A shop decreases prices by 10% and then by a further 20%.
Rachel says: “Prices have now decreased by 30%”.
Is Rachel correct?
You must show your working

Answers

Answer 1

Answer:

yes rachel is correct

Step-by-step explanation:

because 10%+20%=30%


Related Questions

Please help I don’t understand at all if you could possibly break it down that would be nice.

Answers

sub 2 for any "x"

3(2)^2-2(2)+1

6^2-4+1            i dont know if you need to simplify even more but if you do

36-4+1         32+1     31

i hope this helps you!

Answer:

The answer is 9.

Step-by-step explanation:

Hey there, so it looks to me that you just have to subsitute 2 in for x, and solve the equation. Like this.

1. Plug in X: 3(2)^2 -2(2) + 1

2. Solve exponents (2)^2 = 4, so the equation is 3(4) - 2(2) + 1

3. Multiplication: 3 × 4 = 12, and -2 × 2 = -4, so the equation is 12 - 4 + 1

4. Addition: -4 + 1 = -3, so it is now 12-3

5. Subtraction: 12-3 = 9, so the answer is 9!

I hope this helps.

Calculate the length of the unknown side of this right-angled triangle.
9 cm
8 cm

Answers

Answer:

the length of the unknown side of the right angle triangle is 1 cm

Step-by-step explanation:

The computation of the length of the unknown side of the right angle triangle is shown below:

= √9^2 - √8^2

= √81 - √64

= 9 - 8

= 1 cm

Hence, the length of the unknown side of the right angle triangle is 1 cm

please i need this next i will give u the brainlyist

Answers

Answer:

the answer is B

On the surface, it seems easy. Can you think of the integers for x, y, and z so that x³+y³+z³=8? Sure. One answer is x = 1, y = -1, and z = 2. But what about the integers for x, y, and z so that x³+y³+z³=42?

Answers

Answer:

I'm really sorry, but you said I could do this but I don't know the answer and I hope someone else can help you, but thank you for helping me! :)

Step-by-step explanation:

Plot the image of point C about point P with a scale factor of 2

Answers

Go up 2 times from C and then take and angle from that and do it 3 times

estimate 4.7 % of 160

16

8

80

47

Answers

Answer:

hhsjjsjsjsjsjsjsjsjsjsjjz

Step-by-step explanation:

jsjsjsjsjsjsjsjsjsjsjsjdjdjdjdj

For the function y=12x+6, if the input is x=−4, the output is y=

Answers

Answer:

12(4) +6

48+6 = 54

y=54

Step-by-step explanation:

Step-by-step explanation:

Given function: y = 12x + 6

Input: x = -4

Replacing the value of x in function y,

y = 12 x (-4) + 6

y = -48 + 6

y = -42

5x^+20x +15=0
Pls help

Answers

Is the 5 squared?ejskjsjwbsnnsmsnsnsnmsnsnsnsnsjsjjs

Express the product of (2x + 3) and (x - 5)

Answers

Answer:

Here is the answer......

Answer:

2x² - 7x - 15

Step-by-step explanation:

Given

(2x + 3)(x - 5)

Each term in the second factor is multiplied by each term in the first factor, that is

2x(x - 5) + 3(x - 5) ← distribute parenthesis

= 2x² - 10x + 3x - 15 ← collect like terms

= 2x² - 7x - 15

what are the domain and range of this exponential function y=1/9 .6​

Answers

The domain of exponential functions is all real numbers. The range is all real numbers greater than zero. The line y=1/9.6 is a horizontal asymptote for all exponential functions.
When a>1:as x increases, the exponential function increases, and as x decreases, the function decreases.

Write a quadratic function f whose zeros are 3 and 10

Answers

Answer:

[tex]f(x) = {x}^{2} - 13x + 30[/tex]

Step-by-step explanation:

A quadratic equation may be expressed as a product of the two binomials. The roots of the equations are 3 and 10, so the factors are (x-3) and (x-10).

f(x) = (x-3)(x-10)

f(x) = x^2 - 13x + 30

Find the area of the figure, in square meters, to 1 decimal place.

Answers

To find area, you multiply the two dimensions, or base x height.

---

hope it helps

sorry if it didn't, you didn't provide much clarification

Answer:

Step-by-step explanation:

6 >2 k + 4 what does k equal

Answers

Answer:

k = anything that is less than 2, so 1, 0, -1, -2, -3, -3 1/4, etc.

Hope that helps!

Step-by-step explanation:

How do I solve this?

Answers

Answer:

76

Step-by-step explanation:

forgive me if im wrong. i just calculated it.

Answer:

A. 38°

Step-by-step explanation:

angle of tangents of circle = (Bigger arc - smaller arc) / 2

x = (218 - 142) / 2 = 76 /2 = 38°

Lauren is four times as old as Ethan. Lauren is also 15 years older than Ethan. How old are Lauren and Ethan?

Answers

Answer:

lauren 15 ethan 12 ?

Step-by-step explanation:

lauren is 20 ethan is 5

Draw a line representing the "rise" and a line representing the "run" of the line. State the slope of the line in simplest form.

Answers

Answer:

Step-by-step explanation:

First choose two points on the line,

Let the points are A and B.

From point A to B we are moving downwards by (5 - 1 = 4 units)

Therefore, Rise = -4

Horizontal distance between A and B = 2 units

Therefore, Run = 2

Since, slope of a line = [tex]\frac{\text{Rise}}{\text{Run}}[/tex]

Slope = [tex]\frac{-4}{2}[/tex]

          = -2

You took 600mg of pain reliever at
12:00pm. Each hour, the pain reliever
loses 50% of itself in your
bloodstream. How much is still left in
your blood stream at 5:00pm?

Answers

Answer:

It’s not a question for studying

Step-by-step explanation:


Warm-Up
Alma is going to walk through the park from Point A to
Point B
What distance will she walk?
HELPPPPPPPPPPPPPPPPP

Answers

Answer:

I think the answer is 200 feet

Step-by-step explanation:

Pythagoras is the sum of the square of two sides is equal to the square of the longest side. Then Alma is going to walk through the park from Point A to Point B is 282.84 ft.

What is a right-angle triangle?

It is a type of triangle in which one angle is 90 degrees and it follows the Pythagoras theorem and we can use the trigonometry function.

A right-angle triangle has sides with lengths 200 ft and 200 ft.

By Pythagoras theorem, we have

H² =  P² + B²

H² = 200² + 200²

H² = 40000 + 40000

H² = 80000

H  = 200√2

H  = 282.84 ft

Alma is going to walk through the park from Point A to Point B is 282.84 ft.

More about the right-angle triangle link is given below.

https://brainly.com/question/3770177

a movie rental company charges a $50 annual fee, then $2 for each movie you rent. what is the average cost per movie if you rent 25 movies in a year

Answers

Answer:

100

Step-by-step explanation:

PLS help ASAP I DONT have time to answer this, it also detects if it’s right or wrong.

Answers

37.68 yards is the answer!!!

Someone please help me on this it’s due in minutes

Answers

Answer:

number of hours is 64

amd number of washes is 12

The value of 4 less than the product of 0.25 and x is greater than 6.

Answers

Answer:

0.25x - 4 > 6

Write as a fraction or mixed numbers.

7.22

Answers

for fraction form 361/50 you can simplify from there

Answer:

361/50 or 7[tex]\frac{11}{50}[/tex]

Step-by-step explanation:

7.22 = 722/100 = 361/50 = 7 11/50

The number 7.22 can be written using the fraction 722/100 which is equal to 361/50 when reduced to lowest terms.

It is also equal to 7 11/50 when written as a mixed number.

You can use the following approximate value(s) for this number:

7.22 =~ 7 2/9 (if you admit an error of = 0.030779%)

361/50 =~ 7 1/4 (if you admit an error of 0.415513%)

7.22 =~ 7 (if you admit an error of -3.047091%)

How many things can happen if you spin the spinner three times and flip the coin three times?

Answers

Answer:

8

Step-by-step explanation:

8 possible outcomes

We can now extend this thinking. If we toss three coins, we have a total of 2 × 2 × 2 = 8 possible outcomes: HHH, HHT, HTH, HTT, THH, THT, TTH, and TTT.

Write the number that is the solution of this equation. 8x- 10 = 70 *

Answers

8x - 10 = 70

8x = 70 + 10

8x = 80 / : 8

x = 10

What is the Rotational speed of someone standing in Helsinki, Finland located at 60°11' N and 24°56' E.? (radius of the earth is 3960 miles)

Answers

Answer:

515.5 mph

Step-by-step explanation:

I am fairly confident we are taking the same test/quiz thing right now and I figured this one out so here ya go:

60 degrees + 11 sec = 60.183 degrees

3960 * cos(60.183) = 1969       some number in relation to the distance to the poles

2 * pi * 1969 = 12371.8

12371.8 / 24 = 515.5mph

look up "How to Calculate Rotational Speed Around Earths Axis" on YT, video is by " VAM! Physics & Engineering" that is where I found the formula stuffs

shoutout Woodinville

Which statement can be used to justify the fact that to write angles are suppleMentry select two opinions

Answers

Answer:

Which statement can be used to justify the fact that to write angles are suppleMentry select two opinions== 3 and 6

May someone help me with this :)

Answers

Answer:

Perimeter is 30 and area is 32

Step-by-step explanation:

7+8+7+8= 30 and A= BH so 8 x 4 = 32

 Please help me with this/ will give brainlist

Answers

Answer:

45

Step-by-step explanation:

describe how to use special product patterns to find 21^2

Answers

Answer:

21 x 21 = 441

Step-by-step explanation:

Whenever there is an exponent that is the many times you multiply the base by itself to.

Power is the result of multiplying two numbers together. The value of 21^2 is 441.

What is power?

Power is the result of multiplying two numbers together. Power is typically expressed by a base number and an exponent. The base number indicates the number being multiplied. The exponent, which is a little number printed above and to the right of the base number, indicates the number of times the base number is multiplied.

Given that 21 has a power of 2, therefore, 21 to the power 2 means that 2 should be multiplied by itself twice.

21^2

= 21²

= 21 × 21

= 441

Hence, the value of 21^2 is 441.

Learn more about Power here:

https://brainly.com/question/23432317

#SPJ2

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