Mark bought a car for x dollars. One year later the car was 0.85x. What was the percent decrease.

Answers

Answer 1

Answer:

[tex]Let~the~percentage~decrease~be~equal~to~y.\\Then,\\0.85x = x-\frac{y}{100}(x)\\or, 0.85x = x-0.01xy\\or, 0.85x = x(1-0.01y)\\or, 0.85 = 1-0.01y\\or, 0.01y = 1-0.85 = 0.15\\or, y =15\\So, ~the~decrease~of~the~price~is~15%.[/tex]

Alternative method:

[tex]Percentage~decrease = \frac{Initial~Rate-Final~rate}{Initial~Rate}(100) \\~~~~~~~~~~~~~~~~~~~~~~~~~~~~~=\frac{1-0.85}{1}(100) = 0.15(100)=15[/tex]

Answer 2

Answer:

thr percent decrease is 15%

Step-by-step explanation:

you get 1.00 which represent beginning price u subtract the current price 1.00-0.85 you get0.15 which is 15%

Related Questions

Simplify the expression 10a + 5b + 3 - 25a + 2b - 18 + 3b - 5a pls!!!

Answers

Answer:

−20a + 10b − 15

Step-by-step explanation:

The expression simplified is: −20a + 10b − 15

hope this helps

The sum of the digits of a certain two digit nuber is 12. when you reverse its digits you increase the number by 18.find the number

Answers

6+6=12
12+6 =18

Hope this helps!
Leave a like and brainliest

Write an exponential function whose graph passes through the points (0,-2) and (2,-50)

Answers

Answer:

first sub in (0,-2) to get

-2 = ab^0, but b^0 = 1

so a=-2

so far we have

y = -2b^x

now use the other point (2,-50)

-50 = -2(b^2)

b^2 = 25

b= ±5

however in exponentional equations the base is usually positve, so now you have

y = -2(5^x)

sub in x=-2 and you got it.

Step-by-step explanation:

hope it helps..

Identify whether the following numbers are rational or irrational i) 0.11011001100011...........
ii) 2.56565656...........

Answers

Answer:

i) is irrational and ii) is rational

Step-by-step explanation:

i) does not keep a consistent pattern. If it was .11011011011.... it would be a rational number, but since it keeps changing its pattern it would be considered irrational. ii) is rational because it has a consistent pattern that doesn't change.

Step-by-step explanation:

0.11011001100011...............is your answer right answer

7x-3=18
What is x in the question i cbat figure it out

Answers

7x-3 = 18
+3 for both sides

7x = 21
devide 7 for both sides

x = 3

Select the correct answer
A fair, unbiased coin was flipped 10 times, giving the results shown in the table, where Ttails and heads.

What is the difference between the theoretical and experimental probabilities of getting heads?
please help ill mark you the brainlyest!!!!

Answers

Answer: The answer is most likely 0.3

Step-by-step explanation:

The difference between the theoretical and experimental probabilities of getting heads is 0.3.

This question is solved using the concepts of theoretical and experimental probabilities.

Theoretical probability: Calculated without considering previous trials. Experimental probability: Calculated considering previous trials.

----------------------------

Theoretical probability:

A fair coin means that it is equally as likely to be heads or tails, so 0.5 theoretical probability of getting heads.

----------------------------

Experimental probability:

Out of 10 trials, 2 resulted in heads, so 2/10 = 0.2 experimental probability of getting heads.

----------------------------

Difference:

0.5 - 0.2 = 0.3

The difference between the theoretical and experimental probabilities of getting heads is 0.3.

A similar question is found here: https://brainly.com/question/23995602

sam had 5 apples and kate gave her 5 more how many do she have now

Answers

Answer:

Step-by-step explanation:

Same had 5
She then received 5 more from Kate
5+5= 10

She has 10 apples now.

evaluate bc + 5a
when a = 3, b = 4, and c = -6

Answers

Evaluation by bc+5a when a is 3 and b is 4 and c is -6 it is 51

Answer:

-15

Step-by-step explanation:

if b= 4 and c=-6 it would be 5 times -6 which equals to -30. since this equation needs to be done with pemdas you dont add just yet. then you go and multiply 5 times 3 which is 15. and then you can add both totals you got which would be 15 + -30.

The circumference of a circle with diameter is 28 is

Answers

Answer:

the answer is 87.96

Step-by-step explanation:

Answer:

87.92 units

Step-by-step explanation:

circumference = D x Pi = 28(3.14) = 87.92

l=prt
you have to solve for t

Answers

Answer:

T is equal to I divided by pr. [tex]t=\frac{I}{pr}[/tex]

Step-by-step explanation:

This is the equation for interest.

I is interest.

P is the principal

r is the interest rate

t is the time in years

you have to isolate for t.

Because multiply p times r times t, divide both sides by pr due to the fact that division is the inverse operation of multiplication

Then you are left with t= i divided by pr.

hope this helps

Solve the inequality 7(x+2)-5>3(x-1)

Answers

Answer:

x>-3

Step-by-step explanation:

I used a calculator

I need help I'm failing plzzzzz god bless you!

Answers

Answer:

Step-by-step explanation:

Answer:

Uhm I don’t see what u need help with?

Step-by-step explanation:

PLS HELP. CIRCUMFERENCE QUESTION! WILL GIVE BRAINLIEST

Answers

Answer:

L = 24,873.6 miles

Step-by-step explanation:

Length of the Circumference

Given a circle of radius r, the length of the circumference, or line surrounding the shape is:

The Earth has a diameter of 7,917.5 miles. The radius is half the diameter:

r=7,917.5/2=3,958.75 miles

Assuming a plane flies around the equator at ground level, the distance it would travel is:

L = 24,873.6 miles

HELP ASAP

Work out

137% of 720.11kg

Give your answer rounded to 2 DP.

Answers

Answer:

The answer is 986.55 kg.

Step-by-step explanation:

When asked to find 137% of 720.11 kg, we can take the percentage, 137%, and convert it into a decimal by moving the decimal point over to the left twice.

137% = 1.37

After converting the percentage to a decimal point, we can multiply the original given value by the decimal.

720.11 kg x 1.37 = 986.5507 kg

And then we round to the nearest hundredths place, which will give us 986.55 kg.

The required evaluation of 137% of 720.11 kg would be 986.55 kg.

What is the percentage?

The percentage is defined as a ratio expressed as a fraction of 100.

We have to determine the evaluation of 137% of 720.11 kg.

⇒ 137% of 720.11

137% is expressed as 15/100 in fractional form

⇒ (137/100)(720.11 )

137/100 is expressed as 0.95 in decimal form

⇒ (1.37)(720.11 )

Apply the multiplication operation, and we get

⇒ 986.55

Therefore, 137% of 720.11 kg would be 986.55 kg.

Learn more about the percentages here:

brainly.com/question/24159063

#SPJ2

What is the mode of the data set (30,28,30,45,40,37,35)
28
30
45
37

Answers

Answer:

Step-by-step explanation:

mode is the number that occurs most of the time

since 30 appears twice in the data set

while the other numbers only appear once,

30 is the mode

○=> Correct option :[tex]\color{plum}\bold{(b) \: 30}[/tex]○=> Steps to derive correct option :

▪︎Mode is the most frequently occurring element in a given data set.

The given data set :

[tex] =\tt 30,28,30,45,40,37,35[/tex]

Let us first arrange these numbers in ascending order :

[tex] =\tt 28,30,30,35,37,40,45[/tex]

As we can clearly observe, the number 30 occurs the most frequently.

Thus, the mode of this data set = 30

Therefore, the correct option is (b) 30

A square has sides of length 4xcm. A rectangle is 4x by (x+6) cm. The
area of the square is triple the area of the rectangle. Find the dimensions of
each figure.

Answers

Answer:

x = 18 cm

Step-by-step explanation:

(4x)^2 = 3(4x)(x+6)

16x^2=3(4x)(x+6)

divide both sides by 4x

4x = 3(x+6)

4x=3x+18

x = 18

whats the missing varible for the following questions

Answers

Answers + Explanation:

1. x + 7 =10

if you know some number + 7 is 10, you know that number must be 3.

so, x = 3

the other way you can solve this would be:

x + 7 = 10

subtract 7 from both sides of the equation

x + 7 - 7 = 10 - 7

x = 3

2. Use the same strategy:

x - 8 = -5

add 8 to both sides of the equation

x - 8 + 8 = -5 + 8

x = 3

3. x + 3 = 6

subtract 3 from both sides of the equation

x + 3 - 3 = 6 - 3

x = 3

4. x + 6 = 3

subtract 6 from both sides of the equation

x + 6 - 6 = 3 - 6

x = -3

Learning Task 3
Solve the word problems
1. The sides of the quadrilateral are consecutive numbers. If the perimeter is 160,
how long is each side?
2. Inzo is 10 years older than Migz. Five years ago Migs is one-third as old as
Inzo. What are their present ages?
3. An express train travels 100 kph from station A to station B. A local train
travelling at 45 kph, takes 45 minutes longer for the same trip. How far apart
is station A from station B.
4. The sum of two consecutive even integers is less than 60 but greater than 24
Find at least 3 pairs of numbers
5. The perimeter of the square is less than 152 m. Find the possible length of t
sides of the square.

Answers

Answer:

Step-by-step explanation:

Conflict is

the deliberate attempt to control a person by force, to oppose someone, or to harm another person.

when two or more people or groups work together to achieve a goal that will benefit more than one person.