X+3y=7
x-3y=1
add them together
x+3y=7
<u>x-3y=1 +
</u>2x+0y=8
2x=8
divide 2
x=4
subsitute
x+3y=7
4+3y=7
subtract 4
3y=3
divid 3
y=1
x=4
y=1
answer is A
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Answer:
Enter the amount of money you are investing. Start Year. Enter the year in which the money was first invested. End Year. Enter the future year on which you want to base your calculation. Annual Interest Rate. Enter the annual compound interest rate you expect to earn on the investment. The default value (2.0%) equals the rate currently paid on five-year Guaranteed Investment Certificates
Step-by-step explanation:
Answer:
≥ closed dot
< open dot
≤ less than or equal to closed dot
There are the missing blanks
Answer:
Step-by-step explanation:
÷ 
= 
= 
= 1
Use KCF method,
Keep the first number.
Change the division to multiplication
Flip the second number
Step-by-step explanation:
z^7/z^-14=21
z^21=21
