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liloleliahx2
13.05.2021 •
Mathematics
Ayudenme porfavor
Factoriza
1. 2−10+21
2. 2+5−24
3. 2−−30
4. 52−10−75
5. 23+102−48
6. 33−392−90
Solved
Show answers
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Ответ:
1. 13
2. -17
3. -28
4. -33
5. 77
6. -449
Step-by-step explanation:
Mark as Brainllest
Ответ:
a=number of tickets sold after
cost of a ticket=number of tickets times cost per ticket
beforecost=39.95b
aftercost=54.95a
total cost=925000
39.95b+54.95a=925000
total number tickets=20000
b+a=20000
we have
39.95b+54.95a=925000
b+a=20000
multiply second equation by -39.95 and add to first equatin
39.95b+54.95a=925000
-39.95b-39.95a=-799000 +
0b+15a=126000
15a=126000
divide bot sides by 15
a=8400
sub back
b+a=20000
b+8400=20000
minus 8400 both sides
b=11600
11,600 tickets sold before
8400 tickets sold after