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zepelin [54]
3 years ago
9

WORTH 20 PTS!!!

Mathematics
1 answer:
Rama09 [41]3 years ago
7 0
For this case we have the following function:
 A (t) = A0e ^ {(kt)}

 Where,
 A0: initial population
 K: rate of change
 t: time in years
 Substituting values we have:
 A (t) = 22000 * e ^ {(- 0.021 * t)}

 For the year 2015 we have:
 A (t) = 22000 * e ^ {(- 0.021 * 5)}

A (t) = 19807
 Answer:
 
the predicted population in 2015 is:
 
19,807
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Name two points on a line that has a slope of 5 over 8.
GREYUIT [131]
Y=mx+b ....formula of slope

m refers to slope and b is intercept,,,so this become equation of y.
now answer,
y=5/8x+b 
6 0
3 years ago
Riddle #2
zheka24 [161]

Answer:

28416

Step-by-step explanation:

No digits can be repeated

"All my digits are factors of 24" This means that the possible digits are: 1, 2, 3, 4, 6, 8

"The digits in my thousands place equals the perimeter of a 2x2 array" That would be 8

"The digits in my ten thousand places is twice the value of the digits in the hundreds place, but half the value of the digits in the thousands place" That would be 4, which also means that the ten thousands place is 2

"The digits in my tens place equal the number of lines of symmetry in an isoceles triangle" There is only 1 lines of symmetry

This means that we have 2841(?)

Because this number is even and no digits can be repeated, the only possible digits from those available is 6

Therefore the number is 28416

3 0
3 years ago
2 1/3 ÷y=1 2/5 ÷(−1.1)
Arada [10]

Answer:

1.2x - 10.8 - 2.3x - 9.2 = -1.1x - 20; Rewrite as follows. (x 2y)(xy 2) = (x 2 x)(y y 2) ... x + 2.3; - x / 5 = 2; (x - 4) / (- 6) = 3; (-3x + 1) / (x - 2) = -3; x / 5 + (x - 1) / 3 = 1/5 ... 2 x 2 - 8 = 0; x 2 = -5; 2x 2 + 5x - 7 = 0; (x - 2)(x + 3) = 0; (x + 7)(x - 1) = 9; x(x - 6) = -9 ... For what value of the constant k does the quadratic equation x 2 +2x = - 2k .

Step-by-step explanation:

7 0
3 years ago
The balloon uses 4.5 quarts of gas in 7 minutes. How many gallons will it use per hour?
antoniya [11.8K]

Answer:

≈9.64 gallons

Step-by-step explanation:

To solve, we can figure out how many quarts are in a minute and use that to figure out how many quarts are in an hour. Then, we can convert quarts to gallons.

4.5 quarts = 7 minutes

First, we can find how many quarts equal 1 minute. To do this, we can divide both sides by 7 because anything divided by itself equals 1

4.5/7 quarts = 1 minute

Next, we want to figure out how many quarts go into 60 minutes, or 1 hour. To do this, we can multiply both sides by 60 because 1 * 60 = 60

4.5 * 60 / 7 quarts = 60 minutes = 1 hour

We now know how many quarts are in an hour, so we can now convert quarts to gallons

4 quarts = 1 gallon

divide both sides by 4

1 quart = 1/4 gallons

To get from quarts to gallons, we can divide by 4, so we have

(4.5 * 60 / 7)/4 = 4.5 * 60 / 28

≈9.64 gallons

4 0
3 years ago
Please helppppp!!!!!!!!!!!
Snezhnost [94]

Answer:

<h2>hope it helps you see the attachment </h2>

8 0
3 years ago
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