You need to find the number of permutations of the 5 beaches, taken 3 at a time:
Answer:
3 x 2 = 6
Step-by-step explanation:
By multiplying both 3 and 2, it equals to 6.
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Answer:
A(8)=32cm
B(9)=36cm
C(10)=40cm
Step-by-step explanation:
let 8:9:10=A:B:C
∑ratios=8+9+10=27
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Step-by-step explanation:
Answer:
100(1.8) – 1.2x > 100
Step-by-step explanation:
Profit = Gain - loss
Gain:
$1.80 for each drink sold
So
G = 1.80d
In which d is the number of drinks sold.
One day, the shop sells 100 drinks.
This means that
and G = 100(1.8).
Loss:
$1.20 every time somebody buys a sandwich
x sandwiches are bought. So
L = 1.2x
Which inequality can you use to find possible numbers of sandwiches that it could sell and still make a profit of more than $100?
P > 100
P = 100(1.8) - 1.2x
So
100(1.8) – 1.2x > 100