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Lena [83]
3 years ago
5

A poster is to have an area of 240 in² with 1-inch margins at the bottom and sides and a 2-inch margin at the top. Find the exa

ct dimensions that will give the largest printed area.
Mathematics
1 answer:
Rus_ich [418]3 years ago
3 0

Answer: 41 inches by 6 inches

Step-by-step explanation:

A poster is in form of a rectangle and the area is length × breadth.

If the area of the poster is 240in² with 1 inch margins at the bottom and sides and 2in margin at the top.

The extra length of the poster will be 1-in at the bottom plus 2-in margin at the top making additional height of 3-inches.

Also, the extra breadth the 1-in at the sides to give breadth of extra 2-inches in total.

The area of the extra length and breath will be 3inches × 2inches to give 6inches.

The area that will give the exact dimension will be 240inches+6inches = 246inches

The dimension an be 41inches by 6inches

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A TV set contains five circuit boards of type A, five of type B, and four of type C. The probability of failing in its first 500
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0.903264

Step-by-step explanation:

Given that a TV set contains five circuit boards of type A, five of type B, and four of type C. The probability of failing in its first 5000 hours of use is 0.03 for a type A circuit board, 0.04 for a type B circuit board, and 0.03 for a type C circuit board.

Let A' = the event that A fails, B' =  B fails and C'= C fails.

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3 years ago
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3 years ago
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Step-by-step explanation:

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3 years ago
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