The multiplicative inverse of a number x is a number y such that their product xy is 1.
So, we want a number such that
Divide both sides by 10:
Answer:
399 minutes a month
Step-by-step explanation:
As I understand the question the answer would, in other words, be how many minutes you can long-distance call with the economy plan for under $30.
The unit ratio is 5 cents per minute, which equates to 20 minutes worth of call time for one dollar (100/5).
The economy plan is $20 cheaper than the deluxe plan. $20 spent on long-distance calling gets you 400 mintues, but the question asks for an integer that would still leave remaining money.
Therefore the answer is 399 minutes of long-distance calling, which would leave five unspent cents.
Step-by-step explanation:
<u>Substitute x = 12 and y = 4 into the equations:</u>
<u>1.</u>
Incorrect.
<u>2</u><u>.</u>
Incorrect.
<u>3</u><u>.</u>
Incorrect.
<u>4.</u>
Incorrect.
All equations are incorrect when x and y are substituted.
Well you have to subtract. i think you have to do 15-10% which is 14.9
Answer : 1,878.50 - 1,075.50= 803 then the second step you keep subtracting 73 to 803 until you get 0 and you get 11
