I the average score is 750 and standard deviation ( sigma ) is 50 points, then score 700 - 800 is between (750 - 1 sigma) and (750 + 1 sigma).
That is 34.1 % + 34.1 % = 68.2 % of the whole population.
2,000 · 0.682 = 1.364
We expect 1,364 students to score between 700 and 800 points.
For each payment Zach will pay $430 for the skis.
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Answer:
Step-by-step explanation:
we know that
A binomial is a Difference of Squares if both terms are perfect squares
we have
so
---> is a perfect square
----> is a perfect square
Both terms are perfect squares
The difference of squares is
----> by difference of squares
Answer:
<em>17 miles</em>
Step-by-step explanation:
If Heidi starts out by traveling 15 miles south, then y = -15 miles
If she then turns and rides 8 miles east, then x = +8miles
The distance from her starting position to her tent is gotten using the pythagoras theorem as shown;
d = √(-15)²+8²
d = √225+64
d = √289
d = 17miles
<em>Hence her distance from her starting position to her tent is 17 miles</em>
Answer:
24
Step-by-step explanation:
18+6=24 They ate 18 for lunch and Rosa ate 6 more, so you add them togther
