calculating each of the products
noting that i² = (√- 1 )² = - 1
(1 + 2i)(8i) ( distribute by 8i )
= 8i + 16i² = - 16 + 8i ← complex number
(1 + 2i)(2 - 5i) ( expand using FOIL )
= 2 - 5i + 4i - 10i²
= 2 - i + 10 = 12 - i ← complex number
(1 + 2i)(1 - 2i) ( expand using FOIL )
= 1 - 2i + 2i - 4i²
= 1 + 4 = 5 ← real number
(1 + 2i)(4i) ( distribute by 4i )
= 4i +8i² = - 8 + 4i ← complex number
(1 + 2i)(1 - 2i) is the only product which results in a real number
Answer:
c) -7/2
Step-by-step explanation:
14/-4= -3.5
Answer:
I don't know what happened to your profile picture... I don't know if mods can remove/change pfps, but if so, then that could be the case -- especially if your pfp challenged Brainly's rules and community guidelines. Then again, it could have just been you...
Step-by-step explanation:
Answer:
c) bajo: $1.62; mediano: $1.80; grande: $2.03
Step-by-step explanation:
Insert numbers from the table into a linear equation (ignore time column) and use Cramer's Rule.
55x+53y+54z=299.12
17x+22y+25z=117.89
30x+23y+29z=148.97
x, bajo = 1.62
y, mediano = 1.8
z, grande = 2.03
So the equation for the area of a circle is
First to find the radius, you would need to divide the diameter, 26, by half, which in this case its 13.
Replace the r variable with 13 and solve:
