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hram777 [196]
3 years ago
7

45 – 15 – 15 = A. 15. B. 0. C. 1. D. 30

Mathematics
2 answers:
Hatshy [7]3 years ago
7 0
45 - 15 - 15 = 45 - 30

45 - 30 = (15)
Leviafan [203]3 years ago
5 0
45-15-15= 45-30=15: Result : A. 15
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FromTheMoon [43]

Answer:

4.5 i believe correct me if i'm wrong

Step-by-step explanation:

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3 years ago
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Mademuasel [1]

Answer:

1. 64cm² , 2. 240yd² , 3.≈220.5cm² , 4.≈193.4m² , 5. 38.6ft² , 6. ≈78.1yd² , 7. ≈120.7

Step-by-step explanation:

1. A=12x4.5+2x5 , 2. A=24x8+0.5x12x8 3. A=0.5x16x15+0.5x8²π ,4. A=7x15+0.5(15/2)² 12 ,5. A=3.6(16/2)+0.5x7x2.8 ,6. A=8(16/2)+0.5x9π ,7. A=(8/4)x5²xcot(180/8)

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viva [34]

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Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
What is the sum of the areas of circle C and circle D?
Morgarella [4.7K]
Assuming that the center of each circle is at point C and D, then both have a radius of 7cm. We know that the formula for solving area of the circle is A=pi*r².
Then we solve area of once circle multiplied by two to get the total area of the given circles. The solution is shown below:
C1 area=3.1416*7²
C1 area=153.9384 cm²
Summation of the area of circle C and D is shown below:
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4 0
3 years ago
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WINSTONCH [101]

Answer:

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Step-by-step explanation:

The first incorrect step occurred in Step 1, where all the exponents were increased by 4.

This is mathematically incorrect due to exponential rules. When distributing exponents inside parentheses, we have to multiply the existing exponents inside the parentheses by the exponent outside the parentheses.

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We multiply the exponents instead of adding them together.

Therefore, the correct Step 1 should multiply all the variables' exponents by 4.

Steps 2 and 3 are correct since we do add the exponents when multiplying exponents with the same base, and we do subtract exponents with the same base when dividing.  

6 0
3 years ago
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