Solve the equation.
+ 
= 
A. -3
B. 5
C. 45
D. 1
Answer: B
Mathematics
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Find the standard-form equation of the ellipse centered at the origin and satisfying the given conditions.An ellipse with vertices (±8, 0) and foci at (±3, 0)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics
Use the given conditions to write an equation for the line in point-slope form.Slope = 4, passing through (-2, 5)
A. x - 5 = 4(y + 2) B. y - 5 = 4(x + 2) C. y = 4x + 13 D. y + 5 = 4(x - 2)
Mathematics
Write the phrase as a variable expression. Use x to represent "a number."The sum of a number and 100
A. 100 B. x + 100 C. 100x D. x - 100
Mathematics
Solve the logarithmic equation for x. Give an exact solutionlog7 8 + log7 x = 1
A. 
B. 
C. 
D. 
Mathematics