(5 + i)(4 - 2i)
20 - 10i + 4i - 2i²
20 - 6i - 2(-1)
20 - 6i + 2
20 + 2 - 6i
22 - 6i
45 mins
Step-by-step explanation:
A quarter of an hour is 15 mins. If jasper walks 1/2 a mile in 15 mins then in 1.5 miles is 3 times that. 15x3 is 45.
Let...
x= kg of green tea
We can make an equation from the information given.
3.5(18)+2.6x=2.9(x+18)
63+2.6x=2.9x+52.2
10.8=0.3x
x=36
answer: 36 kg of green tea
I will also solve your first question.
2/3 is what percent of 1/4? 1/6?
Let's turn this question into an equation where we can solve for the unknown. Don't worry about the percent conversion yet.
2/3=1/4x
x=8/3
Now we can convert 8/3 to 800/3 %.
We solve the second part of the question similarly.
2/3=1/6x
x=12/3=4=400%
answer: 800/3% and 400%
