Solve the problem by estimating.Linda scored 62, 95, 90, 98, 74, and 100 on her calculus tests. Round each score to the nearest ten to estimate her total score.
A. 530
B. 510
C. 520
D. 500
Answer: C
Mathematics
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Add the given vectors by using the trigonometric functions and the Pythagorean theorem.A = 2.0, ? = 114 °B = 4.2, ? = 147 °
A. R = 0.5, ? = 137 ° B. R = 6.0, ? = 137 ° C. R = 6.0, ? = 133 ° D. R = 6.0, ? = 317 °
Mathematics
Evaluate if possible.- 
A. -200 B. not a real number C. -20 D. 20
Mathematics
Find the foci of the ellipse.
+ 
= 1
A. (-3, -1+ 
), (-3, -1 - 
)
B. (-9, -1), (3, -1)
C. (- 
, -1), (
, -1)
D. (-3 + 
, -1), (-3 - 
, -1)
Mathematics
Find the equation of the hyperbola with the given characteristics.center at the origin, vertices at (9, 0) and (-9, 0), asymptotes y = 
x and y = - 
x
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1
Mathematics