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just olya [345]
2 years ago
5

How can x2 = x2 + 2x + 9 be set up as a system of equations?

Mathematics
1 answer:
arsen [322]2 years ago
7 0
X2=x2+2x+9

x2-x2=2x+9
2x+9=0
2x=-9
x=-9/2
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You can model the population of a certain city between the years 1965 and 1995 by the radical function P(x) = 75,000 ^3sqrt x-19
LuckyWell [14K]

Answer: B. 1975


Step-by-step explanation:

Given:  The model of population of a certain city between the years 1965 and 1995 by the radical function

P(x)=75000\sqrt[3]{x-1940}

To find the x year at which population is 245,000, put this in equation we get

245000=75000\sqrt[3]{x-1940}\\\\\Rightarrow\frac{245000}{17000}=\sqrt[3]{x-1940}\\\\\Rightarrow3.266=\sqrt[3]{x-1940}\\\\\Rightarrow\ x-1940=(3.266)^3..........\text{[by taking cube on both sides]}\\\\\Rightarrow\ x-1940=34.8587\\\\\Rightarrow\ x=1940+34.8587\\\\\Rightarrow\ x=1974.8587\approx1975

Hence, at year 1975 the population of the city is 245,000.

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3 years ago
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3 years ago
The following steps are used to rewrite the polynomial expression (x+2y)(x-5y)
neonofarm [45]
(x+2y)(x-5y)
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aleksley [76]

Answer:

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Step-by-step explanation:

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