During the experiment, the volume dropped to milliliters. Find the percent of decrease.

Answers

Answer 1

The percentage of decrease for the chemistry experiment is 25%.

How to calculate the percentage?

The. percentage is defined as the number representing any number with respect to 100.

In this case, at the begining, the experiment was 4 millimeters and the end had an experiment of 3 millimeters.

The decrease in the percentage will be:

= Change in value /Original value × 100

= (4 - 3)/4 × 100

= 1/4 × 100

= 25%

The percentage is 25%.

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Related Questions

this question is about random samples from the \text{uniform}(0,1)uniform(0,1) distribution. recall that for a sample of size mm from a \text{uniform}(0,1)uniform(0,1) distribution, the expected value of the largest value in the sample is:

Answers

the expected value of the largest value in the sample is:

np​.​random​.​uniform​(​0,​1,​100)

this question is about random samples from the uniform(0,1) distribution.

recall that for a sample of size mm from a uniform(0,1) distribution

the expected value of the largest value in the sample is:

np​.​random​.​uniform​(​0,​1,​100)

import numpy as np

pass the random uniform generated array into x

x = np random uniform(low, high, size)

here low = 0, high = 1, size = 100

x = no. random uniform(0,1,100)

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HELPPPPPPPP
What is the slope of the line?

Answers

The slope of the line is 3.
The line is increasing so the answer is positive. If you count up and then over the number of spaces on the graph you will determine from (-2,0) to (-1,3) it goes up 3 spaces and over 1 space. This would be represented as 3/1 or 3.
Therefore, the answer is 3.

Answer:

3

Step-by-step explanation:

there are 12 zodiac signs. assume that each of the zodiac signs is equally likely. randomly pick 4 people from our class. what is the chance that none of the 4 people share your zodiac sign?

Answers

There is a 70.6% chance that none of the 4 randomly picked people share your zodiac sign.

Probability is a branch of mathematics in which we determine how likely an event is to happen. It is used when we are not sure about the result or outcome of an event so we consider the probabilities of certain outcomes.

In this case, there are 12 zodiac signs, out of which one is yours. So the probability or chance that the 4 randomly picked people do not share your zodiac sign can be determined as follows;

Probability of one person not having your zodiac sign: 11/12

Probability of 4 people not having your zodiac sign;

11/12 × 11/12 × 11/12 × 11/12 = 0.706

Converting it into percentage:

0.706 × 100 = 70.6%

Hence, the probability that none of the 4 people share your zodiac sign is calculated to be 70.6%.

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10x(-5)+(-6) squared

Answers

Answer:-50x+36

Step-by-step explanation:

Answer:

-50+36

Step-by-step explanation:

i hope that helps

Musa is on the top of cliff which is 300m. looking down at the table which is 600m from the cliff. If the angle of depression is 30 degree, construct the diagram to represent the information.​

Answers

The diagram for the angle of depression is constructed.

What is described as the angle of depression?

The angle of depression is defined as "an angle made between the horizontal line as well as the line of sight whenever a watcher looks directly down at an object." The term "angle of depression" refers to the following:

Observer (the individual who observes) Object (the object that is observed by the observer) Line horizontal (a horizontal line which starts from observer)Visible line of sight (the line which connects observer and object)

For the given question;

The height of the cliff is 300 m.

The distance of the table from the cliff is 600 m.

The angle of depression is 30 degrees.

Thus, the diagram for the angle of depression is made.

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Trigonometry, help!! ​

Answers

As per the tangent angle, the value of x in the given diagram is 7cm.

Tangent angle

The tangent of an angle is the ratio of the length of the opposite side to the length of the adjacent side.

Given:

Here we have the two right angled triangle, through this we have to identify the value of x.

According to the given question, we have a diagram with two right angled triangles.

Now, in the upper right angled triangle

tan 50° = opposite side / 5

⇒ 1.19 = 0pposite side/ 5

⇒ opposite side = 1.19 × 5

⇒ opposite side = 1.2 × 5

⇒ opposite side = 6cm

Now, the opposite side with respect to the angle 50  degrees in the upper right angle triangle is a adjacent side according to angle 38 degrees in the lower right angle triangle.

So, in the lower right angle triangle.

tan 38° = x / adjacent side

⇒ 0.78 =  x/6

⇒ x = 0.78 × 6

⇒ x = 4.68

⇒ x = 7cm

Hence, the value of x in the given diagram is 7cm.

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Use the distributive property to remove the parentheses?
(-4+6v+3y)(-9)

Answers

Answer:

−54v−27y+36

Step-by-step explanation:

hope this helped

have a good day ^^

How do division properties help you evaluate expressions?
Drag a word or number to the box to correctly complete the statement.

Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.

When the area of a fraction is equal to −1 and the numerator is nonzero, the value of the fraction is equal to the .

Options: numerator, opposite of the numerator, denominator, opposite of the denominator, 0

Answers

The complete statement is: 'When the denominator of a fraction is equal to -1, and the numerator is nonzero, the value of the fraction is equal to the opposite of the numerator of the fraction.'

In this question, we need to fill in the blanks for the statement 'When the _______  of a fraction is equal to -1, and the numerator is nonzero, the value of the fraction is equal to ______'

We know that, a fraction is represented as:

x/y

Where, x represents the numerator,

y represents the denominator

Assume that y = -1

Then the fraction becomes x/(-1) = -x

This means, if the numerator is nonzero, and the denominator is -1, then the fraction has a value opposite of the numerator

Therefore, the complete statement is: 'When the denominator of a fraction is equal to -1, and the numerator is nonzero, the value of the fraction is equal to the opposite of the numerator of the fraction.'

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PLEASE HELP!! It's easy i'm just Dum. Solve for x, look down below for more info.

Answers

By using the fact that the two angles are vertical angles, we will write and solve a linear equation to fine that the value of x is 20.

How to find the value of x?

Here we assume that both of the horizontal lines are parallel. Then the two marked angles (the ones that depend of x) are vertical angles.

This means that the measure of these angles is the same one, then we can write:

(5x - 8)° = (3x + 32)°

So we can solve that linear equation to find the value of x, we will get:

5x - 8 = 3x  + 32

Grouping like terms we get:

5x - 3x = 32+ 8

2x = 40

x = 40/2

x = 20

The value of x is 20.

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A computer base unit of mass 4.5 kg is dragged along a smooth desk. If the tension in each
arm of the person dragging it is 16 N and acts at 22° above the horizontal, then what is the
normal reaction force?

Answers

A computer base unit of mass 4.5 kg is dragged along smooth desk, if tension in each arm of the person dragging it is 16 N and acts at 22° above the horizontal, then what is the normal reaction force is 32.12N.

What is a force?

A force is effect that can alter an object's motion according to physics. A force can cause an object with mass to accelerate when it changes its velocity, for as when it moves away from the rest. An obvious way to describe force is as push or a pull. A force is vector quantity since it has both magnitude and direction. It is calculated by using newton SI unit (N). Force is denoted by letter F. (formerly P).

The net force acting on object is equal to the rate at which its momentum varies over time, according to Newton's second law in its original formulation. This law suggests that object's acceleration is directly proportional to the net force acting on it, is in the direction of the net force, and is inversely proportional to mass of the object if the object's mass is constant.

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Simplify the following expression completely.
(√10 - √9)²

Answers

An operation in mathematics is a function that converts 0–n parameters or operands into a definite output value. The complexity of the operation depends on how many operands there are. The expression is equal to -5.97.

What are mathematical operations?

An operation in mathematics is a function that converts 0–n parameters or operands into a definite output value. The complexity of the operation depends on how many operands there are.

The operations that are most frequently studied are binary operations (i.e., operations of arity 2), which include addition and multiplication, and unary operations (i.e., operations of arity 1), which include additive inverse and multiplicative inverse. A zero-arity operation, also known as the nullary operation, is a constant. An illustration of a ternary operation, also known as an operation of arity 3, is the mixed product.

Usually, it is considered that the arity is constrained. Even so, infinitary operations are occasionally considered, in which case the "normal" finite dimensionality operations are referred to as finiteary operations.

A partial operation is described as being similar to an operation but using a partial function in place of a function.

[tex](a-b)^{2} = a^{2}+b^{2}-2ab[/tex]

[tex](\sqrt{10} - \sqrt{9})^{2}[/tex])= [tex](\sqrt{10}) ^{2} + (\sqrt{9) } ^{2} - 2* \sqrt{10} * \sqrt{9}[/tex]

                    = 10+ 9- 18.97

                    =-5.97

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The ground temperature at Pearson Airport was 10 degrees Celsius. The temperature drops 5 degrees for every 1000 m above ground. What is the temperature outside an airplane that took off and climbed to 5000 m? Can someone please answer in a way that I'll understand?

Answers

The temperature outside an airplane that took off and climbed to 5000 m will be -15 degrees Celsius.

We will use Unitary method to solve the iven problem.

The ground temperature at Pearson Airport was 10 degrees Celsius.

The temperature drops 5 degrees for every 1000 m above ground. This can be written as,

5 degrees  Celsius      ---------------->   1000m

1m      ---------------->   (5/1000) degrees  Celsius

5000m      ---------------->   (5/1000)×5000 degrees  Celsius

5000m      ---------------->    25 degrees  Celsius

For 5000m above the ground, the drop in temperature will be 25 degrees  Celsius.

The temperature outside an airplane that took off and climbed to 5000 m will be = 10 - 25 = -15 degrees Celsius.

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42. Expanding Circle The radius of a circle is increased from 2.00 to 2.02 m. (a) Estimate the resulting change in area. (b) Estimate as a percentage of the circle's original area.​

Answers

The change in area is 0.8π [tex]m^{2}[/tex] and percentage is 20%.

What is change in area?

Let A denotes the area of the circle when its radius is r, then A=πr2 Now, the rate of change of the area with respect to its radius is given by, dA dr = d dr(πr2) = 2πr When r= 4cm,(dA dr)r=4= 2π(4) = 8π cm2 per cm Hence, the area of the circle is changing at the rate of 8πcm2/cm

Given,

initial radius = 2m

increased radius = 2.02 m

change in radius dr = 2.02 - 2 = 0.02m

Area = π[tex]r^{2}[/tex] = 4π

dA = 2πrdr

=2π(2)(0.02)

=0.08π [tex]m^{2}[/tex]

Estimated percentage = 0.08/4×100

=2%

Hence, the estimated percentage is 2%.

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A 21-screen movie complex contains three types of movie theaters. They offer traditional
viewing, 3D movie viewing, and luxury movie viewing. There are twice as many traditional
viewing theaters as the combined number of 3D and luxury theaters. The number of luxury
theaters exceeds the number of 3D theaters by 3. How many of each type of theater are in the
movie complex?

Answers

The number of traditional viewing theater is 14 , number of 3D movie viewing theaters is 2 , and number of luxury movie viewing theater is 5 .

In the question ,

it is given that

The 21-screen movie complex has  three types of movie theaters,

let the number of traditional movie viewing theater be  "a" ,

let the number of 3D movie viewing theater be  "b" ,

let the number of luxury movie viewing theater be  "c" ,

So , a+b+c=21      ...(i)

given that ,

Traditional viewing theaters are twice of the combined number of 3D and luxury theaters ,

So the equation is

a=2(b+c)         ...(ii)

also , the number of luxury theaters exceeds the number of 3D theaters by 3 ,

So , the equation is

c=b+3     ....(iii)

Substituting value of c from (iii) in (ii) and (i) we get ,

a-4b=6 and a+2b=18

Solving , we get a=14 and b=2 .

Substituting a=14 and b=2 in (iii) , we get

c=5 ,

So , a =14 , b=2 and c=5

Therefore , the number of traditional viewing theater is 14 , number of 3D movie viewing theaters is 2 , and number of luxury movie viewing theater is 5.

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84. the centers for disease control and prevention reported in 2012 that 1 in 88 american children had been diagnosed with an autism spectrum disorder (asd). a. if a random sample of 200 american children is selected, what are the expected value and standard deviation of the number who have been diagnosed with asd?

Answers

a) The expected value is calculated to be 2.273 and b) the standard deviation is 1.499 if a random sample of 200 children is selected.

According to the report 1 in 88 American children has been diagnosed with ASD, therefore the probability can be given as;

p = 1 / 88

a) the expected value can be calculated as follows;

E (X) = n × p

here n = sample size = 200

p = probability = 1 / 88

E (X) = 200 × 1 / 88

E (X) = 2.273

b) To find the standard deviation, first, we have to determine the variance of the random variable;

V (X) = n × q × p

V (X) = 200 × 87/88 × 1/88

V (X) = 2.2468 = 2.247

Now we can calculate the standard deviation as follows;

standard deviation = √V(X)

standard deviation = √2.247

standard deviation = 1.499

Therefore, the expected value and standard deviation are calculated to be 2.273 and 1.499 respectively.

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What is the value of x?
(2x - 5)°
n
l
m 45°

Answers

Answer: x = 70

Step-by-step explanation: the sum of the angle 2x-5  and 45 deg should equal 180 deg, so 2x-5 should be equal to 135 because 180 - 45 = 135

So 2x -5 = 135. Add 5 to both sides to cancel it out. 2x = 140. divide both sides by 2 to cancel 2 on x. Answer is X=70

I think this is how you do it lol but I don't know for sure.

Subtract the expressions.

(4.97n − 3.6) − (3 + 15.6n)

−10.63n − 6.6
−106.30n − 0.6
8.57n − 18.6
20.57n + (−6.6)

Answers

The value of subtracting the expressions (4.97n − 3.6) − (3 + 15.6n) is -10.63n − 6.6

What are expressions?

Expressions are mathematical statements that are represented by variables, coefficients and operators

How to subtract the expression?

The expression is given as

(4.97n − 3.6) − (3 + 15.6n)

Start by opening the brackets

So, we have

(4.97n − 3.6) − (3 + 15.6n) = 4.97n − 3.6 − 3 - 15.6n

Next, we collect the like terms

So, we have

(4.97n − 3.6) − (3 + 15.6n) = 4.97n  - 15.6n − 3.6 − 3

Next, we evaluate the like terms

So, we have

(4.97n − 3.6) − (3 + 15.6n) = -10.63n − 6.6

Hence, the value of the expression is -10.63n − 6.6

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The Grand Answer is....

A!

I got the exam right...

Can I get brainliest?

what is the remainder when 5^400 is divided by 19

Answers

The remainder when [tex]5^{400}[/tex] is divided by 19, the remainder is 17.

Remainder

The Remainder is the value left after the division. If a number (dividend) is not completely divisible by another number (divisor) then we are left with a value once the division is done. This value is called the remainder.

We can write,

[tex]5^{400} = (5^4)^{100} = 625^{100}[/tex]

We know that,

19*33 = 627

Hence, we can write 625 as 627 - 2

It will become,

[tex]\frac{(627-2)^{100}}{19}=\frac{(-2)^{100}}{19}[/tex]

We know that, even power of any number and its negative counterpart will be same.

Hence, we can write,

[tex]\frac{(-2)^{100}}{19}=\frac{(2)^{100}}{19} = \frac{2*2^{99}}{19}[/tex]

We know that 99 = 11*9

Hence, we can write,

[tex]\frac{2*({2^9})^{11}}{19} =\frac{2*512^{11}}{19}[/tex]

We know that,

19*27 = 513

Hence, we can write, 512 as 513 - 1

[tex]\frac{2*(513-1)^{11}}{19}=\frac{2(-1)^{11}}{19}[/tex]

2*(-1)/19 = -2/19

It means the remainder will be 19 - 2 = 17.

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Pls help me finish my maths homework

Answers

Answer:

answer is 4

because y is directly proportional to x2

Answer:

y is directly proportional to x

y=kx^2

20=2^2k

20=4k

k=5

y=6k

y=6(5)

y=30

Plssmark as brainliest

please help meeeeeeeee!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

b. power of a quotient law

The midpoint of AB is M(3, 1). If the coordinates of A are (4, 3), what are the
coordinates
of B

Answers

b= (2,-1);

(3,1) - left 1, down 2

7/10 + 2/5 + 3/4
Please help-

Answers

Answer: 37/20 1 17/20

Step-by-step explanation:

Hope this helps

Answer:

93/20

Step-by-step explanation:

7/10 + 2/5 + 3/4

= (70+8+15)/20 [.°. L. C. M. of 10, 5 , 4 ]

=93/20

The function f(x) = |x+3| is transformed by the following transformations to a new function g(x):

A translation 2 units down.

A translation 1 unit to the right.

Reflection across the x-axis.

What is the equation of the new function g(x)?

Answers

The equation of the new function g(x) is g(x) = 2 - |x+2|

Transformation of function

Transformation is. way of changing the position of an object on an xy-plane.

Given the parent function  f(x) = |x+3|.

If the function is translated 2 units down and 1 unit right, then the resulting function will be |x+3 - 1| - 2 which is equivalent to  |x+2| - 2

The reflection of the resulting function across the x-axis is given as:

g(x) = -(|x+2|-2)

g(x) = 2 - |x+2|

Hence the new function g(x) if the parent function undergo the transformation is g(x) = 2 - |x+2|

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find the value of 36 to the power of 5/2

Answers

Answer:

7776

Step-by-step explanation:

you divide 5 by 2 to get 2.5 then put 36 to the power of 2.5 to get 7,776

Solve the equation for y. Then find the value of y for each value of x. 3x - 5y = 19; x = -1, 0, 1
please help me​

Answers

Answer: y = -4.4

              y = -3.8

              y = -3.2

Step-by-step explanation:

The question is in the photo, I thought they were all wrong, so I am super confused. Whoever proves me wrong gets 15 points.

Please make sure you know what you are doing before you answer.

Answers

If the steps are shaped like rectangular prism, then the expression that can be used to find the volume is option (B)  (6×16×6)+(14×16×7)

The steps are shaped like rectangular prism

The length of the rectangular prism = l×w×h

Where l is the length

w is the width

h is the height

First we have to separate the given steps in to two rectangular prism and find the volume of each prism

The volume of the top prism = l×w×h

= 6×16×6 cubic inches

The volume of the bottom prism = l×w×h

= 14×16×7 cubic inches

The total volume = (6×16×6)+(14×16×7) cubic inches

Hence, if the steps are shaped like rectangular prism, then the expression that can be used to find the volume is option (B)  (6×16×6)+(14×16×7)

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In the number 2,222.222, what is the difference between the 2 in the tens place and the 2 in the column to its left? a. the 2 in the tens place represents of what the 2 to its left represents. b. the 2 in the tens place represents of what the 2 to its left represents. c. the 2 in the tens place represents 100 times what the 2 to its left represents. d. the 2 in the tens place represents 10 times what the 2 to its left represents.

Answers

This questions is testing the knowledge on place value and total value.

The two to the left of the 2 in the tens place is 100 times larger than the 2 in the 100ths place in the value.

The total value of the 2 in the tens position is 20.

The total value of the 2 in the tenth position is 0.2.

To obtain the difference, divide the 20 in the tens position to the 2 in the tenths position.

20/0.2 = 100

the 2 in the tens place represents 100 times what the 2 to its left represents.

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Question 11 of 20
A rectangular school gym has a length of x + 19 and a width of x- 15. Which
measure does (x+19)(x - 15) represent?
OA. The volume of the gym
OB. The perimeter of the gym
OC. The height of the gym
OD. The area of the gym
SUBMIT

Answers

Here is your answer. Hope it helps

work out the vaule of 2^0

Answers

Answer:

Any number raised to 0 is equal to 1

hence: 2^0 = 1

josh wrote 483 out of an expected 500 words for his essay. How would this ratio be expressed in decimal form?

Answers

0.966

See explanation:
Other Questions
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