Answer:
Step-by-step explanation:
Answer:
66 to 70 and 85 to 90
Step-by-step explanation:
0.46
Step-by-step explanation:
23÷50= 0.46
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Answer:
The answer is (d) ⇒ e = 1/7 , k = 12 , conic ellipse
Step-by-step explanation:
∵ r = ek/(1 ± ecosФ)
∵ r = 12/(7 - cosФ) ⇒ ÷ 7 up and down
∴ r = 12/7 ÷ 1 - 1/7 (cosФ)
∴ e = 1/7
∵ 12/7 = ke ⇒ 12/7 = k(1/7)
∴ k = 12
∵ 0 < e < 1
∴ The conic is ellipse
Answer:
All are rational numbers.
Step-by-step explanation:
A rational number can be written in the form:

where a and b are integers and b≠0.
We can rewrite 136 as

hence 136 is a rational number.
715-245=470....is an integer and hence a rational number.
(47)(217)=10199....which is an integer, and all integers are rational numbers.

15 is also an integer and hence an integer.