Mathematics Middle School

Find each percent of change. Round to the nearest percent if necessary. State whether the percent of change is an increase or a decrease.
1. 30 inches to 24 inches

2. $126 to $150

Answers

Answer 1
1. 20% decrease

2. 16% increase

Explaination:

Question 1.

30 inches to 24 inches is a decrease, because 24 is smaller than 30.

(30-24)/30 * 100%

= 6/30 * 100%

= 20%

Ans: 20% decrease


Question 2.

$126 to $150 is an increase, because 150 is larger than 126.

(150-126)/150 * 100%

= 24/150 * 100%

= 4/25 * 100%

= 16%

Ans: 16% increase
Answer 2

Answer:

16%⬆

Step-by-step explanation:

Related Questions

What is the slope?
Simplify your answer and write it as a proper fraction, improper fraction, or integer.

Answers

Answer:m = \frac{\text{rise}}{\text{run}} = \frac{y_2 - y_1}{x_2 - x_1}

Step-by-step explanation:Mathematically, slope is calculated as "rise over run" (change in y divided by change in x).  

(hope this helps)

20 by 100 because it’s showing the long way

Deb earned a total of $20 by selling 10 cups of lemonade. After selling a total of 14 cups of lemonade, how much money will Deb have made in all? Assume the relationship is directly proportional.

Answers

Deb would have made $18 from selling 14 cups of lemonade. She earned $20 for selling 10 which is $2 per cup. Add $2 dollars for 4 more cups which makes $18
Deb earned 20 dollars from 10 cups of lemonade so 2$ per cup
She sells 4 more so 8 more dollars.
20+8=28
Deb made 28$ in all

A long-distance telephone company charges $4.95 per month and $0.07 per minute for phone calls.

What is the independent variable quantity in this situation?

Answers

Y = $0.07x+$4.95

Also, is that an umbrella academy pfp?

Mai and Priya were on scooters. Mai traveled 15 meters in 6 seconds. Priya traveled 22 meters in 10 seconds. Who was moving faster? ( IT NOT B)

A Neither; they were traveling at the same rate of speed.

B Priya

C Mai

Answers

mai, she was going about 12 while priya goes 11

Kyle held a balloon 8 feet off the ground, straight above his head. Ava is standing 15 feet directly to the right of Kyle.Which equation can be used to find the value of x?

Answers

Answer:

Step-by-step explanation:

to get from (1, 7) to (2, 5) you move down two and to the right one

so from (2, 5) go down two and to the right one and you are at (3, 3)

The value of x is 17 unit.

What is Pythagoras theorem?

The Pythagorean theorem, or Pythagorean theorem, illustrates the relationship between the three sides of a right-angled triangle. The square of the hypotenuse is equal to the sum of the squares of the other two sides of a triangle, according to the Pythagorean theorem.

We know,

Kyle held a balloon 8 feet off the ground.

Ava is standing 15 feet directly to the right of Kyle.

So, height = 8 ft and distance = 15 ft

Using Pythagoras theorem

x² = 8² + 15²

x² = 64+ 225

x = 17 unit

Thus, the value of x is 17 unit.

Learn more about Pythagoras theorem here:

https://brainly.com/question/343682

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SOLVE FOR x IN THE DIAGRAM BELOW

Answers

3x+2x+80=180
5x+80=180
5x=100
ANSWER IS x=20

So to check if the answer is correct:
Angle 3x is 3x20 = 60 degrees
Angle 2x is 2x20= 40degreee

60+40+80= 180 degrees
Well, the base of it is a 180° angle and the middle angle is 80°. That leaves 3x and 2x.

3 x 20 = 60
2 x 20 = 40
60 + 40 = 100
100 + 80 = 180
180°

I am probably wrong but have a good day :)

The amount of Salt, in grams, in a solution is proportional to the volume , in liters, of the solution as shown on the graph.

What is the unit rate in grams per liter?

Answers

Answer:

2 grams per liter

Step-by-step explanation:

2.5 per little I think

Reflect quadrilateral SQRT over the y-axis. Then translate the new quadrilateral 3 units to the right. What are the coordinates of the vertices of the final image?


A. S’(-2, 3), Q’(1, 2), R’(-3, -2), T’(-3, 1)
B. S’ (0, 1), Q’(1, -5), R’(7, -4), T’(6, -1)
C. S’(8, 3), Q’(5, 2), R’(6, -2), T’(9, -1)
D. S’(5, 3), Q’(2, 2), R’(3, -2), T’(9, -1)

Answers

Answer: S(-5;3) Q(-2;2) R(-3;-2) T(-6;-1)

When reflected over the y-axis, their x values will change sign

S(5;3) Q(2;2) R(3;-2) T(6;-1)

Translate 3 units to the right, their x values will increase by 3

S(8;3) Q(5;2) R(6;-2) T(9;-1)

Step-by-step explanation:

The answer is what my friend say

OMG PLEASE HELP ME WITH MATH!

4d-1+105=180

Answers

Answer:

I think it's "d=19"

D would equal 19. First, you combine like terms, so add -1 and 105 together to get 104. Then you have to subtract 104 from both sides. After that you get 76 on the right side. Then you would have to divide 4 from both sides to get d by itself. Lastly, 76 divided by 4 is 19.

Find the difference. Write your answer in simplest form.

4 7/9 - 2 2/3

2 1/9
2 5/6
2 5/9
1 1/9

Answers

Answer:

19/9 = 2 1/9

Step-by-step explanation:

2 1/9. 4-2=2 7/9-6/9=1/9

Can someone help me with this

Answers

Answer:

i wanna say C

im not sure

The temperature was -2 degrees and ended the day at 18 degrees. Which equation represents the solution for the change in temperature?

1. -2 + 18 = 16
2. -2 - 18 = -20
3. 2 - 18 = -16
4. 2 + 18 = 20

Answers

Answer:

1

Step-by-step explanation:

-2+8=16

Answer:

1 and I just answered ur other question

Yvonne is researching the effect of education on annual income. A summary of her research is shown in the table.
Effect of Education on Annual Income
Level of Education Annual Income (dollars)
High school diploma 33,904
Associate’s degree 40,820
Bachelor’s degree 55,432

Based on the data in the table, how much more does a person with an associate’s degree earn than a person with only a high school diploma over 10 years?
$6,916
$74,724
$747,240
$69,160

Answers

D, $69,160

Take Assoc. Degree pay, subtract high school pay. 40,820-33,904 = 6,916. Multiply by 10 years = $69,160
I’m guessing the last one, $69,160.

Select the correct location on the number line.
Which point on the number line represents the approximate volume of a cylinder with a radius of 4 units and a height of 4 units? Use 3,14 for 11
50
100
150
200
250

Answers

Answer:

the answer should be 200!

Step-by-step explanation:

hope this helps

200 my sister needed help and the answer was 200

Help me please anybody

Answers

Answer:

C

Step-by-step explanation:

The correct answer is c

Paula walked ¾ mile in 10 minutes. Hannah walked ⅘ mile in 15 minutes. What was the difference in their speeds, in miles per hour?

Answers

Answer:

1 3/10 (SORRY IF ThIS IS WRONG)

Step-by-step explanation:

3/4 mile x 6 = 4 1/2

(we multiply by 6 because to get 60 minutes/1 hour you need to multiply 10 minutes by 6)

60/15=4

(we will multiply by 4 because we need that to get 1 hour)

4/5 x 4 = 3 1/5

4 1/2 - 3 1/5 = 4 5/10 - 3 2/10 (we do that so we can subtract easier)

4 5/10 - 3 2/10 = 1 3/10

whats -1.8 as a fraction?

Answers

Answer:

-18/10

Step-by-step explanation:

Please mark me BRAINLIEST

Answer:

-1.8 = –9/5 = –1 4/5

Step-by-step explanation:

What is the missing number?
9/21 ?/105

A. 5
B. 45
C. 89
D. 93

Answers

B.


Hope this helps!!!
B hope it’s correct

WILL MARK BRAINLIEST IF CORRECTSelect all values that are part of the domain of the function below. You must select
all correct answers.

Answers

The domain is the x value.

List the x value of where all the dots are:

-6, -4, -2, 1, 4

Domain is the x value

Which of the following measurements, in centimeters (cm), could be the lengths of the sides of a trianglo? Select all that apply

Answers

Answer:

1

3

6

Step-by-step explanation:

the 2 sides added have to be greater than the hypotunese

1 is a right angle triangle because of the pythagorus theorem
3 is a obtuse scalene triangle
6 is a obtuse scalene triangle
it can’t be the others because the sum of two sides is always greater than the third

(please ask if you want a more detailed explanation)

Complete the puzzle so that each row, column, and diagonal adds up to the same total.

Answers

Answer:

0 in the middle, minus 4 up centre, minus 3 down right and 2 right centre

Values of the elements in the Matrix are A₂₁ = -2, A₂₂ = 0, A₂₃ = 4, A₃₃ = 5.

What is the matrix?

A collection of numbers lined up in rows and columns to form a rectangular array is called a matrix. The elements, or entries, of the matrix, are the integers. In addition to many other areas of mathematics, matrices have numerous applications in the fields of engineering, physics, economics, and statistics.

given, the sum of each row is equal to the sum of each column equals the sum of all diagonals.

Since, the sum of column C₁ = 3 + -2 + 1 = 2

the sum of Row R₁ = 3 + A₂₁ + 1 = 4 + A₂₁

Since this is equal to the sum of column C₁

thus, 4 + A₂₁ = 2

A₂₁ = -2

the sum of column C₂ = A₂₁ + A₂₂ + 4

C₂ = -2 + A₂₂ + 4

C₂ = A₂₂ + 2

Since this is equal to the sum of column C₁

2 = A₂₂ + 2

A₂₂ = 0

the sum of Row R₂ = -2 + A₂₂ + A₂₃

R₂ = -2 + 0 + A₂₃

Since this is equal to the sum of column C₁

2 = -2 + A₂₃

A₂₃ = 4

the sum of Row R₃ = -1 + 4 + A₃₃

R₃ = -3 + A₃₃

Since this is equal to the sum of column C₁

2 = -3 + A₃₃

A₃₃ = 5

therefore, the values of the matrix's elements are A₂₁ = -2, A₂₂ = 0, A₂₃ = 4, A₃₃ = 5.

learn more about matrix here:

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EXPERT HELP I'LL GIVE BRAINLIEST:

Answers

Answer:

C) 846 in^2

Step-by-step explanation:

(15x48) + (21x3x2) = 846

Answer: 846 sq ft

Step-by-step explanation:

21 x 15 x 2= 630

3 x 15 x 2= 90

3 x 21 x 2= 126

846 sq ft

Which of the following expressions are equivalent to 3(4k + 2K) ?
A
3(4k + 2h)
B
2(6h + 3k)
C
3(2k + 4h)
D
12h + 6k

Answers

The correct answer would be D
The answer to that problem is D

EXPERT HELP I'LL GIVE BRAINLIEST:

Answers

Answer:

990, C

Step-by-step explanation:

The formula for the surface area of the bottom cushion is

A = 2wl + 2lh + 2hw (w is width, l is length, h is height)

w = 18, l = 21, h = 3

A = 2(18)(21) + 2(21)(3) + 2(3)(18)

A = 2(378) + 2(63) + 2(54)

A = 756 + 126 + 108

A = 990 (C)

the answer is c. credits to the person above me. :]

Use the GCF and distributive property to write an equivalent expression.
15b+20c

Answers

Answer:

3b+4c

Step-by-step explanation:

You can reduce it to this

It could be 3b+4b if that helps

Plz help! I need ASAP thank you!

Answers

That is a good point in the answer above!
I think the answer is D

A story's main theme might be difficult to figure out because: *
ENGLISH

(A.)Authors rarely want the reader to figure it out

(B.)It has little to do with plot, characters, and other story elements

(C.)Only complicated, adult stories have themes

(D.) It is rarely stated explicitly


HELP ME FAST!!!!

Answers

the answer is D. It is rarely stated explicitly
the answer is D.
Hope this helped!

At each scooter's top speed, Brand A scooter goes 2 miles per hour faster than Brand B. If after traveling at its top speed for 3 hours, Brand A scooter traveled 40.2 miles, at what rate did Brand B scooter travel if it traveled the same distance as Brand A? Write an equation to determine the solution and then write an equivalent equation using only integers.

Write an equation to determine the solution.

Answers

Answer:

Step-by-step explanation:

40.2=3(x+2)

134=10x+20

134-20=10x+20-20

114=10x

11.4=x

Help please, im drowning in homework

Answers

Answer:

circumference: 37.7

area: 113.1

Step-by-step explanation:

Answer to the circumstances is 37.7
Area is 113.1

Solve for Variable: 3x + 7 < 16
A. x > 3
B. x < 5
C. x > 6
D. x < 3

Answers

Answer:

D. x < 3

Step-by-step explanation:

3x + 7 < 16

To solve, we have to isolate x.

3x + 7 < 16

Subtract 7 from both sides :

3x < 9

Divide 3 from both sides :

x < 3

Now in some cases, you could say that the inequality sign would switch, but this is only when you divide by a negative sign, so keep that in mind.

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