(2-5i)(4+7i)=2(4+7i)-5i(4+7i)=8+14i-20i-35i²
recall that i²=-1,
8-6i+35=43-6i
43-6i is the final answer
Answer:
In addition, from the response shown, using a graphical calculator brings the following benefits:
1) You can write the system of linear equations as big as you want. This is: systems 3 * 3, 4 * 4, 5 * 5.
2) The response to systems of equations greater than 2 * 2 can be complicated when you graph the solution, therefore, the graphing calculator can be much more efficient in these cases.
3) You can write the linear equations in any way. Resolving by hand you should probably rewrite the system of equations to find the solution.
Step-by-step explanation:
5 1/5% of 99 quarts= 5.148 quarts
Answer:
should be 17
Step-by-step explanation:
find what x is by setting the equations equal to each other. (x=8) Just plug 8 into the equation to get the answer: 17
Answer:
43 hundreds
Step-by-step explanation:
There are 40 hundreds in 4000.
4000/100=40.
Afterwards, you would add the other 3 hundred to the answer which would make the answer 43 since 300/100 is equal to 3, and 40 + 3 = 43
The remainder of the 76 left would be 7 tens and 6 ones also if you wanted to know.
10 one hundreds = 1000
3 one hundreds = 300
