Answer:
three boys shared D 10,500.00 in the ratio 6:7:8.find the largest share.
I think maybe it’s c? Sorry if I’m wrong
Answer:
21cm, 24cm and 27cm
Step-by-step explanation:
7+8+9=24
72/24 = 3
7X3 =21
8x3 = 24
9x3 = 27
Answer:
A.
Step-by-step explanation:
C and D do not create any x² terms when doing the multiplications. so, they are out.
B stands for (a+b)×(a-b) = a² - b².
so, that would give us a "-4" at the end and is not fitting to the "+4" term at the end of the original expression.
that leaves us with A.
let's verify :
(4x+2i)(4x-2i)
it follows the same rule as B :
(a+b)(a-b) = a² - b²
a = 4x
b = 2i
you remember, i = sqrt(-1).
so, we get
(4x)² - (2i)² = 16x² - 4×(sqrt(-1))² = 16x² - 4×(-1) = 16x²+4
bingo !