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alex7881
10.10.2020 •
Mathematics
Find AC.
Ab=25
BC= 8
AC=?
PLEASE HURRY!!
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Ответ:
Step-by-step explanation:
AB = 25
BC = 8
find AC
AB + BC = AC
25 + 8 = AC
AC = 33
Ответ:
Mr. Branson bought 5 children tickets and 4 adult tickets.
Step-by-step explanation:
Let x be number of children tickets
Let y be the number of adult tickets.
So There are total of 9 tickets sold.
x+ y = 9 ------a
Cost of each child ticket = $ 6.50
Cost of an adult ticket = $ 9.25
6.5 x + 9.25 y = 69.5 ----b
Now we have to multiply equation a by -6.5 and add it eq. b as,
- 6.5 x-6.5 y = -58.5
6.5 x + 9.25 y = 69.5
x - term gets cancelled and we can write as,
9.25 y - 6.5 y = 69.5 - 58.5
2.75 y = 11
y =![$\frac{11}{2.75} = 4](/tpl/images/0562/7304/63a23.png)
Plugin y = 4 in eq. a we will get x as,
x + y = 9
x+ 4 = 9
x = 9 - 4 = 5
So there are 5 children tickets and 4 adult tickets.