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2 years ago

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.

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3 years ago

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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
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3 years ago

Corresponding points of (-1, 1/2)

Musya8 [376]

Answer:

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

Step-by-step explanation:

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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]

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3 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