H= Alice
Y= Peter
H-6=Y/2
10-6= 4
4*2=8
Peter=8
Alice=10
The given expression becomes undefined when y=5 or y = -3. The answer is option D.
Step-by-step explanation:
The value of the given expression becomes undefined when the denominator equals 0.
Hence to find the value of y which makes the expression undefined, we can equate the value of the denominator to zero and solve it .
Step 1
Equate the denominator to 0.
y^{2} - 2y -15 = 0
Step 2
Solve the above equation to get the value of y.
y^{2} - 2y -15 = 0
=> (y-5)(y+3) =0 [ Roots of the quadratic equation]
=> y = 5 or y = -3.
Hence when y = 5 or y = -3 the denominator becomes 0, which makes the expression (2y+7)/0 and hence it is undefined.
Step-by-step explanation:
8t+1=17
8t=17-1
8t=16
t=2
12-4t=36
4t=12-36
4t=-24
t= -6
Because both 7 and 4 are positive numbers, the minimum value would be when y and x are both at the minimum. In this case, x=-4, y=-6
7(-4)+4(-6)=-52