Provide an appropriate response.Why is scientific notation used?
What will be an ideal response?
Answers will vary. One possible explanation: Numbers occurring in science are often extremely large or extremely small. Because of the difficulty of working with many zeros, scientists often find it easier to express such numbers with exponents.
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Solve the system by the addition method. Be sure to check all proposed solutions. x + 9y = 15-3x + 8y = 25
A. {(-4, 3)} B. {(3, 3)} C. {(-3, 2)} D. ?
Decide if a triangle exists that satisfies the given conditions.a = 49, b = 15, ? = 50°
A. Yes B. No
Determine the slope and the y-intercept for the linear equation. Graph the line.y = 
x - 1
A. m = - 
, y-intercept: (0, -1)
B. m = 
, y-intercept: (0, -1)
C. m = - 
, y-intercept: (0, 0)
D. m = 
, y-intercept: (0, 0)
Find the foci of the ellipse.
+ 
= 1
A. (-7, -5), (9, -5) B. (-5, -5), (7, -5) C. (-9, -5), (11, -5) D. (-5, -5), (-5, 7)