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never [62]
3 years ago
15

Which of the following properties could be used to rewrite the expression (1/3+2/7) + 3/4 as 1/3 + (3/4 + 2/7)?

Mathematics
1 answer:
Mamont248 [21]3 years ago
6 0

Answer:

B

Step-by-step explanation:

I believe it is the communtative property followed by the associative property.

Sorry if that is not right!

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Please help me out..(:
Nitella [24]

Let's call the left side of this tirangle y and downside z.

3² + 6² = y²

y² = 45

y² + z² = (3 + x)²

45 + z² = 9 + 6x + x²

x² + 6² = z²

45 + x² + 6² = 9 + 6x + x²

45 + x² + 36 = 9 + 6x + x²

45 + 36 - 9 = 6x

72 = 6x

x = 12

4 0
4 years ago
Prove that the difference between 9th square number and 5th square number is a multiple of 8?​
Yuki888 [10]

Answer:

Step-by-step explanation:

9th square number = 81

5th square number=25

81-25=56

56 is a multiple of 8 as 8 x 7=56

8 0
3 years ago
How to find the equation of a line with two points.
pogonyaev

Step-by-step explanation:

First you want to fine the slop (rise over run) and the y-intercept of both lines

8 0
3 years ago
Seven times a number is equal to 12 more than three times the number. Find the number
nadya68 [22]
x-\ number\\\\
7x=3x+12\ \ \ | subtract\ 3x\\\\
4x=12\ \ \ | divide\ by\ 4\\\\
x=3\\\\
Number\ is\ 3.
5 0
3 years ago
Kelly drinks 0.5 liters of coffee and 0.3 liters of yogurt drink at breakfast. How much did she drink in total in milliliters?
konstantin123 [22]

Answer:

800 milliliters

Step-by-step explanation:

we know that

To find out the total amount Kelly drank, add the amount of coffee and the amount of yogurt and convert the result to milliliters.

so

0.5+0.3=0.8 liters

Remember that

1 liter= 1,000 milliliters

so

0.8 liters=0.8*1,000=800 milliliters

6 0
4 years ago
Read 2 more answers
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