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Nady [450]
3 years ago
7

Anyone pls help me in qn 11 in simultaneous equations

Mathematics
1 answer:
Nataly [62]3 years ago
4 0

Answer: 19 cents

Step-by-step explanation:

Let's say that the cost of a lemon be L and the cost of an orange is O

We get the equation

4L + 3O = 5.45

7L + 4O = 9.30

The first equation can be made into the equation

28L + 21O = 38.15

And the second be made into

28L + 16O = 37.20

The second equation - The first question

5O = 0.95

O = 0.19

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\textbf{ \underline{Using identity: }} \underline{ {(a  -  b)}^{2}  =  {a}^{2}  - 2ab +  {b}^{2} }\\  \\  {x}^{2}  - 10x + 25 \\  = {(x)}^{2} - 2 \times 5 \times x +   {(5)}^{2}  \\ =  {(x - 5)}^{2}
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