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hoa [83]
1 year ago
8

-√-12 I need help there’s a picture of my question

Mathematics
1 answer:
Sophie [7]1 year ago
3 0

Answer:

The rewritten expression would be "-2i\sqrt{3}".

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An animal reserve has 40000 elk if the population is increasing at a rate of 19% per year how long will it take for the populati
vekshin1

Answer:

Step-by-step explanation:

This is of the form

P(t)=a(b)^t

Where P(t) is the ending population, a is the original population, b is the growth rate, and t is time in years.  We have everything we need to solve for t.  

80000=40000(1.19)^t

Let me explain the growth rate quickly.  If the exponential function is a growth function, that means (in this particular situation) that we have 100% of the population and we are increasing it by 19%.  That makes the growth rate 119%, which in decimal form is 1.19.  

Begin by dividing both sides by 40000 to get

2=(1.19)^t

To get that t out of its current exponential position, take the natural log of both sides:

ln(2)=ln(1.19)^t

and the rules of logs say we can bring the exponent down out front:

ln(2) = t*ln(1.19)

Divide both sides by ln(1.19) to get t alone:

\frac{ln(2)}{ln(1.19)}=t

Doing that calculation on your calculator gives you that

t = 3.9846...

but rounding to the nearest tenth gives you that

t = 4.0 years

3 0
3 years ago
I will give brainaliest if answer is correct.a baseball diamond is square.the distance from home plate to first base is 90 feet.
yan [13]

It would be 127 (usually a little over)

3 0
3 years ago
Which of the graphs below represents the equation 8x - y = -4?
vichka [17]
Well since you dont have the graphs posted i can tell u the y-intercept and the slope and you can figure it out from there.

8x-y=-4
-y=-8x-4
y=8x+4
the y intercept is 4 and the slope is positive 8
4 0
3 years ago
Read 2 more answers
Select all the factors roots of x^3 +2x^2-16x-32
Ivanshal [37]

Factor by grouping. Group up the terms into pairs, factor each pair, then factor out the overall GCF.

x^3 + 2x^2 - 16x - 32

(x^3 + 2x^2) + (-16x-32) ... pair up terms

x^2(x + 2) + (-16x - 32) ... factor x^2 from the first group

x^2(x + 2) - 16(x + 2) ... factor -16 from the second group

(x^2 - 16)(x + 2) .... factor out (x+2)

(x - 4)(x + 4)(x + 2) .... Use the difference of squares to factor x^2-16

---------------------------

The original expression completely factors to (x - 4)(x + 4)(x + 2)

The three factors are x - 4  and  x + 4   and   x + 2

5 0
3 years ago
Read 2 more answers
The physics department of a college has 8 male professors, 11 female professors, 16 male teaching assistants, and 6 female teach
Lera25 [3.4K]
To determine the probability that one or the other circumstances will occur, you will count the number of possible outcomes and divide it by all the possible outcomes.

#of female teaching assistants + # of male teaching assistants + # of female professors

6 + 16 + 11 = 33

Total = 41

33/41 = 80

There is a approximate 80% probability that one or the other will occur.
6 0
3 years ago
Read 2 more answers
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