There are 16 animals in a farmhouse. Some of them are chickens and the others are cows. Altogether, these animals have 60 legs. How many chickens and how many cows are in the farmhouse? -- Which two equations would you use to solve this problem? Chickens have 2 legs and cows have 4 legs.

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There are 2 chickens and 14 cows.

Equations:

2x + 4y = 60

x + y = 16

Step-by-step explanation:

2x + 2y = 32

Substituting now:

32 + 2y = 60

2y = 28

y = 14

x = 16 - 14 = 2

b. 24 mm

step-by-step explanation:

use the pythagorean theorem.

a^2 + b^2 = c^2

a^2 + 7^2 = 25^2

a^2 + 49 = 625

a^2 = 576

a = 24

answer: b. 24 mm

step-by-step explanation:

i think you should think about the question and not look online.