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Svetlanka [38]
2 years ago
13

8f(x)=x

Mathematics
1 answer:
victus00 [196]2 years ago
6 0

Answer:

-2 and -4

Step-by-step explanation:

Given the function f(x) = x² + 6x + 8

If f(x) = 0

x² + 6x + 8 = 0

Factorize

x² + 4x + 2x+ 8 = 0

x(x+4)+2(x+4) = 0

(x+2)(x+4) = 0

x+2 = 0 and x+4 = 0

x = -2 and -4

Hence the zero of the function is -2 and -4

You might be interested in
Your friend tells you that if you let him keep 50 of your Pokemon cards for a month, he will give you 1 card extra
ivolga24 [154]

Answer:

0.2682 or 26.82%

Step-by-step explanation:

The monthly interest rate (r) that your friend is willing to pay is:

r=\frac{1}{50}=0.02

The following expression converts a monthly interest rate (r) into an annual interest rate (i):

r=\sqrt[12]{1+i}-1

For r = 0.02:

0.02=\sqrt[12]{1+i}-1 \\1.02^{12}-1=i\\i=0.2682

Your friend is willing to pay an annual rate of 0.2682 or 26.82%.

4 0
3 years ago
2x+5y=11 and 4x+3y=1 solve with elimination
storchak [24]
Multiply you first equation by 2 to get 4x + 10y = 22
Now the x terms can be eliminated and cancelled out using elimination.
4x + 10y = 22
4x + 3y = 1

To eliminate you need to "subtract", so you need to multiply one of the equations by -1. 

4x + 10y = 22
-4x -3y = -1
------------------
0 + 7y = 21
y = 3

Now plug 3 into either one of the equations to get x.
7 0
3 years ago
Y" - 4y = ((x^2) - 3) sin 2x
Gekata [30.6K]
Well i did this in my notes and i found this 

8 0
2 years ago
(1 - 3k) - 4(2 + 2.5k)<br>tbh I just need the answer
sashaice [31]
-7-13k would be the answer
3 0
3 years ago
A culture started with 4,000 bacteria. After 5 hours, it grew to 4,800 bacteria. Predict how many bacteria will be present after
eimsori [14]
First we need to find k ( rate of growth)
The formula is
A=p e^kt
A future bacteria 4800
P current bacteria 4000
E constant
K rate of growth?
T time 5 hours
Plug in the formula
4800=4000 e^5k
Solve for k
4800/4000=e^5k
Take the log for both sides
Log (4800/4000)=5k×log (e)
5k=log (4800/4000)÷log (e)
K=(log(4,800÷4,000)÷log(e))÷5
k=0.03646

Now use the formula again to find how bacteria will be present after 15 Hours
A=p e^kt
A ?
P 4000
K 0.03646
E constant
T 15 hours
Plug in the formula
A=4,000×e^(0.03646×15)
A=6,911.55 round your answer to get 6912 bacteria will be present after 15 Hours

Hope it helps!
4 0
3 years ago
Read 2 more answers
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