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OlgaM077 [116]
3 years ago
9

help me please i dont understand the associative, distributive, and commutative property i also cant figure out which one it is

Mathematics
1 answer:
lorasvet [3.4K]3 years ago
3 0

Answer:

Step-by-step explanation:

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If x2+y2 = 12 and x2-y2=18, what is the value of x4-y4?
nataly862011 [7]

Answer:

Step-by-step explanation: add the equations

2x² = 30

x² = 15

y² = 12 - 15

    = -3

x4 -y4 = 15² - (-3)²

           = 216

6 0
1 year ago
In ΔMNO, the measure of ∠O=90°, ON = 35, NM = 37, and MO = 12. What is the value of the tangent of ∠M to the nearest hundredth?
svet-max [94.6K]

Answer:

2.92 Rounded to the 100th

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
There are 13 books on a shelf. 6 of these books are new. (a) What is the ratio of new books to used books? (b) What is the ratio
Drupady [299]
If 6 of the 13 books are new, then 7 of them are used. The ratio of new (6) to used (7) is

6:7 or 6/7

Ratio of all books (13) to used books (7) is

13:7 or 13/7
7 0
3 years ago
Read 2 more answers
Interest = $30, Principal = ? Rate = 3%, Time = 4 years​
Ahat [919]

Answer:

Simple interest is one of the most basic ways to calculate how much financing will cost you or how much you can earn on an investment. Check out our simple interest calculator to find out what you will pay or earn over time.

Step-by-step explanation: sorry lol

5 0
2 years ago
John is 3 years older than Susan and khalid is 5 years younger than her . The sum of their ages is 40 .
lapo4ka [179]

Answer:

John is 17,

Susan is 14,

and Khalid is 9.

Step-by-step explanation:

a = John's age

b = Susan's age

c = Khalid's age

Let's set our rules from the given information.

a = b + 3

c = b - 5

a + b + c = 40

Now, we can solve for b through substitution.

(b + 3) + b + (b - 5) = 40

3b - 2 = 40

3b = 42

b = 14

So, now that we have Susan's age, we can follow the rules and see if it holds.

17 + 14 + 9 = 40 Viola!

8 0
3 years ago
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