The number 21 is decreased to 15. What is the percentage by which the number was decreased, to the nearest tenth of a percent?

Answers

Answer 1

Answer:

Initial Number = x = 21

Number after it is decreased = y = 15

Total decrease form initial to the current number = z = x-y = 21-15 = 6

% of decrease = (z/x) * 100 = (6/21)*100 = 600/21 = 28.5714286 = 28.6 ( correcting it to 10th place)

Step-by-step explanation:

Answer 2

For 21 decreased to 15, the percentage decrease is 28.6%.

The percentage by which a number was decreased can be calculated by finding the difference between the original number and the decreased number, dividing that by the original number, and then multiplying by 100 to get the percentage.

Given number: 21

On reduction, number becomes: 15

To find the percentage decrease:

(21-15)/21 x 100 = 28.6%.


Related Questions

How are the graphs of the functions f(x) = StartRoot 16 EndRoot Superscript x and g(x) = RootIndex 3 StartRoot 64 EndRoot Superscript xrelated? The functions f(x) and g(x) are equivalent. The function g(x) increases at a faster rate. The function g(x) has a greater initial value. The function g(x) decreases at a faster rate.

Answers

Final answer:

The functions f(x) = √16^x and g(x) = ∛64^x increase at the same rate as x increases.

Explanation:

The functions f(x) = √16ˣ and g(x) = ∛64ˣ are related in the way they grow or decrease as x increases. Let's analyze each function:

For the function f(x) = √16ˣ, as x increases, the value of f(x) also increases. This is because when x increases, 16^x becomes larger, and taking the square root of a larger number results in a larger value for f(x).

For the function g(x) = ∛64ˣ, the same logic applies. As x increases, the value of g(x) also increases. This is because when x increases, 64ˣ becomes larger, and taking the cube root of a larger number results in a larger value for g(x).

Therefore, both functions f(x) and g(x) increase at the same rate as x increases. None of the given options accurately describe the relationship between the graphs of f(x) and g(x).

Learn more about Functions here:

https://brainly.com/question/30721594

#SPJ3

Answer:

A.

Step-by-step explanation:

How much is square root of 5

Answers

Answer:

2.2360679775 or simply put 2.2

Step-by-step explanation:

The square root of 5 will not be a perfect square.

The square root of five is 2.2 rounded to the tenths place :) you can even approximate square roots also... but I’m not doing that

Write an equation in slope intercept form for each line that passes through (-7, -4), perpendicular to y=1/2x +9

Answers

Answer:

y = -2x - 18

Step-by-step explanation:

-4 = -2[-7] + b

14

-18 = b

y = -2x - 18

rate of change [slope]

* Perpendicular Lines have OPPOSITE MULTIPLICATIVE INVERSE RATE OF CHANGES [SLOPES]:

½ → -2

I am joyous to assist you anytime.

Subtract the following:
–7 – 7=
7 –
7=
-7-(- 7) =
7- (-7)=

Answers

Answer:

A. -7 - 7 = -14

B. 7 - 7 = 0

C. -7 - (-7) = 0

D. 7 - (-7) = 14

Answer:

-7 - 7 = -14  ; Two negatives equal a positive

7 - 7 = 0  ;

-7 - (-7) = 0

7 - (-7) = 14 two negatives equal a positive

Rate as Brainliest

find the slope of a line given two or more points (2,4)(5,3)

Answers

Answer:

-1/3 (can u plz give me the brainliest answer???)

Step-by-step explanation:

change in y over the change in x. (or rise over run).

-1/3

Have a nice day!!!!!!!!!!!

KA

Answer:

-1/3

Step-by-step explanation:

You would use rise over run:

4-3/2-5

That equals -1/3.

The length of a rectangular poster is 10 inches longer than the width. If the perimeter of the poster is 124 inches, what is the width?
Question 2 options:

Answers

Final answer:

To find the width of a rectangular poster with a perimeter of 124 inches and a length that is 10 inches longer than the width, set up the perimeter equation, solve for the width, and find that the width is 26 inches.

Explanation:

The student asks to find the width of a rectangular poster where the length is 10 inches longer than the width, and the perimeter is 124 inches.

Firstly, let's denote the width of the poster as w inches. Therefore, the length is w + 10 inches. The formula for the perimeter of a rectangle is P = 2l + 2w, where P is the perimeter, l is the length, and w is the width.

We can set up the equation for the given perimeter:

2(w + 10) + 2w = 124

Simplifying the equation:

2w + 20 + 2w = 124

4w + 20 = 124

4w = 104

w = 26

The width of the poster is 26 inches.

iris charges $50 for her consulting services plus $60 for each hour she works. on one job, iris charged $470. for how many hours did iris work on this job​

Answers

Answer:

the answer is 7 hope I could

Answer: 7 hours.

Step-by-step explanation:

Take the original amount (470) and subtract the $50 consulting fee. then divide the remaining amount by 60, as that is what she charges per hour. See the work done here:

470 - 50 = 420

420/60 = 7

According to the American Association of Retired Persons, AARP, without healthcare
reform, the number of people in the United States without healthcare insurance would
have reached 60 million in 2020. This represents a 18.5% increase from 2010. How many
people were uninsured in 2010? Round to the nearest million.

Answers

Answer:

49 million if I'm not mistaken.

Step-by-step explanation:

Simplify this equation

Answers

Answer:

-10 * 3/2= -30/2 = -15 is the solution

Answer:

-15

Step-by-step explanation:

-10/ 2/3

-10/1 / 2/3

-10/1 x 3/2

-30/2

=-15

Is riding an elevator down 3 floors positive or negative

Answers

Answer:

negative

Step-by-step explanation:

that would be a negative corrolation

negative correlation

4 less than 20 times some number

Answers

Answer:

20x - 4

Step-by-step explanation:

4 less than 20 times some number

Let's break it up.

4 less than = -4

20 times some number = 20x (x is representing "some number")

So, let's put that together.

4 less than 20 times some number

20x - 4

what is the value of 4P -2 when P= 8​

Answers

4p-2

Replace the P with the 8

4(8)-2

4*8=32

32-2=30

your answer would be 30 cause 4 times 8 is 32 then 32 - 2 = 30

1. -88 = -3(4m + 5) - (1 - 3m)​

Answers

Answer:

m=8

Step-by-step explanation:

-88=-3(4m+5)-(1-3m)

-88=-12m-15-(1-3m)   <- Distributive Property

-88=-12m-15-1+3m  <- Open () if there is a negative negative the symbol equals positive

-88=-9m-16    <- Simplify

0=-9m+72   <- Add 88 to both sides

9m = 72 <- Add 9m to both sides

9m = 72

/9      /9

m=8

Find the midpoint of the segment with the given endpoints.
(6. - 4) and (4.6)​

Answers

Answer:

Step-by-step explanation:

What if the teacher divides the the 5 cups of broth among 6 students? Will each student get more than less than 1 cup of broth?

Answers

Answer:

Less

Step-by-step explanation:

5 divided by 6 is less than 1.

Answer: 0.83...

Answer:

Each student get less than 1 cup of broth.

Step-by-step explanation:

We have been given that a  teacher divides the 5 cups of broth among 6 students. We are asked to determine the amount that each student will get would be more than or less than 1 cup of broth.

Since there are 5 cups of broth, so we can distribute them to 5 students each having one cup of broth.

As the teacher divides the 5 cups of broth among 6 students, therefore each student will get less than one cup that is [tex]\frac{5}{6}[/tex] of cup.

Solve the rational equation:
3x/x+1 + 2x/x-2 = 4x^-4/x^-x-2

Answers

Answer:

no solution

Step-by-step explanation:

[tex]\dfrac{3x}{x+1}+\dfrac{2x}{x-2}=\dfrac{4x^2-4}{x^2-x-2}\\\\Domain:\\\\x+1\neq0\ \wedge\ x-2\neq0\ \wedge\ x^2-x-2\neq0\\\\(1)\ x+1\neq0\qquad\text{subtract 1 from both sides}\\x\neq-1\\\\(2)\ x-2\neq0\qquad\text{add 2 to both sides}\\x\neq2\\\\(3)\ x^2-x-2\neq0\\x^2+x-2x-2\neq0\\x(x+1)-2(x+1)\neq0\\(x+1)(x-2)\neq0\to\ x+1\neq0\ \wedge\ x-2\neq0\\\\\bold{DOMAIN:}\ x\in\mathbb{R}-\{-1,\ 2\}[/tex]

[tex]\dfrac{3x}{x+1}+\dfrac{2x}{x-2}=\dfrac{4x^2-4}{x^2-x-2}\\\\\dfrac{(3x)(x-2)}{(x+1)(x-2)}+\dfrac{(2x)(x+1)}{(x+1)(x-2)}=\dfrac{4x^2-4}{(x+1)(x-2)}\\\\\dfrac{(3x)(x-2)+(2x)(x+1)}{(x+1)(x-2)}=\dfrac{4x^2-4}{(x+1)(x-2)}\\\\\text{therefore}\\\\(3x)(x-2)+(2x)(x+1)=4x^2-4\qquad\text{use the distributive property}\\\\(3x)(x)+(3x)(-2)+(2x)(x)+(2x)(1)=4x^2-4\\\\3x^2-6x+2x^2+2x=4x^2-4\qquad\text{combine like terms}\\\\(3x^2+2x^2)+(-6x+2x)=4x^2-4[/tex]

[tex]5x^2-4x=4x^2-4\qquad\text{subtract}\ 4x^2\ \text{from both sides}\\\\x^2-4x=-4\qquad\text{add 4 to both sides}\\\\x^2-4x+4=0\\\\x^2-2x-2x+4=0\\\\x(x-2)-2(x-2)=0\\\\(x-2)(x-2)=0\\\\(x-2)^2=0\iff x-2=0\qquad\text{add 2 to both sides}\\\\x=2\notin\bold{D}[/tex]

(6x^3 - 4) + (-2x^3 + 9)

Answers

Answer:

4x^3 + 5

Step-by-step explanation:

(6x^3 - 4) + (-2x^3 + 9)

You can get rid of the parentheses

6x^3 - 4 + -2x^3 + 9

Combine like terms

6x^3 + -2x^3 = 4x^3

-4 + 9 = 5

4x^3 + 5

A bag contains 22 1/2 cups .A recipe for pancakes uses 1 1/4 cups of flour .how many batches of pancakes can be made with one bag of flour

Answers

Answer:

18 batches of pancakes

Step-by-step explanation:

22.5/1.25=18

Answer:

17 batches

Step-by-step explanation:

Divide (1 1/4 cup per batch) into 22 1/2 cups:

  22 1/5 cups

---------------------- = 22.2/1.25 batches = 17.76 batches

   1 1/4 cup

   --------------

     1 batch

One bag of flour will make 17 batches with about 3/4 batch unfinished.

The winner of a weight-lifting competition bench-pressed 400 pounds. All other competitors bench-pressed at least 23 pounds less. Write an inequality that represents the weights x (in pounds) that the other competitors bench-pressed.

Answers

Answer:

[tex]x\le 400-23\\ \\x\le 377\ pounds[/tex]

Step-by-step explanation:

The winner of a weight-lifting competition bench-pressed weight 400 pounds.

All other competitors bench-pressed at least 23 pounds less. So, the maximum weight that all other competitors bench-pressed is

[tex]400-23=977\ pounds[/tex]

If x pounds is the weight that the other competitors bench-pressed, then

[tex]x\le 400-23\\ \\x\le 377\ pounds[/tex]

that sounds as the other competitors bench-pressed at most 377 pounds weight.

What’s the answer to this problem?

Answers

Answer:

[tex]6 = f(4) \\ \\ 0 = f(-2)[/tex]

Step-by-step explanation:

Think of f(x). Those numbers in parentheses next to the f are x-coordinates, all you have to do is look in the chart and see what y-coordinate they gave you with respect to the given x-coordinates.

I am joyous to assist you anytime.

Practice solving multistep equations.
ASSIGNMENT
Solve 3[-x + (2x + 1)] = x - 1.
DONE

Answers

Answer:

2(x+2)

Step-by-step explanation:

3[-x+(2x+1)]=x-1

3[-x+2x+1]=x-1

3[x+1]=x-1

3x+3=x-1

3x-x+3+1

2x+4

2(x+2)

Which sequence of transformations performed on triangle J could result in similar triangle J'?
A. Rotate triangle J 180 about the origin, then reflect across y-axis.
B. Translate triangle J to the right and then down.
C. Reflect triangle J across the y-axis, then across the x-axis.
D. Reflect triangle J across the x-axis, then across the y-axis.



(its not A.)

Answers

Answer:

C.  Reflect triangle J across the y-axis, then across the x-axis.

Answer:

I think the answer is B but i might be wrong

Is it proportional and what’s the solution?

Answers

Yes, it is proportional.
The constant would be 12.
The equation is: 12p=b

the ratio of 6 to 4 is equal to the ratio of 36 to what number​

Answers

Answer:24

Step-by-step explanation:

Final answer:

The ratio of 6 to 4 is the same as the ratio of 36 to 24. This is found by setting up the ratios as fractions, setting them equal to each other, and then solving for the unknown.

Explanation:

The question is asking for an equivalent ratio to that of 6 to 4, using 36 as the first term. To do this, you need to determine what number 36 is in the same ratio. A ratio is a relationship between two numbers indicating how many times the first number contains the second. In our case, 6 is to 4 as 36 is to what?

To find the answer, you can set up the ratios as fractions and solve for the unknown. For example, the ratio of 6 to 4 is expressed as 6/4. Because we want a ratio that's equivalent, we say 6/4 = 36/x, where x is the unknown number, we need to find.

Solving for x involves arranging the equation to isolate x and then performing the algebraic operation that gives the value of x. This would be: 6/4 = 36/x -> 6x = 36×4 -> 6x = 144 -> x = 144/6 -> x = 24.

Therefore, the ratio of 6 to 4 is equal to the ratio of 36 to 24 in math.

Learn more about Ratios here:

https://brainly.com/question/32531170

#SPJ3

Multiply.
(x - 7)(x - 10)
A) 2x + 70
B) x2 + 70
C) x2 - 70
D) x2 - 17x + 70

Answers

The answer is D. The easiest way to see this is by using the FOIL method.
First
Outside
Inside
Last. So the first is x2, the outside is -10x, the inside is -7x, and the last is 70. So it would be x2-17x+70

The cost (c) to hire a dog trainer is varies directly with the amount of time (h) in hours spent training the dog.
Part A

Write an equation to represent the proportional relationship between c and h using the information given. c =

Part B Sue spent $660 on 12 hours of obedience training for her dog Muffin. Jon wants to use the same dog trainer for his dog Tex, but he only has $440 to spend. How many hours of training can he get for Tex? Explain your reasoning.

Answers

Answer:

Part A) The proportional equation is [tex]c=55h[/tex]

Part B) 8 hours of training

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form [tex]y/x=k[/tex] or [tex]y=kx[/tex]

Let

c -----> the cost to hire a dog

h ----> the amount of time in hours

The linear equation is equal to

[tex]c=kh[/tex]

Sue spent $660 on 12 hours of obedience training for her dog Muffin

Find the value of k (constant of proportionality)

[tex]k=y/x[/tex]

substitute the values

[tex]k=660/12=55[/tex]

therefore

The linear equation is

[tex]c=55h[/tex]

For [tex]c=\$440[/tex]

Find the value of h

substitute in the equation and solve for h

[tex]440=55h[/tex]

[tex]h=440/55=8\ hours[/tex]

(PLEASE HELP ME) !!! (picture is shown!) Plane W and Plane J intersect at which of the following?

Answers

Answer:

it looks like it intersects at line t.

Step-by-step explanation:

I mean, just look at the picture. where does plane W and plane J touch? its not line p because that line is intersecting plane W and plane B, its not line a because that's intersecting planes V and J, and then its not B because they obviously do intersect.

I hope this helps you out and have a wonderful day!

Find the dr/d(theta) for:
r = (theta)sin(theta) + cos(theta)​

Answers

[tex]r=\theta\sin\theta+\cos\theta[/tex]

[tex]\dfrac{\mathrm dr}{\mathrm d\theta}=\dfrac{\mathrm d(\theta\sin\theta)}{\mathrm d\theta}+\dfrac{\mathrm d(\cos\theta)}{\mathrm d\theta}[/tex]

By the product rule,

[tex]\dfrac{\mathrm d(\theta\sin\theta)}{\mathrm d\theta}=\dfrac{\mathrm d(\theta)}{\mathrm d\theta}\sin\theta+\theta\dfrac{\mathrm d(\sin\theta)}{\mathrm d\theta}=\sin\theta+\theta\cos\theta[/tex]

and

[tex]\dfrac{\mathrm d(\cos\theta)}{\mathrm d\theta}=-\sin\theta[/tex]

So we have

[tex]\dfrac{\mathrm dr}{\mathrm d\theta}=\sin\theta+\theta\cos\theta-\sin\theta[/tex]

[tex]\implies\dfrac{\mathrm dr}{\mathrm d\theta}=\theta\cos\theta[/tex]

Solve this problem

C= 4y/m+n for y

Answers

Answer:

y = (Cm)/4 + (Cn)/4

Answer:

Step-by-step explanation:

C= 4y/m+n

4y = c(m+n)

y =  c(m+n)/4

square root of
negative 144

Answers

12i is the correct answer

have a fantastic day

Answer:

It is undefined or not a real number.

Step-by-step explanation:

There is no negative square root.

square root is a number multiplied by itself twice.

If you multiply a positive number by itself twice, you will get a positive number.

If you multiply a negative number by itself twice, you will get a positive number.

Therefore this is undefined or not a real number.

Rate as brainliest plz

Other Questions
George was in an automobile accident several years ago in which he suffered severe head injuries. Since the mishap, he has been unable to form new memories. He can remember everything he did before the accident but he cannot remember what he just said five minutes ago. The part of Georges brain that was injured was probably the __________ Demarcus and Fabian live 23 miles apart and play soccer at a park between their homes Demarcus rode his bike for 3/4 of an hour and Fabian rode his bike for 1/2 of an hour to get to the park Fabian speed of 60 mph faster than the demarcus's speed find the speed of the soccer players When can a trapezoid also be called a parallelogram? Suppose that you are swimming in a river while a friend watches from the shore. In calm water, you swim at a speed of 1.25 m/s . The river has a current that runs at a speed of 1.00 m/s.Note that speed is the magnitude of the velocity vector. The velocity vector tells you both how fast something is moving and in which direction it is moving.Part AIf you are swimming upstream (i.e., against the current), at what speed does your friend on the shore see you moving?Express your answer in meters per second. What are the steps to solve this inequality? The principle of comparative advantage indicates that trade is a zero-sum activity. a nation can gain by specializing in the production of the goods it can produce at a low opportunity cost and trade for goods it can produce only at a high cost. comparative advantage applies to nations and not individuals. What is Legalism?I need help on my history Which of the following would be valid reason to build the power plant?Question 14 options:a) Geothermal energy is generally abundant and reliable at favorable sitesb) The water is self replenishing.c) Little disruption to the environmentd) All of the above The pattern by which our lives be measured is What is the initial value of the exponential function represented by the table? A.1/8 B.1/4 C.1/2 D.1 The vertical velocity of a projectile launch at 35 degree : O continuously decreases O continuously increases O sometimes decreases and sometimes increases O is zero O stays constant. Ratios 24 dollars for 9 books how much is worth one book use mathematical induction to prove that the formula1^3+3^3+5^3+......(2n-1)^3=n^2(2n^2-1) is true for all natural n.(b) show tha n^3-n+3 is divisible by 3 for all natural numbers n.(c) usw mathematical induction to prove that (n-1)^23 Find the average:-1,5, 4, 5, 1, -4 A scientific hypothesis starts with the lowest level of acceptance but can become stronger as they are used and survive repeated testing.1)True2)False Court decisions affect the Constitution because the courts _____. What is the advantage of using the conditional operator? Capacity to Attract Talent is defined as "A country's capacity to attract talented people from abroad (1 = not at all; 7 = attracts the best and brightest from around the world)". This variable touches on the globalization of labor in our increasingly integrated world. Order the countries below from the strongest ability to attract talent to the weakest.a. United Statesb. Chinac. Ghanad. Mexicoe. South Africaf. Greece PLS HELP Which answer choice is a sentence fragment?Two sleeping bags, a tent, and the cooler.I spotted a hawk's nest in a tree.We camped out under the stars.In the morning, we hiked the trail to the falls. Plant molecular biologists have recently discovered genes that are responsible for controlling cell division in tomatoes. Why would such a discovery be important to producers of other kinds of fruits and vegetables ?