Answer:
-7+26i
Step-by-step explanation:
Use FOIL
2•4+2(3i)+5i•4+5i(3i)
Simplify by combining like terms for your answer
8+6i+20i-15
-7+26i
Answer:
$1.2
Step-by-step explanation:
There is 12 inches in a foot, and if he needs twice the amount he already has which is 4 then you would multiply 0.05 times 24 and you would get $1.2
Answer:$18
Step-by-step explanation: You subtract 30 minus 12 and you get 18
2x-8=x+4
Get the x to the other side and the 8 to the opposite
2x-x=4+8
X=12
Step-by-step explanation:
let age of jeff be x, age of keisha be 2x(since keisha is twice as old as jeff) and age of jessica be x+4 (since jessica is 4 years older than jeff)
Now,
x+2x+x+4=60( since sum of all their ages is 60)
or 4x=60-4
or 4x=56
or x=56/4
or x=14
therefore age of jeff=14
age of keisha=2x=2×14=28
age of jessica=x+4=14+4=18
