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Dmitry_Shevchenko [17]
3 years ago
8

Help please??????????

Mathematics
1 answer:
Ostrovityanka [42]3 years ago
7 0

Step-by-step explanation:

Since <em>a</em> is the final altitude after <em>t</em> minutes, we can plug in 21,000 for <em>a</em> in the given equation.

21,000 = 3400t + 600

Solve for t.

20,400 = 3400t

t = 6 minutes

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Logarithms:
WITCHER [35]

Answer:

  • A) k = 18.75
  • B) R(0.8) = 161419
  • C) R(0.3) = 275

Step-by-step explanation:

<u>Given expression</u>

  • R(x) = 6*e^(kx)

A) <u>Given</u>

  • x = 0.04
  • R = 10

<u>Solving for k</u>

  • 10 = 6*e^(0.04k)
  • e^(0.04k) = 10/6
  • ln (e^0.04k) = ln (1.6666)
  • 0.04k = 0.51
  • k = 0.51/0.04
  • k = 12.75

B) <u>Given</u>

  • x = 0.8
  • R= ?

<u>The value of R(0.8) is:</u>

  • R(0.8) =
  • 6*e^(0.8*12.75) =
  • 6*e^(10.2) =
  • 161419  rounded

C) <u>Given</u>

  • x = 0.3
  • R = ?

<u>The value of R(0.3) is:</u>

  • R(0.3) =
  • 6*e^(0.3*12.75) =
  • 6*e^(3.825) =
  • 275 rounded
4 0
3 years ago
Jenney kept track of the number of text messages she sent each day for two weeks. Use her data to complete a stem and leaf plot
Nikolay [14]
Ummm look it up or ask the teacher I thought I had the answer but I don’t sorry
5 0
3 years ago
Which situation can be represented by the<br> inequality 4x − 25 &lt; 125?
GaryK [48]
First add 25 to both sides of the inequality.
You get 4x < 150
Now divide both sides by 4.
You get x < 37.5
So x can be anything less than 37.5,  such as 36,  35 or 34.
8 0
3 years ago
Why did the 30-60-90 triangle marry the 45-45-90 triangle
Tatiana [17]

Answer: because they were right for each other.

Step-by-step explanation:

8 0
3 years ago
 help me please, no bots thank you. i’ll give you a brainly if you get it correct :)
Crank
Sorry i wish i knew the answer i’m actually learning that in class but i don’t quite understand it
5 0
2 years ago
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