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SpyIntel [72]
2 years ago
8

Somebody... PLEASE help What is the only solution of 2x2 + 8x = x2 – 16?

Mathematics
1 answer:
makvit [3.9K]2 years ago
7 0

Answer:

x= - 4

Step-by-step explanation:

2 * x^2 + 8 * x = x^2 - 16

2 * x^2 - x^2 + 8 * x + 16 = 0

x^2 + 8 * x + 16 = 0

(x + 4) * (x + 4) = 0

x = - 4

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The value of a collector’s item is expected to increase exponentially each year. The item is purchased for $500. After 2 years,
Andreyy89
Y = 500(1 + r)^x; where r is the rate and x is the number of years.
500(1 + r)^2 = 551.25
(1 + r)^2 = 551.25/500 = 1.1025
1 + r = sqrt(1.1025) = 1.05

Therefore, the equation that represents y, the value of the item after x years is
y = 500(1.05)^x
7 0
4 years ago
Luis ha regalado la mitad de los DVD que tenía a Juan. Después,le ha dado la tercera parte de los que le quedaban a su hermana.
sleet_krkn [62]

Answer:

había 18 DVDs al principio

Step-by-step explanation:

si procedemos desde el final del problema , sabemos que :

total que le quedaba después de darle los CDs a Juan - lo que fue para la hermana = lo que le sobró

x  -  x/3  = 6

2/3*x = 6

x= 6 * 3/2 = 9

por lo tanto tenia x=9 DVDs después de entregarle a Juan los suyos

también sabemos que

DVDs que tenia al principio - lo que fue para Juan = 9 DVDs

y - y/2 = 9

y/2 = 9

y= 18

finalmente había y= 18 DVDs al principio

4 0
4 years ago
I will give Brainliest to whoever does this:
tino4ka555 [31]

Answer:

Ok

Step-by-step explanation:

I did it now do i get brainliest

8 0
3 years ago
Find the missing side length.<br> 12<br> 15
sashaice [31]

Answer:

you need to show the shape or somet or else I can't rlly help

7 0
3 years ago
Read 2 more answers
Ill give brainlest pls help
Katarina [22]

Answer:

It is C

Step-by-step explanation:

To get the new coordinates you would move the shape up the y-axis 8 times, and right on the x-axis 8 times as well.

8 0
3 years ago
Read 2 more answers
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