Answer:
2.475
Step-by-step explanation:
cot(pi/7)
Taking pi = 22/7
=>cot(22/7 ÷ 1/7)
=>cot(22/7 x 7)
=>cot(22)
=>2.475
Number 10 is 257.08 inches of ribbon. I’m not sure about number 9
The fact that the coefficients are pairwise identical (except for sign) tells you that x^2 -1 is a factor (and x-5 is the other factor). Of course, you recognize x^2-1 as a special form (the difference of squares) that is factored as (x +1)(x -1).
The zeros are x = -1, +1, +5.
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A graphing calculator confirms this.
Answer:
$1,792
Step-by-step explanation:
3 1/2×36.40=116.48
116.48÷6.5%=1,792
$1,792
2 kilometer = 1.243 miles.
Let x = how long it takes Lisa to run 2 kilometers.
7/x = 1/1.243
Solve for x to find your answer.