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tekilochka [14]
3 years ago
12

Find the solution x-2y=-26 x-y=-2

Mathematics
1 answer:
zalisa [80]3 years ago
3 0

Answer:

<h2>x = 22 and y = 24</h2>

Step-by-step explanation:

\left\{\begin{array}{ccc}x-2y=-26\\x-y=-2&\text{change the signs}\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}x-2y=-26\\-x+y=2\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad\qquad-y=-24\qquad\text{change the signs}\\.\qquad\qquad y=24\\\\\text{Put the value of y to the second equation:}\\\\x-24=-2\qquad\text{add 24 to both sides}\\x=22

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Answer:

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Step-by-step explanation:

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3 years ago
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3 years ago
A population of rabbits in a lab, p(x), can be modeled by the function p(x) = 20(1.014)x , where x represents the number of days
Nitella [24]

Answer:

20 = initial population of the rabbits

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Step-by-step explanation:

A population of rabbits in a lab, p(x), can be modeled by the function

p(x) = 20(1.014)^x

This model is exponential. Where 20 = initial population of the rabbits

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To find the average rate of change from day 50 to day 100,

find the population p(50) and p(100). Subtract them and divide by 100 - 50 = 50. 

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p(100) = 20(1.014)100 = 80.32... 

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The rate of change is 0.8. 

7 0
3 years ago
5 + n2 &gt; 8<br> A. n &gt; 6<br> B. n&gt;3<br> C. n&gt;1.5<br> D. n &lt; 26
san4es73 [151]
N•2>8
then dive both sides 2n>8
and get n>4
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3 years ago
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Answer:

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Step-by-step explanation:

4 0
3 years ago
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