Verify which of the following are identities. 1) 14 (sin 9 + cosa 9 + tan 9) = 14 tan a csc 9
1- cosa
2) 8
= 8 cota
cose
a.
None of the equations are identities.
b. Only the first equation is an identity.
c. Only the second equation is an identity.
d. Both the equations are identities

Suppose a least-squares regression line is given by modifyingabove y with caret equals 4.302 x minus 3.293. what is the mean value of the response variable if xequals20?

One side of a rectangle is 7 feet shorter than seven times the other side. find the length of the shorter side if we also know that the perimeter of the rectangle is 306 feet.

Me solve this problem, and someone clearly explain to me how to solve it.1.) use the value of the discriminant to determine if the given trinomials has 2 real solutions, 1 real solution, or no real solutions.a.  x2  − 4x  − 7 = 0b. 4r2  + 11r  − 3 = 0c. 3m2  + 7 = 0d.  t2  + 2t  + 1 = 0