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Bezzdna [24]
3 years ago
15

Write an equation for an exponential growth function where the initial population is 80 and the population quadruples during eac

h time period.
Mathematics
1 answer:
liq [111]3 years ago
6 0
f(t) = 80(4^t)

For each time period, each time "t" increases by one, the population will be multiplied by 4.
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Choose all of the sums that are RATIONAL.​
S_A_V [24]

Answers:

  1. Rational
  2. Rational
  3. Rational
  4. Irrational
  5. Rational
  6. Irrational

In short, 4 and 6 are irrational. Everything else is rational.

============================================

Explanation:

A rational number is one in the form p/q where p,q are integers and q is nonzero. In the case of something like 3/5, we have p = 3 and q = 5.

Any terminating decimal can be converted to a rational number. Eg: 0.125 = 125/1000.

Any whole number is a rational number. Eg: 5 = 5/1.

Adding any two rational numbers leads to some other rational number.

Based on what is mentioned above so far, this means choices 1 through 3 are rational sums.

---------

Choice 4 is not rational because sqrt(2) is irrational. The rule is

irrational+rational = irrational

Choice 5 is a rational sum because sqrt(4) = 2 = 2/1

Choice 6 is irrational for similar reasons as choice 4. Here pi = 3.14... is irrational.

6 0
3 years ago
If you prove that △ABD is congruent to △CDB, which general statement best describes what you have proved?
fredd [130]

Answer:

  A: Opposite sides of a parallelogram are congruent

Step-by-step explanation:

The only diagonal involved is BD, so none of the statements regrading diagonals has been proven. The only thing proven is ...

  AB ≅ CD . . . . opposite sides are congruent

  AD ≅ CB . . . . opposite sides are congruent

5 0
2 years ago
Anybody ????? I will mark you brainliest
lesya [120]
The answer is B ....
4 0
3 years ago
Read 2 more answers
a rocket was launched into the air from a platform above the ground. The height, in feet, of the rocket above the ground t secon
vova2212 [387]
For this case we have the following expression:
 h (t) = -16t ^ 2 + 64t + 80
 For t = 0 we have:
 h (0) = -16 (0) ^ 2 + 64 (0) + 80
 h (0) = -0 + 0 + 80
 h (0) = 80 feet
 Therefore the number 80 represents the initial height of the rocket
 Answer:
 
the 80 in the expression represented:
 
the initial height of the rocket
5 0
3 years ago
You begin the week with 20 units of milk. You purchase 40 units. Your ending inventory for the week is 30 units. How many units
Musya8 [376]

Answer:

30 units.  

Step-by-step explanation:

Let x be number of milk units sold.

It has been given that You begin the week with 20 units of milk. You purchase 40 units. Therefore, total units of milk will be 20+40=60 units.

It has been given that your ending inventory for the week is 30 units, which means after selling x units from 60 units you are left with 30 units.

We can set this information in an equation as:

60-x=30

-x=30-60

-x=-30

x=30

Therefore, you have sold 30 units.

8 0
3 years ago
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