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If the center of the locket is at the origin of a coordinate plane, which equation represents the locket?

A
the fraction with numerator x squared and denominator 1 comma 444 plus the fraction with numerator y squared and denominator 676 is equal to 1
B
the fraction with numerator y squared and denominator 1 comma 444 plus the fraction with numerator x squared and denominator 676 is equal to 1
C
the fraction with numerator x squared and denominator 361 plus the fraction with numerator y squared and denominator 169 is equal to 1
D
the fraction with numerator y squared and denominator 361 plus the fraction with numerator x squared and denominator 169 is equal to 1
43

To the nearest tenth of a square centimeter, how many square centimeters of the plate are covered by the napkin?

A
56 point 3 square centimeters
B
60 point 0 square centimeters
C
16 point 2 square centimeters
D
57 point 8 square centimeters
46

Which is a focus of the hyperbola shown?

A
open paren negative 24 comma 0 close paren
B
open paren 25 comma 0 close paren
C
open paren 30 comma 0 close paren
D
open paren negative 20 comma 0 close paren
47

Which points are the foci of the ellipse?

A
open paren negative 6 comma negative 1 close paren and open paren negative 5 comma negative 1 close paren
B
open paren negative 8 comma negative 1 close paren and open paren negative 2 comma negative 1 close paren
C
open paren negative 5 comma negative 2 close paren and open paren negative 5 comma 0 close paren
D
open paren negative 5 comma negative 4 close paren and open paren negative 5 comma 2 close paren
49

How much more will company B pay over 30 years?

A
49 dollars comma 200
B
40 dollars comma 500
C
12 dollars comma 000
D
49 dollars comma 500
50

Which statement describes Ingrid’s claim that cosine of open paren negative pi over 2 plus y close paren is equal to sine of y and her steps in verifying her claim?

A
Ingrid’s claim is incorrect, but her steps are correct.
B
Ingrid’s claim is incorrect, and her steps are incorrect.
C
Ingrid’s claim is correct, and her steps are correct.
D
Ingrid’s claim is correct, but her steps are incorrect.

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N/A — Exam Answers — Precalculus