Find the sum of the first 13 terms of the arithmetic progression: 3, - 4, - 11,...
a. - 39
b. - 500
c. - 507
d. - 1,521
c. - 507
Mathematics
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Solve.x - 3y + 3z = 4y + 4z = 0 z = -2
A. (34 , 8, -2) B. (-31 , -7, -2) C. (-34 , -8, -2) D. (31 , 7, -2)
Mathematics
Solve the quadratic equation by any method.x2 = 36
A. -6, 6
B. 0, 6
C. 6
D. -6 + i
Mathematics
Find the exact value. If the value of the function is not defined, write undefined.cos (-4?)
A. -1 B. 0 C. Undefined D. 1
Mathematics
Determine which numbers in the set are irrational numbers.
a. 
b. 
c. 
d. 
e. 
Mathematics