Two sorts
creatures
On Mars there are two sorts of creatures
Zerts have 4 legs and Zios have 7 legs.
Jacob the astronaut looked out of his space
ship and saw 55 legs.
• How many Zerts might there be ?
• How many Zios might there be?
•How many creatures might there be altogether?

There are two solutions:

Explanation:

This problem has a second question that is missing: Do you think there are any different answers?

You can create a system of two equations.

1. Name the variables:

2. Translate the verbal statements into algebraic expressions:

3. Solution

Since there is one equation and two variables there could be many possible solutions, to the equation. But since x and y are restricted to positive integer numbers, the situation may be different.

You can test some numbers.

First, realize that the greatest possible value of y is when x = 0. Thus 7y has to be less than 55. The multiples of 7 that are less than 55 are 14, 21, 28, 35, 42, and 49.

Thus, the only possible values of y are 1, 2, 3, 4, 5, 6, and 7.

If y = 1: 4x = 55 - 7(1) = 48 ⇒ x = 48/4 = 12. Thus, this is your first solution: (12,5).

If y = 2: 4x = 55 -7(2) = 41. Since 41 is not muliple of 4. This is not a solution.

If y = 3: 4x = 55 - 21 = 34. 34 is not a multiple of 4. Not a solution.

If y = 4: 4x = 55 - 28 = 27. Not a solution, either.

If y = 5: 4x = 55 - 35 = 20 ⇒ x = 20/4 = 5. This is a second solution: (5,5)

If y = 6: 4x = 55 - 42 = 13. Not a multiple of 4.

If y = 7: 4x = 55 - 49 = 6. Not a multiple of 6.

There are two solutions:

she is later raised by him and his wife, madame valmonde, who sees her as gift from god, as the couple cannot have their own children. later, desiree falls in love with a wealthy man, armand aubigny, and they get married.

i don't see anything attached can you attach something?