Find an equation for the ellipse described.Center at (0, 0); focus at (0, -4); vertex at (0, 8)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: A
Mathematics
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Simplify. Write your answer in the form a + bi, where a and b are real numbers.(15 + 7i) - (5 + 4i)
A. 10 + 3i B. -10 + 3i C. -10 - 3i D. 10 - 3i
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Provide an appropriate response.A student turned in the following work in multiplying two numbers on a test paper. Can you decide what was done incorrectly and then give the correct answer?25.6×2.41024512 614.4
What will be an ideal response?
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Convert. Round to the nearest tenth unless otherwise indicated.The oven temperature reached 157°C. What is this temperature in degrees Fahrenheit?
A. 156.3°F B. 340.2°F C. 119.2°F D. 314.6°F
Mathematics
Solve the equation.
+ 
= 4
A. {
, -2}
B. {2, -2}
C. {0}
D. {-2}
Mathematics