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cupoosta [38]
3 years ago
14

What related number sentence shows the commutative property addition 3+9=12

Mathematics
1 answer:
Dafna1 [17]3 years ago
6 0
The related number sentence that shows the commutative property addition for the equation 3+ 9 + 12 is 9 + 3 = 12

Please take note, the commutative property of addition is
a + b = c
b + a = c
a + b = b + a

Commutative originates from the word move around or commute, therefore, commutative property refers to the act of moving stuff around. In addition, the rule is a + b = b + a; wherein from the example above, means 9 + 3 = 3 + 9. They want to say that the computation uses the Commutative Property, if at any time, a computation depends on moving stuff around
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Can someone help me find the area of the following figure
ExtremeBDS [4]
1. The area of the full rectangle is 21 * 28 = 588. We will need this later. 

Like you drew, there is an imaginary triangle missing. We can find the dimensions of it by subtracting from the given information. The shorter leg of it is 21 - 12 = 9, the longer leg is 28 - 14 = 14.

Now we find the area of the triangle. Area of a triangle is 1/2 * base * height. So 1/2 * 9 * 14 = 1/2 * 126 = 63. 

Now we do the full area of 588 minus the area of the missing triangle piece. 

588 - 63 = 525 ft²

2. Do the area of the rectangle and then this time add on the area of the triangle. 7 * 15 = 105. Area of the triangle = 1/2 * 2 * 7 = 1/2 * 14 = 7. 

105 + 7 = 112 in²
6 0
3 years ago
9.35 as a fraction in simpliest form
Lana71 [14]
We know that
the number 9.35
is equal to 
9+0.35
and
0.35  is equal to
35/100
divide by 5 both members
\frac{35}{100} = \frac{7}{20}

therefore

the number 9.35  is equal to  9  \frac{7}{20}
8 0
3 years ago
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Help, I am confused although I think this is simple
Leviafan [203]

Answer:

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7 0
2 years ago
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6 0
2 years ago
A big movie theater had 1,200 seats. 864 of the total number of the seats were sold. what percentage of the seats was sold
Reil [10]

Answer:

72%.  

Step-by-step explanation:

We have been given that a big movie theater had 1,200 seats. 864 of the total number of the seats were sold.

To find what percentage of the total seats were sold we will find 864 is what percent of 1200.      

\text{ Percentage of sold seats}=\frac{864}{1200}\times 100

\text{ Percentage of sold seats}=0.72\times 100

\text{ Percentage of sold seats}=72

Therefore, 72% of the total seats were sold.


8 0
3 years ago
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