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vredina [299]
2 years ago
5

How can properties of operations be used to add expressions?

Mathematics
1 answer:
Gelneren [198K]2 years ago
7 0
Use this. Hope it helps

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Monday I got 3 papers for each class. I have 7 classes in total. How many papers did I get on Monday.
ANEK [815]
You got 21 papers on Monday. Because if you add 3 7 times it equals 21.





Hope it is correct!
7 0
3 years ago
Read 2 more answers
This isosceles triangle has two sides of equal length that are longer than the length a of the base b the perimeter of the trian
agasfer [191]
The answer is 3.1 cm
Solution:
2(6.3)+b=15.7
12.6+b=15.7
subtract 12.6 from btohs ides
b=3.1
answer is base=3.1 cm
3 0
3 years ago
Corresponding points of (-1, 1/2)
Musya8 [376]

Answer:

(-2,0), (-1,1), (0,2)

Step-by-step explanation:

3 0
3 years ago
Warren measured a rectangular window to find out how much plastic he would need to cover it.the window measured 5ft 6in. by 2ft
BabaBlast [244]
5ft 6in = 66 in
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3 0
2 years ago
John made this model to show \frac{4}{7}\times\frac{13}{9} 7 4 ​ × 9 13 ​ Using John's model, what is \frac{4}{7}\times\frac{13}
harkovskaia [24]

Answer:

\frac{4}{7}\times\frac{13}{9} = \frac{52}{63}

Step-by-step explanation:

Given

See attachment for model

Required

Determine \frac{4}{7}\times\frac{13}{9} from the model

The model is represented by:

\frac{4}{7}\times\frac{13}{9} = \frac{4}{7}\times\frac{9}{9} + \frac{4}{7}\times\frac{4}{9}

To get: \frac{4}{7}\times\frac{9}{9}, we consider the first partition

The number of shaded box is 63 ---- this represents the denominator

The total boxes shaded at the bottom is 36 ---- this represents the numerator

So, we have:

\frac{4}{7}\times\frac{9}{9} = \frac{36}{63}

To get: \frac{4}{7}\times\frac{9}{9}, we consider the first partition

The number of shaded box is 63 ---- this represents the denominator

The total boxes shaded at the bottom is 16 (do not count the gray boxes) ---- this represents the numerator

So, we have:

\frac{4}{7}\times\frac{4}{9} =\frac{16}{63}

The equation becomes:

\frac{4}{7}\times\frac{13}{9} = \frac{4}{7}\times\frac{9}{9} + \frac{4}{7}\times\frac{4}{9}

\frac{4}{7}\times\frac{13}{9} = \frac{36}{63} + \frac{16}{63}

\frac{4}{7}\times\frac{13}{9} = \frac{36+16}{63}

\frac{4}{7}\times\frac{13}{9} = \frac{52}{63}

5 0
2 years ago
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