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AlexFokin [52]
3 years ago
11

What 2 numbers add up to 37 and multiply to -210?

Mathematics
1 answer:
dedylja [7]3 years ago
7 0
Let us assume the two unknown numbers to be "x" and "y".
Then
x + y = 37
And
xy = - 210
x = - 210/y
Now let us put the value of "x" in the first equation, we get
x + y = 37
- (210/y) + y = 37
y^2 - 210 = 37y
y^2 - 37y - 210 = 0
y^2 - 42y + 5y - 210 = 0
y(y - 42) + 5(y - 42) = 0
(y - 42)(y + 5) = 0
So when
y - 42 = 0
y = 42
Then
x = -(210/42)
   = - 5
Again when
y + 5 = 0
y = -5
Then
x = 42
So the two unknown numbers are 42 and -5. I hope the procedure is clear enough for you to understand.
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The population of a certain species of bird in a region after t years can be modeled by the function P(t)= 1620/1+1.15e^-0.042t
natka813 [3]

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A

Step-by-step explanation:

The function is  \frac{1620}{1+1.15e^{-0.042t}}

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So, we replace time with maximum (\infty). Let's check:

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Lesechka [4]

Answer:

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Step-by-step explanation:

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equation of any line parallel to line (i) is

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since, the line(ii) passes through (1,5)[replacing x=1 and y=5 in eqn(ii), we get]

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bagirrra123 [75]

Answer:

t>12

Step-by-step explanation:

t>180/15

then divide 180 by 15

and you gey t>12

4 0
3 years ago
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