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alisha [4.7K]
2 years ago
14

Evaluate 2xsquared by 2 − 5y over 3x −y when x = 2 and y = -4.

Mathematics
1 answer:
Arisa [49]2 years ago
8 0
(2x^2 -5y)/(3x-y)
((2*2)^2-(5*-4))/((3*-4)-(-4))
(4^2+20)/(-12+4)
36/-8
-4.5
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There were 200,000 animals of a certain species in 1980. Since then,this number has decreased by 4.5% each year. Approximately h
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Answer: Approximately 25187 animals of this species will be left in 2025

Step-by-step explanation:

We would apply the formula for exponential decay which is expressed as

y = b(1 - r)^x

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y represents the population of animals after x years.

x represents the number of years.

b represents the initial population of animals.

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From the information given,

b = 200000

r = 4.5% = 4.5/100 = 0.045

x = 2025 - 1980 = 45 years

Therefore,

y = 200000(1 - 0.045)^45

y = 200000(0.955)^45

y = 25187

8 0
3 years ago
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Answer:B

Step-by-step explanation:

5 0
3 years ago
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What do I do 900m = 2.700​
Novay_Z [31]

Step-by-step explanation:

given

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6 0
2 years ago
if Ethan Buy 100Tv All the Tv Cost 3,000$,If he sold all his Tv With 1,800$.How Many money will he have than?
jolli1 [7]
I don't know if that is 100 tvs or one 100 inch tv. 

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6 0
3 years ago
PLEASE HELP ASAP!
Marta_Voda [28]

Let x = larger odd integer

  then (x-2) is the smaller odd integer

 

Translate:

   "sum of two consecutive odd integers is 80"    means   (x-2) + x = 80

 

 2x -2 - 80

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4 0
3 years ago
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