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barxatty [35]
3 years ago
10

Randy and Sandy have a total of 20 books between them. After Sandy loses three by leaving them on the bus, and some birthday gif

ts double Randy's collection, their total increases to 30 books. How many books did each have before these changes?
Explanation please :)
Mathematics
1 answer:
nasty-shy [4]3 years ago
3 0

Answer:

Randy had 13 books an Sandy had 7 books.

Step-by-step explanation:

20 - 3 = 17

30 - 17 = 13

13 x 2 = 26

26 + 4 = 30

13 + 7 = 20

Hope this helps! Please mark as brainliest.

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Luis found two bicycles he likes. The price of the first bicycle is $73.59. The price of the second bicycle is $98.50. Estimate
Anuta_ua [19.1K]
The difference is $24.91. how I got the answer.

I just kept adding til I got the right number, so to make it quick, I knew that I could add 20+73.59=93.59. then I added 4.91+20+73.59=$98.50.

You could do subtraction if that make it easier on you!

I hope this helps!
5 0
3 years ago
Which of the following statements shows the inverse property of addition?
Olin [163]

Answer:

Statements  y + (-y) = 0 shows the inverse property of addition ⇒ 1st answer

Step-by-step explanation:

Let us revise some important notes

  • The purpose of the inverse property of addition is to get a result of zero (any number added to its opposite will equal zero)
  • The purpose of the inverse property of multiplication is to get a result of 1 (any number multiplied by its reciprocal will equal 1)
  • The additive identity is zero
  • The multiplicative identity is 1
  • The difference between the additive identity and the inverse property of addition that additive identity states that a number plus zero equals that number, and the inverse property states that the sum of a number and its additive Inverse is zero

In → y + (-y) = 0

∵ -y is the additive inverse of y

∵ The sum of y and its additive inverse = 0

- By using the definition of the inverse property of addition up

∴ Statements  y + (-y) = 0 shows the inverse property of addition

7 0
3 years ago
Which of the following is an example of chemical weathering?
Verdich [7]
I think the answer is acid rain ig
5 0
3 years ago
Jessica Jones $425 per week working at a hair salon the weekly expenses are $93.50. What percentage of weekly income goes to pay
AysviL [449]

Answer:

22%

Step-by-step explanation:

22% of 425 is 93.5

This means that 22% of her weekly income goes to paying her weekly expenses​.

Hope this helped!!

Please leave a thanks and a rating!

If this helped you please consider giving brainliest!!

3 0
3 years ago
peter keeps his pigs in a pen with a length of x+9 and a width of x-2. what is the area of peters pig pen
Vadim26 [7]

Step-by-step explanation:

my answer is x-7

hmmm.. I hope its correct#

5 0
3 years ago
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