this process and add all of your answers
Dog = 60
Cat = 88
Rabbit = 4
88 + 60 + 4 = 137
(If the collar, and bowls don't count as toys then just message me and I will redo the math for you.)
The function f(x) = 3(1.7)x gives the length (in inches) of an image after being enlarged by 10% x times. What is the length of the image after it has been enlarged 4 times? Round your answer to the nearest hundredth.
Answer:
A = a + b2h = 9 + 42 · 10 = 65
Step-by-step explanation:
Find the volume of the sphere with a radius of 2 Either enter an exact answer in terms of pi or use 3.14 for pi and round your final answer to the nearest hundredth
Answer:
33.51
Step-by-step explanation:
The volume for finding a sphere is V= 4/3 x π x r ^3
(V=volume, r= radius)
V= 4/3 x π x r ^3
V= 4/3 x π x 2 ^3
2^3= 8
Calculator: 4 ÷ 3 x 3.14 (OR PI SYMBOL) x 8
ANSWER: 33.51
The park closes at 2:30 P.M. There is a 15−minute break between each game played at the park, and each game takes the same amount of time as Hamid's soccer game. How many more games can be played before the park closes?
Complete question:
The park closes at 2:30 P.M. There is a 15−minute break between each game played at the park, and each game takes the same amount of time as Hamid's soccer game. How many more games can be played before the park closes? Hamid's soccer game time is 7:00 to 9:15
Answer:
2 more games can be played before the park closes.
Step-by-step explanation:
Given that Hamid's soccer game time is from 7:00 to 9:15 and there's a 15 minute break between games played, the next game time would be: 9:15 + 15 = 9:30
The time for each game would be calculated as:
stop time - start time = 9:15 - 7:00 = 2:15.
Thus, each game time = 2hrs 15mins
The next game time would be:
9:30 + 2:15 = 11:45
This means the next game would be from 9:30 to 11:45
After this, there would be another game(a second extra game) since the park closes at 2:30PM.
Therefore, the next game time would be:
11:45 + 15 mins break = 12:00
The game duration =
12:00 + 2hrs 15 mins = 14:15 or 2:15PM
Considering the fact that the park closes by 2:30 PM, 2 more games will be played.
Divide and answer in simpilist form: 1/2 ÷4
Answer:
1/8
Step-by-step explanation:
1/2 ÷4
Copy dot flip
1/2 * 1/4
1/8
Answer:
1/8
I want brainliest!!! :)
Step-by-step explanation:
1/2 divided by 4
1/2/4 = 1/8
By what number do you multiply the radius of a circle to double its area? Show the process to get the answer.
Answer:
Area of circle = πr²
New doubled area = πR² ( r ≠ R )
As it is double of older area :
πR² = 2πr²
R² = 2r²
R = √2r
Thus we have to multiply the radius to √2 to double its area
The recommended daily allowance of cholesterol is 300 mg. What is 80% of the recommended daily allowance of cholesterol?
Answer:
240 mg
Step-by-step explanation: 300 * .8 = 240
I will give the brainliest to whoever answers correctly.
Write the expression in radical form
(144x)^1/2 (simplify your answer) thankyou!!
Answer:
12[tex]\sqrt{x}[/tex]
Step-by-step explanation:
(144x)^1/2
(ab) ^ 1/2 = a^1/2 b^1/2
144 ^ 1/2 x^1/2
12 x^1/2
In radical form
12[tex]\sqrt{x}[/tex]