The answer is 9.3, divide the distance between town A&B by the speed of the automobile. 420/45= 9.3 hours.
Answer:
I think the answer is 19
Step-by-step explanation:
Answer:
3 ±i√39
------------
4
Step-by-step explanation:
The coefficients of this quadratic equation are a = 2, b = -3 and c = 6. Thus, the discriminant is b^2 - 4(a)(c), or (-3)^2 - 4(2)(6), or 9 - 48, or -39.
Thus, the roots are:
-(-3) ± i√39 3 ±i√39
x = ------------------- = ----------------
2(2) 4
This corresponds to the first of the four given answers.
Answer:
Step-by-step explanation:
a) False. A rectangular matrix cannot have a determinant only square matrices can have determinants
b) False. Only square matrices have determinants and non square matrices do not have
c) True.
d) False. If it is a square matrix and every entry is 0 then determinant =0
e) False. If it is a square matrix determinant =0 since when two rows are identical the determinant value is 0.
