5x + 25y = 60....multiply by -3
3x + 15y = 42....multiply by 5
-------------------
-15x - 75y = - 180 (result of multiplying by -3)
15x + 75y = 210 (result of multiplying by 5)
-------------------add
0 = 30...incorrect.....this system has no solutions
Good evening ,
Answer:
<h2>f(8) = 74</h2>
Step-by-step explanation:
f(x) = x² + 3x – 14
Then
f(8) = 8² + 3(8) – 14
= 64 + 24 - 14
= 64 + 10
= 74
:)
Answer:
the years are longer
Step-by-step explanation:
the planets days and nights length depends on its tilt and rotation speed. so it has nothing to do with that. A and C are wrong
the longer it takes to revolve around the sun the longer the year is, so its not B
Answer:
15
Step-by-step explanation:
Maybe the second one or third one
