![Mathematics](/tpl/images/cats/mat.png)
Mathematics, 09.02.2021 16:20, breanna7667
Q2 - With decimals
Work these simultaneous equations out
on paper and write down your answers.
The cost of 8 CDs and 7 DVDs is
$113.50.
The cost of 12 CDs and 8 DVDs is
$153.
a =
10a + 3b = 31
15a + 4b = 45
b =
m =
4m + 10n = 83
9m + 6 = 96
n =
p =
8p + 59 = 27
12p + 40 = 51
All the CDs are the same price and
all the DVDs are the same price.
q=
Find the cost of one of each.
6S + 7t = 42
S =
1 CD is $
8s + 3t = -1
t =
[8]
[4]
1 DVD is $
![answer](/tpl/images/cats/otvet.png)
Answers: 3
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Do you know the correct answer?
Q2 - With decimals
Work these simultaneous equations out
on paper and write down your answers...
on paper and write down your answers...
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