Answer:
42mm
Step-by-step explanation:
Let the shortest side of the triangle be 5x, the middle side be 6x, and the longest side be 8x.
5x+6x+8x = 159.6
19x = 159.6
x = 159.6 ÷ 19
x = 8.4
Shortest side of triangle (5x) = 8.4 × 5
= 42
Answer:
(15+(3-6))x4
Step-by-step explanation:
1. 3-6 = -3
2. 15+-3 = 12
3. 12x4 = 48
Answer:
The total number of possible outcomes if the code has 3 letters is 64
Step-by-step explanation:
The keypad has only the letters A-D, that is, A,B,C,D.
To calculate the total number of possible outcomes if the code has 3 letters,
let these spaces represent the code _ _ _
For the first space, there are 4 possibilities (since we have 4 letters)
For the second space, we also have 4 possibilities (since there is no restriction on repetition)
Also, we have 4 possibilities for the last space.
Hence, the total number of possible outcomes if the code has 3 letters is 4×4×4 = 4³ = 64.
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Find the cost of the first 10 hours:
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10 hours = $220 x 10
10 hours = $2200
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Find the cost of the next 5 hours (only the second mechanic worked):
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5 hours = $2725 - $2200
5 hours = $525
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Hourly charge of the second mechanic:
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5 hours = $525
1 hour = $525 ÷ 5
1 hour = $105
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Hourly charge of the first mechanic:
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$220 - $105 = $115
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Answer: First mechanic = $115/hour ; Second mechanic = $105/hour
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