Write an equation for the ellipse.Foci (0, ±9) and x-intercepts (±12, 0)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: D
Mathematics
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Convert the temperature algebraically. Round the answer to one decimal place.71°F to Celsius
A. 159.8°C B. 70.2°C C. 71.4°C D. 21.7°C
Mathematics
Write the word statement as an equation. Use x to represent the unknown number. Do not solve.The sum of twice a number and 9 is 21.
A. x + 18 = 21 B. 2x + 9 = 21 C. 2(x + 9) = 21 D. 18x = 21
Mathematics
Multiply. Leave the answer in trigonometric form.
?
What will be an ideal response?
Mathematics
Find the product.(4x - 5y)(5x - 10y)
A. 20x2 - 40xy + 50y2 B. 20x2 - 65xy + 50y2 C. 20x2 - 25xy + 50y2 D. 20x2 - 65xy - 65y2
Mathematics