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mixas84 [53]
3 years ago
10

Please Help! 30 Points! Please explain your answer.

Mathematics
1 answer:
deff fn [24]3 years ago
4 0
For this, you need to implement trigonometry, and the soa cah toa method is the one that I use. in this case you would use the tangent, which is toa, opposite over adjacent. in your calculator you will have to click the tan button on your calculator. in the parentheses type in 25 because that is the angle measure that you know. in this case, the side that you don't know is the adjacent side so it would be tan(25)=x/1 (I think it was a 1, it looked like the picture cut it off). this means to isolate the x you need to multiply it by the opposite length (the one on the bottom, 1) and so you need to multiply tan(25) by 1 (or whatever it is on the bottom of the equation/opposite length on the picture). you should get your answer that way and it should be bigger than the opposite side.
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If f(x) = 4x^3 + Ax^2 + 7x - 1 and f(2) = 3, what is the value of A?<br> (^ = powers)
bekas [8.4K]

Answer:

A = -10.5

Step-by-step explanation:

To find the value of "A", you can plug x = 2 and f(x) = 3 into the equation. This will allow you to simplify and find the value of "A".

f(x) = 4x³ + Ax² + 7x - 1                     <---- Original equation

3 = 4(2)³ + A(2)² + 7(2) - 1                 <---- Plug x = 2 and f(x) = 3 into equation

3 = 4(8) + A(4) + 14 - 1                      <---- Solve 2³ and 2²

3 = 32 + A(4) + 14 - 1                        <---- Multiply 4 and 8

3 = 45 + A(4)                                    <---- Combine like terms

-42 = A(4)                                         <---- Subtract 45 from both sides

-10.5 = A                                         <---- Divide by 4

If A = -10.5, the final equation would look like this:

f(x) = 4x³ - 10.5x² + 7x - 1

8 0
2 years ago
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A biologist is studying a bacteria population that initially contains 10^3 bacteria. In the lab, the population doubles every we
iragen [17]

Answer: 8000

Step-by-step explanation:

From the question, we are informed that the expression 10³ × 2^w models the population of the bacteria after w weeks.

The number of bacteria that will be present in 3 weeks will then be:

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= 1000 × 8

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ra1l [238]

Answer:

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Step-by-step explanation:

1) 2 : the greatest common factor

2) 2x+4

2x+4=2 ⋅ 2 : Separate out 2

Hope that helps

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What is 4 3/5 minus 2 1/4
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Answer:

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here u go boo

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