Answer:
It should be 25.
Step-by-step explanation:
If you divide 750 by 150 you get 5, then you multiply 5 by 5 and get 25.
Answer:

Step-by-step explanation:
we know that
The quadratic equation is equal to
Answer:

Step-by-step explanation:
The given complex number is:

Firstly we can solve (2+3i)(4-7i)(1+i)
= 2(8)+2(-7i)+4(3i)+3i(-7i²)× (1+i)
= (16-14i+12i-21i²i)× (1+i)
Since, i² = -1
= (16-14i+12i-21(-1)i)× (1+i)
= (16-14i+12i+21)× (1+i)
= (29-2i)(1+i)
= 31+27i
Denominator : (1-i²)
= (1-(-1))
= 2

Hence, the correct answer is
.
Answer:
His mistake was he didn't multiply 3(4) when he was opening the parenthesis
Step-by-step explanation:
Correct solution:
12x – 5 = 3(x + 4)
Open parenthesis
12x – 5 = 3x + 12
Collect like terms
12x - 3x = 12 + 5
9x = 17
x = 17/9
x = 9 8/9
Incorrect solution:
12x – 5 = 3(x + 4)
His mistake was he didn't multiply 3(4) when he was opening the parenthesis
12x – 5 = 3x + 4
12x = 3x - 1
9x = -1
r
9x
-
9