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musickatia [10]
2 years ago
8

Which of the following expressions is equivalent to 13^(2)-3^(2)

Mathematics
1 answer:
Amiraneli [1.4K]2 years ago
8 0

Answer:

160

Step-by-step explanation:

13² - 3² = 13 × 13 - 3 × 3 = 169 - 9 = 160

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Someone help me out i don’t understand
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Answer:

3.9 km

Step-by-step explanation:

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5 0
3 years ago
Seven pounds of grapes cost 10.43. How much would 3 pounds cost?
KiRa [710]
To answer this we will find the unit rate by dividing. Lets do it:-

10.43 ÷ 7 = 1.49
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CHECK OUR WORK:-

1.49 × 7 =  10.43
we were RIGHT!!!

Now lets multiply to see how much 3 pounds would cost. 

1.49 × 3 = 4.47

CHECK OUR WORK:-

4.47 ÷ 3 = 1.49
We were RIGHT!!

So, 3 pounds of grapes cost $4.47. 

Hope i helped ya!! 
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The answer is 4,800 . You have to multiply 120 and 40.
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