MATHEMATICS MIDDLE SCHOOL

© Work out the percentage change when a price of £20 is decreased to £3.
©

Answers

Answer 1
Answer:

Answer:

The percentage change is 85%

Step-by-step explanation:

To calculate percentage change

Percentage change = difference/original price × 100

Difference = £20 - £3 = £17

Price = £20

Percentage change = 17/20 × 100

= 17 × 5

= 85%


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MIDDLE SCHOOL

13. Which equation is equivalent to 8x + 4y = -24?

Answers

Answer:

2x + y = - 6

Step-by-step explanation:

Given

8x + 4y = - 24 ( divide each term by 4 )

2x + y = - 6 ← is an equivalent equation

MIDDLE SCHOOL

What is 209 rounded to the nearest ten and hundred

Answers

For this case we have the following definitions:

tens place: number of two digits greater than zero

hundreds place: three-digit number greater than zero

In both cases we must round when the previous number is greater than or equal to five.

We then have the following number:

209

Rounding off we have:

to the nearest ten = 210

to the nearest hundred = 200

Answer:

The rounded number 209 is:

to the nearest ten = 210

to the nearest hundred = 200

209 rounded to the nearest ten; 210

209 rounded to the nearest hundred; 200

Hope this helped ;)
HIGH SCHOOL

If the total price paid for an item is $20.25 and the cost of the item before sales tax is $18.90, what is the rate of sales tax?

Answers

1.35€........................
COLLEGE

Ryan goes to a library to check out an encyclopedia. He notices that the length of the book is bigger than he anticipated. He decides to find the length of the book with the help of a ruler. Which measure would be appropriate for the length of the book?

Answers

The measure that would be appropriate to find the length of a book would be inches. Hope this helps!
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