<em>Greetings from Brasil...</em>
Let's solve this inequality.
Let's isolate X. For this, the elements that are with it must be sent to both sides:
- 3 < - 4X + 1 < 13
- 3 - 1 < - 4X < 13 - 1
- 4 < - 4X < 12
<h2>- 3 < X < 1</h2>
<em>important: see annex</em>
The ones on the right for both questions is greater because if you think about the fractions as a pie or pizza, the fewer the slices, the larger the slices will be.
9514 1404 393
Answer:
A, B
Step-by-step explanation:
Divide both sides by 6 to see what those values should be:
x < 4
Of course all negative numbers are less than 4, so choices A and B are correct. The given positive numbers are not less than 4, so the remaining choices are not correct.
Note that (a+b)^2 = a^2 + 2ab + b^2. This is always true.
Let's re-write the given "<span>ab = 8 and a^2+b^2=16" as
a^2 + 2ab + b^2 = 16 + 2ab, or, equivalently, as
(a+b)^2 = 16 + 2(8) = 32.
This is the answer we wanted.
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