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MariettaO [177]
2 years ago
15

Please answer this question correct now fast

Mathematics
1 answer:
Tom [10]2 years ago
8 0

Answer: 14.1

Step-by-step explanation:

Law of cosines:

d^2 = 8^2 + 10^2 - 2(8)(10)cos103

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A printer takes 30 minutes to print a banner and a poster. I will take 50 minutes to print a banner and three posters. How long
qwelly [4]

Answer:

It takes the printer 20 minutes to print a banner

Step-by-step explanation:

Notice that there are two unknowns in this problem: the time to print a poster and the time to print a banner. Let's assign the letter "b" to the time it takes to print a banner, and "p' the time it takes to print a poster.

So we can write the following two equations involving the total amount of time that takes to print in the two cases:

b+p=30\\b+3p=50

We can solve for the unknown "p" by subtracting term by term in the equation set above:

b+3p=50\\b+p=30\\\\b-b+3p-p=50-30\\2p=20\\p=10

So it takes 10 minutes to print each poster, we can find the time it takes to print the banner by using the value we just found in one of the equations:

b+p=30\\b+10=30\\b=20

So, it takes 20 minutes to print a banner.

8 0
2 years ago
Help algebra 2 please
34kurt

Answer:

option 4

Step-by-step explanation:

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           = x²*(x² - x -1)   + x(x² - x -1) + 1*( x² - x -1)

            = x²*x² - x²*x -x²*1   + x*x² - x*x -x*1 + x² - x -1

            = x⁴ - x³ - x² +x³ - x²  - x  + x² - x -1

           = x⁴  - x³ + x³  - x² - x² + x² - x - x - 1

       = x⁴ - x² - 2x - 1

4 0
2 years ago
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Step-by-step explanation:

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Find the length of the third side. If necessary, round to the nearest tenth.​
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Answer:

7.8

Step-by-step explanation:

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2 years ago
If the class was going to get a class pet and 5 picked fish and 7 pick bird and 8 picked Rabbits have many students were in the
Sedbober [7]
Sum up the total number of votes.
So, 5+7+8=20 students
3 0
2 years ago
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