Answer:
Step-by-step explanation:
The given equations are:
2a+7b=0 and 3a-5b=31
Statement Reason
1. 10a+35b=0, 21a-35b=217 (Multiply first equation by 5 and second by 7)
2. 31a=217 (Adding both the equations)
3. a=7 (Dividing both sides by 31)
4. 2(7)+7b=0 (Substituting a=7 in first equation)
5.14+7b=0 (solving step 4)
6. 7b=-14 (Subtracting 14 on both sides)
I am assuming that you mean
22
, which is 22.25
and
11
, which is 33.75
so each share gives you a profit of 33.75-22.25=11.5
and you bought and sold 25 of them, so your profit is 21.5*25=287.50, the last answer!
Y=-2x+1 would be your answer! have a great day!
Answer:
a and b there is no a and b but x would = 7.5
Step-by-step explanation:
Given:
Runfast = 25 + 10g
BA&D = 18 + 15g
Runfast = 35 per month
35 = 25 + 10g
35 - 25 = 10g
10 = 10g
10/10 = g
1 = g
BA&D = 33 per month
33 = 18 + 15g
33 - 18 = 15g
15 = 15g
15/15 = g
1 = g
If g = 2;
Runfast = 25 + 10(2) = 25 + 20 = 45
BA&D = 18 + 15(2) = 18 + 30 = 48
Based on my computation, if the gig of data is only equivalent to 1g then BA&D is cheaper. However, if 2gig or above is used, then Runfast is cheaper.