Answer:
When someone speaks their vocal cords vibrate. That sends sound waves through the air. It's just like dropping a rock in the water and watching the waves move out in a circle. For every different sound, there's a different wave. In the same way, when a student speaks, his/her vocal cords vibrate and send sound waves through the classroom. Sound is produced when an object vibrates, creating a pressure wave. This pressure wave causes particles in the surrounding medium (air, water, or solid) to have vibrational motion. As the particles vibrate, they move nearby particles, transmitting the sound further through the medium.
I hope this helps :)
what is the given variables of (ab²) ÷ a + 24 – b; a = -2 b= 3 ?
Answer:
-18/19
Step-by-step explanation:
(ab²) / a + 24 - b
(-2)(3)² / -2 + 24 - 3
-18/19
Answer:
57
Step-by-step explanation:
You do the parenthesis first so:
(-2×3²)÷ 3 is 36
36 + 24 -3
36+24 = 60
60 -3 = 57
57 is the Answer.
The perimeter of a square is 192 centimeters. If the square is dilated by a scale factor of 0.25, what is the length of each side of the new square?
Answer:
60cm
Step-by-step explanation:
perimeter of a square=4L
192cm=4L
L=48cm
Dilated by ratio 0.25
1 : 0.25 = 48 : 12
New length = 48+12 = 60cm.
What is the median of the data set: {92, 63, 22, 80, 63, 71, 44, 35}A)63B)80C)92D)35
Answer: A: 63
Step-by-step explanation:
How i remember doing this, is that I put the numbers in ascending order (as in lowest to highest) and once I'm done i look for the middle number, so you have 22,44,63,63,71,80,92 it helps me by looking at the numbers on the right and left, or put them in groups, so we have 22,44,63 (that's one group) then we have 71,80,92 (that's another group) so the only number we have left is 63 the middle number, that's your answer :]
Answer:
it is 63
Step-by-step explan
What is the side lengths, in inches, of a cube with a volume of 11 cubic inch?
Answer: a≈2.22
V=a3
a=V⅓=11⅓≈2.22398in
Step-by-step explanation:
Bonus: A rectangle has a length of 3x - 4 and a width of 3x + 4. Write a polynomial to represent the area of
the rectangle. (Hint: Area = Length x Width)
: A bottle that is 1/3 full would have what number recorded in inventory if you record to the nearest tenth?
The value of 1/3 of the volume of a bottle recorded in inventory is
rounded to the nearest tenth to give 0.3 of a bottle.
How can the correct value to record be known?The amount of the content in the bottle = 1/3 × The volume of the bottle
1/3 = [tex]\mathbf{0.\overline 3}[/tex] = 0.333.....
Rounding the above value to the nearest tenth, we have;
The second digit after the decimal place is less than 5, which gives;
1/3 ≈ 0.3
Given that the values in the inventory, we have;
In the inventory, the value to be recorded is 0.3 of a bottle.
Learn more about rules for rounding numbers here:
https://brainly.com/question/11308484
convert 6 1/4 lb to ounces.
A. 25/64
B. 100 ounces
c. 125 ounces
D. 1,250 ounces
PLEASE HELP!!!!!
Answer:
B 100 ounces
Step-by-step explanation:
There's 16 ounces in a pound. So multiply 6.25 by 16 to get 100.
Justin, Cam, and Ben are playing a board game where exactly one player will win. Ben estimates that Justin has a 20%, percent chance of winning each game and that Cam has a 50% percent chance of winning each game.
What is the probability that Ben will win the board game?
Answer:
30%
Step-by-step explanation:
If Justin has a 20% chance and Cam has a 50% chance that adds up to 70%
But you need to get to 100% so all you do is
70 - 100 = 30
30%
Making an inference is the second part of the process of investigating a
question using data.
A True
B. False
Help!!!
Answer:
The answer is False
what is the equation of the line that passes through the points (2,-4) (-4,5)
SHOW WORK
Answer:
y=−3/2x−1
Step-by-step explanation:
hope this helps brainliest appreciated
Rectangle ABCD was dilated to create rectangle A'B'C'D. Triangle A B C D is dilated to form triangle A prime B prime C prime D. Side B C is 3. 8 units. Side A prime B prime is 15 units and side B prime C prime is 9. 5 units. What is AB? 6 units 7. 6 units 9. 5 units 12 units.
The measure of the side AB is 6 units, the correct option is A.
Given
Rectangle ABCD was dilated to create rectangle A'B'C'D.
Triangle A B C D is dilated to form triangle A prime B prime C prime D.
Side BC is 3.8 units.
Side A prime B prime is 15 units and side B prime C prime is 9.5 units.
What is a rectangle?A rectangle is a type of quadrilateral that has its parallel sides equal to each other and all four vertices are equal to 90 degrees.
Here A'B'C'D is a dilation of ABCD, then the following relationship must exist:
[tex]\rm A'B' ; \ AB = B'C' ;\ BC\\\\15; AB =9.5 ; \ 3.8\\\\\dfrac{AB}{15}=\dfrac{3.8}{9.5}\\\\AB =\dfrac{3.8 \times 15}{9.5}\\\\ AB =\dfrac{57}{9.5}\\\\AB =6 \ units[/tex]
Hence, the measure of the side AB is 6 units.
To know more about rectangles click the link given below.
https://brainly.com/question/19961478
Answer:
6 units
Step-by-step explanation:
took test ;)
HELP ME PLEASE IF YOU DO I WILK GIVE YOU POINTS
THANK YOU SO MUCH
Answer:
1. 54 2. 2$
Step-by-step explanation:
1. total students= 331
n.o of buses=6
now,
total no of students travelling through bus,
=331-7
=324
now,
324÷6
=54
2.
total money=24$
remaining money= 10$
spent money on pencil= 24-10$
= 14$
now,
7 pencils cost= 14$
1 pencil cost= 14÷7$
=2$
In a shelter 15% of the animals are puppies, 45% are cats, and the rest are adult dogs. Based on this information ,if there are 50 animals at the shelter how many are adult dogs ?
Select the statement that shows equivalent measurements.
6,400 milliliters = 0.64 liters
6,400 milliliters = 64 liters
64,000 milliliters = 6.4 liters
64,000 milliliters = 64 liters
Answer:
64,000 milliliters = 64 liters
so the last option
Step-by-step explanation:
HELP ASAP OMLLLLLLLLLL
Answer:
The answer is $200
Step-by-step explanation:
Given;Dan has saved $80 so far to buy a skateboard.This is 40% of the price of the skateboard.To Find;The total amount of skateboard.Now, Let the full price be y we get,
y × 40/100 = 80
y × 2/5 = 80
2y/5 = 80
2y/5 × 5 = 80 × 5
2y = 400
2y/2 = 400/2
y = 200
Thus, The full price of skateboard is $200.
-TheUnknownScientist 72
Simplify the following expression. Will give brainliest!
Answer:
15400√5−45π
Step-by-step explanation:
Rewrite the expression, pull the terms out from the radical, cancel the common factors, and multiply.
Answer:
15400 √5 -45π
Step-by-step explanation:
Amy has 3 pieces of rope that have lengths of 15 ft, 20 ft, and 30 ft. If Amy cuts each of the ropes into 3-ft pieces, how many 3-ft pieces of rope will she have?
Can someone please answer this, I am so confused.
Carl is standing at the top of 35 Ft cliff looking down at a rock for motion in the sea. He estimates the angle of depression is 30' . What is the horizonal distance from Carl to the island?
The horizontal distance between Carl and the rock at sea is approximately 60.62ft.
Data;
Angle = 30 degreeOpposite = 35Adjacent = xTrigonometric RatioGiven the angle of depression from his point to the sea, we can use trigonometric ratio to calculate for the horizontal distance from his location to the bottom of the sea.
SOHCAHTOA
Since we have the value of angle and opposite and we need to calculate the adjacent side of the right-angle triangle, we can use the tangent of the angle to this effect.
[tex]Tan\theta = \frac{opposite}{adjacent} \\tan 30 = \frac{35}{x}\\ x = \frac{35}{tan30}\\ x = 60.62ft[/tex]
The horizontal distance between Carl and the rock at sea is approximately 60.62ft.
Learn more on trigonometric ratio here;
https://brainly.com/question/12172664
Which has a greater value 3/10 or 13/20
13/20 is bigger
To compare these two fractions, we make them both have a common denominator. I will be using 20 as the common denominator.
3/10 * 2
= 6/20
6/20 < 13/20
13/20 is bigger.
The inequality equation is 13/20 > 3/10
What is an Inequality Equation?Inequalities are the mathematical expressions in which both sides are not equal. In inequality, unlike in equations, we compare two values. The equal sign in between is replaced by less than (or less than or equal to), greater than (or greater than or equal to), or not equal to sign.
In an inequality, the two expressions are not necessarily equal which is indicated by the symbols: >, <, ≤ or ≥.
Given data ,
Let the inequality equation be represented as A
Now , the value of A is
Substituting the values in the equation , we get
Let the first fraction be p
Now , the value of p = 3/10
Let the second fraction be q
Now , the value of q = 13/20
On simplifying the equations , we get
p = 0.3
q = 0.65
And , q > p
So , the the value of 13/20 is greater than 3/10
Hence , the inequality is 13/20 > 3/10
To learn more about inequality equations click :
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#SPJ2
Helppppppp pleaseeee
Answer:
please write the question here I cannot see it clearly in the photo
It’s spring season once more and Jo wants to grow colourful flowering plants. She decides to make 16 raised flower beds, each measuring 1m x 4m x 0.5m.
(i) Calculate the volume of soil required to fill the 16 flower beds.
(ii) If soil is available only in 40 litre bags, how many such bags will she have to buy to make the 16 flower beds?
Answer:
(i) 32 cubic meters, (ii) 800
Step-by-step explanation:
(i) 1 x 4 x 0.5 = 2 m3, x 16 = 32
(ii) 1000 litre per m3 = 32,000 litres required divided by 40 = 800 bags.
Binod lost one half of his money. He gave the 2/5 of the remainder to his uncle and one fourth to his brother. If he had Rs 2000 at first, how much money is left with him?
Answer:
350
Step-by-step explanation:
lost one half of his money 2000/2 =1000
2/5 *1000 = 400 to his uncle
1/4 *1000 = 250 to his brother
so he gave 400+250 =650
remaining purse with binod is 350
Please help will give brainiest
Answer:
heres your answer hope this hepls
i need brainliest for level up please
what was the water level at 0 minutes when Henry began to fill the tank?
Answer:
9
I hope this helps and have a good day
The triangles shown below must be congruent.
O True
O False
The tax rate at this restaurant is 9. 5%. Some other person’s sales tax is $1. 61. How much was their subtotal?
Answer:
1.76295
1.76( 1 dp)
Step-by-step explanation:
[tex]$1. 61[/tex]
[tex]1.61 \times 9.5 \\ 1.61 \times \frac{9.5}{100} \\ \frac{1.61}{1} \times \frac{9.5}{100} \\ \frac{ 15.295 }{100} \\ = 0.15295 \\ add \: 0.15295 \: to \: 1.61 \\ = 1.61 + 0.15295 \\ = 1.76295 \\ approx = 1.76[/tex]
If a box of 15 cookies cost $9 dollars what is the cost of 1 cookie
Answer:
$1.66 i think
Step-by-step explanation:
because you divide 15 and 9
The image is an example of which type(s) of symmetry.
Answer:
D Both
Step-by-step explanation:
It's a regular hexagon which means it will look the same even if you rotate or cut it
Answer:
Both rotational and reflectional
Step-by-step explanation:
Find the solution of the system of equations.
X – 10y = 18
- 6x – 10y = 32
Answer: x = 46, y = 2.8
Step-by-step explanation:
equation 1: x - 10y = 18
equation 2: -6x - 10y = 32
The first equation can be re-written as: x = 18 + 10y
This can be substituted into the second equation and solved:
-6(18+10y) - 10y = 32
-108 + 60y - 10y = 32
50y = 140
.: y = 2.8
Using this value of y we can find x:
x = 18 + 10y
x = 18 + 10(2.8)
x = 18 + 28
x = 46
So, our solutions are: x = 46, y = 2.8
16 divided by 2 radical 29
Answer:
43.1
Step-by-step explanation:
