1) From 30 inches to 24 inches. What is the percent of change? A. Increase 20% B. Decrease 25% C. Increase 20% D. Decrease 20%​

Answers

Answer 1

Answer:

either d or b???

Answer 2
It’s clearly a decrease, since it goes form a higher number (30) to a lower one (24).
30-24 = 6
6/30 = x/100
Work:
6 x 100 = 600
600/30 = 20

So there’s a 20% decrease.

Related Questions

The distance traveled by a toy car can be modeled by D(t) = t3 − 3t2 + t − 3, where t > 3 represents time in seconds. If the car traveled for t − 3 seconds, identify the expression that represents the speed of the toy car.

Answers

Answer:

[tex]t^2+1[/tex]

Step-by-step explanation:

We are given that

Distance traveled by a toy car

[tex]D(t)=t^3-3t^2+t-3[/tex]

Where t>3

Time taken by car =t-3 seconds

We have to find the expression which represents the speed of the toy car.

We know that

[tex]Speed=\frac{Distance}{time}[/tex]

Using the formula

[tex]Speed=\frac{(t^3-3t^2+t-3)}{t-3}[/tex]

[tex]Speed=\frac{t^2(t-3)+(t-3)}{t-3}[/tex]

[tex]Speed=\frac{(t-3)(t^2+1)}{t-3}[/tex]

[tex]Speed=t^2+1[/tex]

Hence, the expression  which represents the speed of the toy car

[tex]t^2+1[/tex]

The expression  that represents the speed of the toy car is [tex]t^2 + 1[/tex].

The calculation is as follows:

Given that,

The distance traveled should be [tex]D(t) = t^3 - 3t^2 + t - 3[/tex]

Here t>3

Time taken by car = t -3 seconds

Now the expression should be

[tex]Speed = Distance \div time\\\\= ( t^3 - 3t^2 + t - 3) \div (t - 3)\\\\= t^2(t - 3) + (t - 3) \div (t - 3)\\\\= (t - 3) (t^2 + 1) \div (t - 3)\\\\= t^2 + 1[/tex]

Learn more: brainly.com/question/16911495

how do you graph y=-x-2?

Answers

Answer:

Ok i'm going to try to explain this

Step-by-step explanation:

So the X Intercept is -2, and the Y intercept is -2 aswell.

Every 1x, it does down by one. Here is a graph.

Which multiple of 7 is greater than 45 and less than 50?

Answers

Answer:

49

Step-by-step explanation:

Answer

the answer is 49

Sam invests $6,000 in a savings account at 6%
for 3 years. How much did he earn in interest?

Answers

answer: $1,080

explanation: interest = principal x rate x time

>> interest = 6,000 x 0.06 x 3

after multiplying, you get 1,080, which is the simple interest

**tip: turn the rate/percent into a decimal, then multiply

Choose all of the points where the graph of the line 3x + 2y = 6 and the graph of the parabola y = x2 - 4x + 3 interact

Answers

Answer:

d yes that is the correct answer

Which value of y makes the inequality 3y^2+2(y-5)>8 true


A y=0
B y= -1
C y= -2
D y= -3

Answers

Answer:

Conclusion:

As y = -3 MAKES the inequality TRUE.

Therefore, option D i.e. y = -3 is true.

Step-by-step explanation:

Given the inequality

3y² + 2(y - 5) > 8

For y = 0

substitute y = 0 in the inequality

3y² + 2(y - 5) > 8

3(0)² + 2(0 - 5) > 8

3(0) + 2(-5) > 8

0 - 10 > 8

-10 > 8

FALSE!

-10 can not be greater than 8.

Hence, y = 0 does not make the inequality true.

For y = -1

substitute y = -1 in the inequality

3y² + 2(y - 5) > 8

3(-1)² + 2(-1 - 5) > 8

3(1) + 2(-6) > 8

3 - 12 > 8

-9 > 8

FALSE!

-9 can not be greater than 8.

Hence, y = 1 does not make the inequality true.

For y = -2

substitute y = -2 in the inequality

3y² + 2(y - 5) > 8

3(-2)² + 2(-2 - 5) > 8

3(4) + 2(-7) > 8

12 - 14 > 8

-2 > 8

FALSE!

-2 can not be greater than 8.

Hence, y = -2 does not make the inequality true.

For y = -3

substitute y = -3 in the inequality

3y² + 2(y - 5) > 8

3(-3)² + 2(-3 - 5) > 8

3(9) + 2(-8) > 8

27 - 16 > 8

11 > 8

TRUE!

11 is indeed greater than 8.

Hence, y = -3 MAKES the inequality TRUE.

Conclusion:

As y = -3 MAKES the inequality TRUE.

Therefore, option D i.e. y = -3 is true.

Answer:

D

Step-by-step explanation:

Please help me graph
Y=1.5x
Will mark brainliest!!

Answers

Thank you! The line should pass through points (2,3), (4,6), (6,9), (8,12)

−6p=48

Help a kid out

Answers

Answer:

p = -8

Step-by-step explanation:

-6p = 48

divide both sides by -6

p = -8

8=y+3 solve for the variable

Answers

Answer:

5

Step-by-step explanation:

8 = y + 3

5 + 3 = 8

Therefore y = 5

Answer:

y = 5

8=y+3

8-3=y+3-3

5=y

hope it's helpful ❤❤❤❤

THANK YOU.

Ruth prepared 10 kilograms of dough after working 2 hours. How many hours
did Ruth work if she prepared 40 kilograms of dough? Assume the relationship
is directly proportional.

Answers

Answer:

8 hours

Step-by-step explanation:

can you help me plz

Tim and Kevin each sold candies and peanuts for a school fund-raiser. Tim sold 16 boxes of candies and 4 boxes of peanuts and earned $132. Kevin sold 6 boxes of peanuts and 20 boxes of candies and earned $190. Find the cost of each.

Answers

Answer:

Tim's Cost of the box of candy: 7$ for one box

Tim's Cost for the peanuts: $5 for one box

Kevin's Cost for the candy is: $8 for one box

Kevin's Cost for the peanuts are: $5 for one box

Step-by-step explanation:

Tim:

7x16=112

5x4=20

112+20=132

Kevin:

20x8= 160

5x 6=30

160+30 =190

which expression is equivalent to 3 x 3 x 3 x 3

Answers

Answer:

I can’t c anything where are the answers we’re choosing ?

Step-by-step explanation:

Answer:

raise 3^4 and ans is 81 or u can simply multiply.

tan 235° = 2tan20°+ tan215°​

Answers

Given :  tan 235 = 2 tan 20 + tan 215

To Find : prove that

Solution:

tan 235 = 2 tan 20 + tan 215

Tan x = Tan (180 + x)

tan 235 = tan ( 180 + 55) = tan55

tan 215 = tan (180 + 35) = tan 35

=> tan 55 = 2tan 20 + tan 35

55 = 20 + 35

=> 20  = 55 - 35

taking Tan both sides

=> Tan 20 = Tan ( 55 - 35)

=> Tan 20  = (Tan55 - Tan35) /(1 + Tan55 . Tan35)

Tan35 = Cot55 = 1/tan55 => Tan55 . Tan35 =1

=> Tan 20  = (Tan 55 - Tan 35) /(1 + 1)

=> Tan 20  = (Tan 55 - Tan 35) /2

=> 2 Tan 20  = Tan 55 - Tan 35

=> 2 Tan 20 +  Tan 35 = Tan 55

=>  tan 55 = 2tan 20 + tan 35

=>  tan 235 = 2tan 20 + tan 215

QED

Hence Proved

evaluate 3z+6 when z=4​

Answers

Answer:

18

Step-by-step explanation:

plug 4 for z

3(4)+6=18

Is −5 a solution to the equation 6 + 5 = 5 + 8 +2? PLS HELP

Answers

Answer:

it is false

Step-by-step explanation:

Answer:

False

Step-by-step explanation

6+5 ?= 5+8+2

11≠15

False

With this equation it was asking you is 6+5 equal to 5+8+2

and the answer is no, false.

Divide the polynomials.
Your answer should be a polynomial.
22 - 71 +12
I-3

Answers

Answer:

x - 4

Step-by-step explanation:


Increase £55 by 37%
Give your answer rounded to 2 DP.

Answers

Answer:

75.35

Step-by-step explanation:

I hope this helped

Billy is going on a road trip. The amount of gas g (in gallons) left in his tank varies inversely with the amount
of time he has been driving t in hours. He has 10 gallons left after 4 hours. Write the equation for this
situation.
40

Answers

Answer:

The equation to represent the situation is [tex]10 = \frac{k}{4}[/tex]

Step-by-step explanation:

It is given that:

Amount of gas left in tank varies inversely with the amount of the time.

Let,

g represents the gas

t represents the time

g ∝ 1/t

[tex]g = \frac{k}{t}[/tex]

Here, k represents the constant of proportionality.

Putting g = 10 and t = 4 in the equation

[tex]10 = \frac{k}{4}[/tex]

Therefore,

The equation to represent the situation is [tex]10 = \frac{k}{4}[/tex]

Brian can iron 3 shirts in 5 minutes. If Brian irons at a constant rate, how many shirts can he iron in 30 minutes? WILL GIVE BRANLIEST

Answers

Answer:

18

Step-by-step explanation:

Answer:

18

Step-by-step explanation:

30/5 = 6

6 * 3 = 18

What is the value of X?

Answers

Answer:

x=12°

Step-by-step explanation:

180 - 90 = 4x - 2° + 3x + 8 °

90°= 7x + 6

90° - 6 = 7x

7x = 84

x= 84/7

x = 12

is irrigation the artificial of application of water to the land or soil

Answers

I believe both is the answer to your question. In the definition of this word both land and soil are correct.

The definition of irrigation is:

"Irrigation is the artificial process of applying controlled amounts of water to land to assist in production of crops. Irrigation helps to grow agricultural crops, maintain landscapes, and revegetate disturbed soils in dry areas and during periods of less than average rainfall. "

Solve the following equations:
A) 3x = 15
B) y + 7 = 13​

Answers

Answer:

x=5

y=6

Step-by-step explanation:

a) 3x=15

      /3

x=5

b) y+7=13

      -7

y=6

Pls help semester ends to day pls help with both 16 and 17

Answers

Answer:

Step-by-step explanation:

16. -73.5 ft / 3 min = -24.5 ft/min

17. ($50.25 - $22.50 + $50.25 - $22.50 - $22.50) / 5 = $33 / 5 = $6.60

Answer:

16.-73.5÷3=-24.5 feet per minute

17.(50.25-22.5+50.25-22.5-22.5)÷5=6.6

Please help quick

10 points

Answers

Answer:

[tex]y = x - 1[/tex]

:))))))))))

Answer:

-1

Step-by-step explanation:

the line goes through the y axes and it goes over -1 as it passes

10e=1
What does E equal cause i need help

Answers

To solve for e, divide 10 from each side.. 1 divided by 10 e=0.1

The value of e is 0.1 in the equation 10e=1.

In the equation 10e = 1, the letter "e" represents an unknown variable.

To find the value of "e," you need to isolate it on one side of the equation.

Divide both sides of the equation by 10:

(10e) / 10 = 1 / 10

This simplifies to:

e = 1/10

e=0.1

Hence, the value of e is 0.1.

To learn more on Equation:

https://brainly.com/question/10413253

#SPJ6

MMMM THE MODERATORS ARE MAKING ME FLIPPING ANGRY! I NEED SOMEONE TO ANSWER MY QUESTION PLEASE .

Answers

Answer:

780

Step-by-step explanation:

So 5% is 39 so 5% x 20 is 100% do the same with the 39 so do

39 x 20 = 780

can someone pls tell me if the equations are wrong or right and if wrong what is the proper equation

Answers

Answer:

the answer would be 12 apples pies andbakr

(06.01)
Solve the following system of equations and show all work.

y = x2 + 3
y = x + 5

Answers

By substitution
2x+3 = x+5
2x-x=5-3
X=2

And y=2(2) +3
Y=7

Hi can someone help me plz??????

Answers

the bottom pointy part should be at (-4,0) i think

A mechanic charges $20.00 an hour, h for labor plus parts. If the parts cost $217.00, write a linear equation that will find the total cost, c. ​

Answers

Answer:

y=20x+217

Step-by-step explanation:

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