Hey :) it’s (2,5) it’s C !!
Answer:
i) 28 - 30i
ii) 36 + 28i
Step-by-step explanation:
i) x = 6 + i ⇒2x = 2(6 + i) = 12 + 2i
z = 4 - 8i ⇒ 4z = 4(4 - 8i) = 16 - 32i
2x + 4z = (12 + 2i) + (16 - 32i) = 28 - 30i
ii) w = -1 + 5i and z = 4 - 8i
w × z = (-1 + 5i)(4 - 8i) = -4 + 8i + 20i - 40⇒collect like terms
w × z = -4 + 28i - 40
∵
∴w × z = -4 + 28i - 40(-1) = -4 + 28i + 40 = 36 + 28i
Answer:
a = 3
Step-by-step explanation:
Factorise both expressions\x² - x - 6 = (x - 3)(x + 2)
x² + 3x - 18 = (x - 3)(x + 6)
Thus both expressions have a common factor of (x - 3) , thus
a = 3
Answer:
28
Step-by-step explanation:
so there are 7 days in a week and she had 4 stickers left so 7 x 4 = 28.
Answer:
144 ft^2
Step-by-step explanation:
It is the same as the area of a single triangle with a base of 18 ft and a height of 16 ft. The formula is ...
A = (1/2)bh
= (1/2)(18 ft)(16 ft) = 144 ft^2
The shaded area is 144 ft^2.