Answer:
Waves superimpose upon each other when they collide, while objects do not
Step-by-step explanation:
The main difference between the collision of waves and the collision of objects is simply the superposition principle.
When waves collide, they do not do so in the same way objects do. The superposition principle explains that waves can either collide in a constructive or destructive manner.
Case A: Waves colliding in a constructive manner
When waves collide in a constructive manner, this means that they are in phase, in simpler terms, it means that they have the same shape as they move through space-time. Constructive collision leads to a formation of a bigger wave with a higher amplitude. This is how stereo speakers operate. They produce louder sounds by releasing the same audio waves, causing them to superimpose upon each other.
Case B: Waves colliding in a destructive manner:
When waves are out of phase(i.e do not have the same shape as they move through space-time) and they collide, they try to cancel each other out, leading to a new wave with a weaker amplitude. This is how noise-cancelling headphones work. They emit an equal and opposite wave sound to the noise around your ears, thus cancelling it out.
x + 9 <4x plz awser
Answer:
x>3
Step-by-step explanation:
100 POINTS 100 POINTS 100 POINTS!!!
Don't just put random answer put real ones.
Wrong or Right?
For right just put right
For wrong just put wrong and the correct answer.
First correct answer gets brainliest!
Answer:
B and C
Step-by-step explanation:
Answer:
#1 is right
#2 is right
#3 is wrong
# 3 is b or c
Step-by-step explanation:
surry if im wrong
I have been stuck on this question for a while(NO SPAMMING IT IS ANNOYING)The formula used to find the area of a circle is πr² (π=pi). What is the area of a circle with a diameter of 16cm? Use pi = 3.14
Answer:
200.96
or
201 (if you round it up)
Step-by-step explanation:
1) Well, if we know that the diameter (D) is 16 cm, then we know that the radius (r) is 8 cm (D = 2 * r).
2) Next, we square (^2) the radius, and we get 64 (r^2 = r * r = 8*8 = 64)
3) Finally, we multiply π by 64, and we get 200.96 cm^2 (3.14 * 64) which is very close to 201 cm^2.
this is going to be my 13th reason please help me
Answer:
The radius of these cylinders is approximately 1 foot.
Step-by-step explanation:
According to this graph, the volume of the cylinder is directly proportional to its height, that is, radius remains constant. The expression of direct proportionality:
[tex]V \propto h[/tex]
[tex]V = k\cdot h[/tex] (1)
Where:
[tex]V[/tex] - Volume of the cylinder, in cubic feet.
[tex]h[/tex] - Height of the cylinder, in feet.
[tex]k[/tex] - Proportionality constant, in square feet.
Besides, the proportionality constant is described by this expression:
[tex]k = \pi \cdot R^{2}[/tex] (2)
Where [tex]R[/tex] is the radius of the cylinder, in feet.
If we know that [tex]h = 9\,ft[/tex] and [tex]V = 28.26\,ft^{2}[/tex], then the radius of the cylinder is:
[tex]k = \frac{V}{h}[/tex]
[tex]k = 3.14[/tex]
[tex]R = \sqrt{\frac{k}{\pi} }[/tex]
[tex]R \approx 1\,ft[/tex]
The radius of these cylinders is approximately 1 foot.
PLS HELP WILL MARK BRAINLIEST
Answer:
I believe it is D.
Step-by-step explanation:
This shows all the combinations of the dice roll as could go along with any of the coin toss solutions.
I hope I didn't confuse you lol! Hope this helps :)
A hot chocolate recipe calls for three teaspoons of cocoa for every cup of milk. How many teaspoons of cocoa are needed for a batch that uses three cups of milk?
Answer:
9 teaspoons are needed
Step-by-step explanation:
multiply 3 teaspoons by 3 cups to find the answer.
the answer is 9 teaspoons.
9 teaspoons are needed for a batch that uses three cups of milk.
What is the fundamental principle of multiplication?Multiplication is the mathematical operation that is used to determine the product of two or more numbers. If an event can occur in m different ways and if following it, a second event can occur in n different ways, then the two events in succession can occur in m × n different ways.
We are given that hot chocolate recipe calls for three teaspoons of cocoa for every cup of milk.
We need to find multiply 3 teaspoons by 3 cups to find the answer.
Therefore, we will use unitary method;
3 teaspoons x 3 cups = 9
Hence the answer is 9 teaspoons.
Learn more about multiplications;
https://brainly.com/question/14059007
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Help please
Mathematics
Answer:
21.5sqft
Step-by-step explanation:
The area of the square is 10ft*10ft = 100sqft
The area of the circle is 5ft*5ft*pi = 25pi sqft
We're supposed to use 3.14 for pi, so the circle is around 25*3.14 sqft = 78.5sq ft
The area left over is 100sqft - 78.5sqft = 21.5sqft
Answer:
21.5 sq. feet
Step-by-step explanation:
Find area of squareFind area of circleSubtract area of circle from square to get area of remaining clothHelp me with this please
Answer:
1) <2 ; 60
2) <3 ; 60
3) <4 and <3. <4 = 120 and <3 = 60
4) <1, <3, and <4 = 125. <2 = 55
Step-by-step explanation:
1)
Corresponding angles are equal
2)
Alternate interior angles are equal
3)
<4 and <3 are same-side interior angles. This makes them supplementary angles
<4 = 120
<3 = 60
4)
<1 = <4 = <3. All of these angles equal 125.
<2 + <1 = 180
<2 + 125 = 180
<2 = 55
what is the slope of the line?
Answer:
2/3
Step-by-step explanation:
rise/run
2 up, 3 right
Answer:
[tex]m=\frac{2}{3}[/tex]
Step-by-step explanation:
Divide 9 by 3 then subtract two double the result
Answer:
2
Step-by-step explanation:
9 ÷ 3 - 2 × 2
3 - 2 × 2
1 × 2
2
Dad is getting food ready for my birthday party! Including me, there will be 18 people at the party. Dad is baking cookies for us! He can bake 24 cookies per batch.
How many batches should I tell Dad to make so we can each have 4 cookies?
Find the surface area of this prism 6.72,5.78,12.7
Answer:
493.29
Step-by-step explanation:
evaluate this pls quiick i have 18 min left online exams help
-0.0004 x 0.02
Given:
The expression is:
[tex]0.0004\times 0.02[/tex]
To find:
The value of the given expression.
Solution:
We have,
[tex]0.0004\times 0.02[/tex]
It can be written as:
[tex]=\dfrac{4}{10000}\times \dfrac{2}{100}[/tex]
[tex]=\dfrac{8}{1000000}[/tex]
[tex]=0.000008[/tex]
Therefore, the value of the given expression is 0.000008.
I need help with these questions.
Please show workings.
Question 1:
A trader made a profit of 20% on a radio which he sold for N144 .Calculate the cost price of the radio .
Question 2:
A motor dealer sold a car at a loss of 20% by selling it at N10,000 . Find the cost price.
Note :
Cost price formula :
[tex]C.P = S.P-P \\ or S.P+L[/tex]
Selling Price Formula :
[tex]S.P = C.P + P \\ or C.P - Loss[/tex]
Profit Percentage ( P% ) formula :
[tex] P \% = P/C.P × 100 \\ l \% = l/C.P × 100[/tex]
Answer:
Question 1
Given
SP = 144P = 20%CP = xUse formula and solve for x:
SP = CP + P144 = x + (20% of x)144 = x + 0.2x144 = 1.2xx = 144/1.2x = 120Cost price is N 120
Question 2
Given
SP = 1000P = -20% (negative because of loss)CP = xUse formula and solve for x:
SP = CP + P10000 = x - (20% of x)10000 = x - 0.2x10000 = 0.8xx = 10000/0.8x = 12500Cost is N 12500
Find (12.34) x (0.7). Explain how you got it
The area of a square piece of glass is 36 square centimeters. How long is each side?
Answer:
6 centimetres
Step-by-step explanation:
Square root 36 = 6
Answer:
6
Step-by-step explanation:
A = x^2
x = √A
x = √36
√36 = 6
Please help it's for trig
Answer:
-4
Step-by-step explanation:
Given the expression
h(x) = -x^2 +4x
h(-2) = (-2)^2 + 4(-2)
h(-2) = 4 + (-8)
h(-2) = 4 - 8
h(2) = -4
Hence the value of the function when x = -2 is -4
CAN SOMEONE PLEASE HELP ME OUT??
Answer:
D. -1≤x<4
Step-by-step explanation:
4-x<0 and x+1≥0
x<4 and x≥-1
so D. -1≤x<4
5 cm
3 cm
9 cm
Area =
The first term of a geometric sequence is 5 and the common ratio is 2. What is the 4th term of the sequence?
Answer:
80Step-by-step explanation:
[tex]a_n=a_1\cdot r^{n-1}\\\\a_1=5\\r=2\\n=4\\\\a_4=5\cdot2^4=5\cdot16=80[/tex]
condense this logarithm to a single logarithm
6log 5u
Answer:
log_5(u^6)
Step-by-step explanation:
According to log rules, log_a(b^n) = nlog_a(b), reversing this we get that log_5(u^6) is what you are looking for.
SIMPLEE!!! WRITE AN EXPRESSION!
Factorise 3c^2-c
Please help me quick
Answer:
c(3c - 1)
Step-by-step explanation:
3c² - c
Common factor = c
Factored:
c(3c - 1)
NO LINKS PLEASE- OR I SWEAR-
What is the median (Q2) of this data set?
(TYPE the NUMBER)
Answer:
70 or 75 70 is on there so that my best answer
Step-by-step explanation:
which expression is equivalent to -6(3 + 4x)
Answer:
−18 − 24x
Step-by-step explanation:
Give me Brainllest
Answer:
1/4 (1-3x)
Step-by-step explanation:
someone said it
100 POINTS
Choose ONE of the following questions to answer in the box below:
1) Why is point (100, 2) on the graph?
2) What is the x-intercept of the graph? Explain how you know.
3) When will the graph meet the line y = 5 ? Explain how you know.
Answer:
See below
Step-by-step explanation:
Given function:
y = log₁₀ (x)Questions1) Why is point (100, 2) on the graph?
Because:
log₁₀ (100) = log₁₀ (10²) = 2 log₁₀ (10) = 22) What is the x-intercept of the graph? Explain how you know.
The x-intercept is the value of x when y = 0:
log₁₀ (x) = 0x = 10⁰x = 1The x-intercept is (1, 0)
3) When will the graph meet the line y = 5 ? Explain how you know.
log₁₀ (x) = 5x = 10⁵x = 100000When x = 100000
Step-by-Step-by-step explanation:
An engine is operating at 25% of its full power. Which number line shows a point that
represents 25%?
Answer:
The first line
Step-by-step explanation:
A regular octagon has a perimeter represented by the expression: p= 48y - 40. Write an expression to represent the length of one side of the octagon
Answer:
6y-5
Step-by-step explanation:
(48y- 40)/8 because an octagon has 8 equal sides.
-hope this helps:)
Mr. Pete just got a great deal at Lowe’s on tiles for his new patio. He wants to
tile his patio in the shape that is rectangular. His patio measures 108 inches by
144 inches. Find the fewest square tiles he can use without cutting any of them.
Answer:
The fewest square tiles he can use without cutting any of them = 12 square tiles
Step-by-step explanation:
The given dimensions of Mr. Pete's rectangular patio = 108 inches by 144 inches
The area of the patio = 108 in. × 144 in. = 15,552 in.²
We note that when square tiles are used the must fit both the length and the with of the rectangular patio
Therefore, we have;
The dimensions of the square tiles that the fewest number of tiles is the highest common factor, HCF, of 108 inches and 144
The HCF of 108 and 144 are found from by the prime factors as follows;
108 = 2² × 3³ = 2² × 3² × 3
144 = 2⁴ × 3² = 2² × 3² × 4
From which we have;
The HCF of 108 and 144 = 2² × 3² = 36
Therefore, the size of the sides of the square tiles that will give the fewest number of tiles is 36 inches
The number of the 36 inches square tiles that fit into the length of the rectangular patio = 144 inches/(36 inches/tile) = 4 tiles
The number of the 36 inches square tiles that fit into the breadth of the rectangular patio = 108 inches/(36 inches/tile) = 3 tiles
The total number of tiles he will use = (4 × 3) tiles = 12 tiles = The fewest square tiles he can use without cutting any of them.
Use each student's quiz score to answer the questions.
Annika's quíz scores
60%, 75%, 78%, 80%, 85%, 85%, 90%
Josiah's quíz scores
62%, 85%, 68%, 79%,83%, 90%,92%
Annika has a mean that is
mean,
Josiah's median is______
Annika's median
The range is
Who has the lowest interquartile range?
Answer:
Annika has a mean that is 79%