Determine whether (1, 1) and (-1,4) are solutions to 2x + 5y < 7.
1 answer:
Start by plugging both points within each parenthesis into x and y. Do it interchangeably also!
2(1)+5(1)= 7, which means it isn’t going to prove true. Because 7 isn’t greater than 7.
Since both are 1 it is already interchangeable.
2(-1)+5(4)=-2+20, which is 18. This means the solution doesn’t work, because 7 isn’t greater than 18.
2(4)+5(-1)=8+-5, which is 3. This one must work because 7 is greater than 3!
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The answer is -4
Hope this helps
25cm squared
Explanation: there are four squares which are 2x2 in area so 4x4=16. there is one square which is 3x3 =9. 16+9=25
Answer:
Step-by-step explanation:
Well you could round it to the 4th decimal, which would be 2.7183
That as a mixed number would be
-3.6
Step-by-step explanation:
z/(-2) + -5 = -3.2 → times -2
z + 10 = 6.4
z = 6.4 - 10
z = -3.6
