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Pepsi [2]
3 years ago
12

F(n)=2n-5 ;find f (-8)

Mathematics
2 answers:
lorasvet [3.4K]3 years ago
7 0

Answer:

-21

Step-by-step explanation:

f(-8) = 2(-8)-5 = -21

dedylja [7]3 years ago
7 0
The answer is -21 .....
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Emily, Carl and Antony altogether has 121 stamps. How many stamps doeas each of them have, if it is known, that Emily has 40% mo
Leviafan [203]

Answer:

Step-by-step explanation:

1. First, put together the information we have. Total = 121. Emily has 40% more than Carl, and Carl has 60% more than Antony.

2. Next, set each person as a variable. Antony = x. Carl = 1.6x. Emily = 1.4 times 1.6x.

3. Next, form an equation using these variables.

    x + 1.6x + (1.4 x 1.6x) = 121

    x + 1.6x + 2.24x = 121

    4.84x = 121

    x = 25

4. Finally, plug in x to our previous variables in step #2 to find the number of stamps Emily and Carl have.

<u>Antony</u>: x = 25 stamps

<u>Carl:</u> 1.6x = 40 stamps

<u>Emily</u>: 1.4 times 1.6x = 56 stamps

By the way, is this for RSM? If so, I am working on that problem right now and I searched up the solution but couldn't find it, so I stumbled upon this. I hope this helped!

8 0
3 years ago
What is the simplified answer to 5/2
Yanka [14]
Maybe it the mixed number form. 2 1/2?
8 0
3 years ago
Help with this please now
sammy [17]

Answer:

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Step-by-step explanation:

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7 0
3 years ago
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A cone is inscribed in a right square pyramid. What is the remaining volume if the
diamong [38]

Answer:

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4 0
2 years ago
Find the value of tanθ, if cosθ = 4/5 ; 0° ≤ θ&lt; 90°
Montano1993 [528]

Answer:

  • 3/4

Step-by-step explanation:

<u>Given </u>

  • cosθ = 4/5
  • 0° ≤ θ < 90°

<u>In the first quadrant both sine and cosine are positive, so as tangent.</u>

  • tanθ = sinθ / cosθ =
  • \sqrt{1 - cos^2}θ / cosθ =
  • \sqrt{1 - (4/5)^2} / 4/5 =
  • \sqrt{9/25} / 4/5 =
  • 3/5*5/4 =
  • 3/4
4 0
3 years ago
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