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anyanavicka [17]
3 years ago
14

-15

Mathematics
1 answer:
Sloan [31]3 years ago
3 0
Try the first option if that's an option
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The diameter of the larger circle is 10.5 cm. The diameter of the smaller circle is 4.5 cm.
blondinia [14]
4.5 / 2 = 2.25cm radius for the smaller circle

3.14 (pi) × 2.25² = 15.89625cm²

10.5 / 2 = 5.25cm radius for the larger circle

3.14 × 5.25² = 86.54625cm²

86.54625 - 15.89625 = <span>70.65cm</span>² 

The answer is 70.7cm².
3 0
2 years ago
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Whats #2 because i dont understand
scoray [572]
Answer: 5/9

explanation: the coefficient is in front of the variable x, which is 5/9
8 0
3 years ago
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Find the output, b, when the input, a, is 6.<br> b = -1-7a<br> b=
natka813 [3]
The answer is -43
B=-1-7(6)
B=-1-42
B=-43
7 0
3 years ago
A marble tile measures 20 cm by 15 cm.how many tiles will be required to cover a wall of size 5m by 3m?
Rainbow [258]
First, we get the area of each tile: (100 cm = 1m)
.20 m* .15 m = 0.03m^2
Then, we solve for the total area of the wall:
5m*3m= 15m^2
Then we divide 
15/0.03 = 500 tiles
5 0
3 years ago
Victor made a cake for his cousin's birthday party. Victor baked the cake for 40 minutes. It took 8 times as long for Victor to
irga5000 [103]

Answer:

320 min. or 5 hrs 20 min.

Step-by-step explanation:

40 x 8 = 320

6 0
2 years ago
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