The answer is A) -23
A is a 1x3 Matrix while B is 3x1 Matrix. Since A has the same number of rows as that of the number of columns of B, they can be multiplied. A has 1 row and B has 1 column. So, their products is a 1x1 Matrix.
Simply, the operation is:
(3)(-1) + (-2)(4) +(6)(-2) = -23
0.7t = 1.7+3.2
0.7t = 4.9
0.7t/0.7 = 4.9/0.7
t=7
hope it helps
Answer:
When takiing the 2a to the other side she forgot to change sign:
8(−a+4)=−6a−8+8a
−8a+32=2a−8
−10a=−40
a = 4
The answer is C
Answer:
3
Step-by-step explanation:
If 75% liked skating, then 25% did not
so 25% of what is 35
0.25x = 35
x = 35/0.25
x = 140...so there is a total of 140 students
75% of 140 =
0.75(140) = 105...so 105 students liked skating
