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astra-53 [7]
3 years ago
12

Their sum is − 1/3 and their difference is 18

Mathematics
1 answer:
Rina8888 [55]3 years ago
6 0

Answer:x=53/6 and y=-55/6

Step-by-step explanation:

Let the first number x

Second number b y

Sum of the numbers x+y=-1/3

x-y=18

Solve simultaneously

Using elimination method

We get

2y=-55/3

y=-55/6

Substitute for y in equation 1

x+55/6=18

x=18-55/6

x=53/6

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Solve by addition method <br>3x+y=8 <br>2x-y=7
Vinil7 [7]

Answer:

(3,-1)

Step-by-step explanation:

So we have the system of equations:

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3 years ago
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in a five character password the first two characters must be digits and the last three characters must be letters if no charact
Vilka [71]

Answer:

1,404,000 unique passwords are possible.

Step-by-step explanation:

The order in which the letters and the digits are is important(AB is a different password than BA), which means that the permutations formula is used to solve this question.

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The number of possible permutations of x elements from a set of n elements is given by the following formula:

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In this question:

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1,404,000 unique passwords are possible.

5 0
3 years ago
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