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Helga [31]
4 years ago
15

A Forrest has 800 pine trees but a disease is introduce that kills 1/4 of the pine trees in the forest every year.

Mathematics
2 answers:
lora16 [44]4 years ago
7 0

Answer:

P(t)=800(3/4)^t

Step-by-step explanation:

Pepsi [2]4 years ago
6 0

Answer:

If there are 800 trees and 1/4 of them die to this disease.

Step-by-step explanation:

800=400x2=800/2=400 so 100/400 die so 200/800 die so in 4 years time the whole population will die.

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Given that the points (12, –4) and (–36, 8) lie on a line, what is the equation of the line?
Alinara [238K]

The equation of the line passing through the points (12, –4) and (–36, 8) is y = -1/2 x  - 1

The formula for calculating the equation of a line is expressed as:

y = mx + b

m is the slope of the line

b is the y-intercept

Given the coordinate points expressed as (12, –4) and (–36, 8)

Get the slope:

m = 8+4/-36-12

m = 12/-48

m = -1/4

Get the y-intercept "b"

Recall that y = mx + b

8 = -1/4(-36) + b

8 = 9 + b

b = 8 - 9

b = -1

Get the required equation.

Recall that y = mx + b

y = -1/2 x + (-1)

y = -1/2 x - 1

Hence the equation of the line passing through the points (12, –4) and (–36, 8) is y = -1/2 x  - 1

Learn more here: brainly.com/question/17003809

3 0
3 years ago
Evaluate w (-9).<br> w (n) = n2 +5
Artyom0805 [142]

Answer:

w(-9) = 86

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

<u>Algebra I</u>

  • Function Notation

Step-by-step explanation:

<u>Step 1: Define</u>

w(n) = n² + 6

w(-9) is n = -9

<u>Step 2: Evaluate</u>

  1. Substitute:                     w(-9) = (-9)² + 5
  2. Exponents:                    w(-9) = 81 + 5
  3. Add:                               w(-9) = 86
5 0
3 years ago
Sarah created a pattern her rule was and for all the numbers and Sarah's pattern were add three of the numbers and Sarah's patte
Vanyuwa [196]
The answer is 3 because 3 does not have the number 10 in it  could also be 4,6,7,8,9
3 0
4 years ago
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If 3y+2 is equal to -2+y then what is y
garik1379 [7]

Answer:

y=-2

Step-by-step explanation:

3y+2=-2+y

subtract the 1y from both sides leaving you with 2y+2=-2

Then subtract 2 from both sides leaving you with 2y=-4

Then divide by 2 on both sides leaving you with y=-2

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Tamiku [17]

Answer:

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3 years ago
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