Answer:
34
Step-by-step explanation:
x=3+√8
y =3-√8
now,
1/x^2+1/y^2
=1/(3+√8)² + 1/(3-√8)²
= [(3-√8)²+(3+√8)²] / (3+√8)²(3-√8)² [L.C.M = (3+√8)²(3-√8)² ]
=[(3-√8+3+√8)²-2(3-√8)(3+√8) ] / [(3+√8)(3-√8)]²
=[6²-2.(3²-√8² )] / (3²-√8²)² [ a²+ b²=(a+b)²-2ab]
=[36-2(9-8) ]/ (9-8)²
=[36-2.1] / 1²
=34
Answer: B. Every 10th students that enters the cafeteria
Explanation:
B is a random sample, while A, C, and D are biased.
the answers are clear if you use priority and equation rules.
- q=11
- u=2
- a=13
- l=8
- s=12
Answer:
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Step-by-step explanation:
STEP 1: <em>Rewrite so
n is on the left side of the inequality.</em>

STEP 2: <em>Subtract 2
n from 6
n
.</em>

STEP 3: <em>Move all terms containing n to the left side of the inequality.</em>
<em />
<em />
D 100% corect took my test $$$$$$$$$$$$$$