Which method should be used to solve the system? Explain your answer, including a description of the first step.-5x2 - y2 =19x2 + 4y2 =64
What will be an ideal response?
Either method may be used. Elimination may be used since the equations have the same types of terms (x2, y2, constant). If elimination is used, then the first equation should be multiplied by 4 or -4. Substitution may be used efficiently, since a coefficient of the first equation has an absolute value of 1. If substitution is used, then the first equation should be solved for y2.
You might also like to view...
The following data show the diameter D and the height H, both in feet, of certain mature trees. Tree Cottonwood Hackberry Weeping willow Ponderosa pine Douglas fir D 2.4 5.06 6.07 8.06 14.08 H 80.87 113.1 95.05 164.81 223.23? A: Use power regression to model the height as a function of the diameter. Use two digits of accuracy for the coefficient and for the power.B: According to the model, what is the diameter of a mature tree that is 7.89 feet tall? Round your answer to two decimal places.C: If one mature tree has 4 times the diameter of another, how do their heights compare? Round your answer to two decimal places.
What will be an ideal response?
Provide an appropriate response.A horse corral in the shape of a square has an area of 5329 square feet.(i) What is the length of each side of the corral?(ii) What is the perimeter of the corral?
A. (i) The length of each side of the corral is 146 feet. (ii) The perimeter of the corral is 292 feet. B. (i) The length of each side of the corral is 292 feet. (ii) The perimeter of the corral is 5329 feet. C. (i) The length of each side of the corral is 73 feet. (ii) The perimeter of the corral is 292 feet. D. (i) The length of each side of the corral is 73 feet. (ii) The perimeter of the corral is 10,658 feet.
Solve.
= 
A. 
B. - 
C. ?
D. 
Graph the function.A typing service charges $4 plus $4 per page or fraction of a page. Graph the ordered pairs. (pages, cost).
A. 
B. 
C. 
D. 