The farm animals have been sorted into cows and chickens. the number of chickens is two less than five times the number of cows. the animals are 80% chickens. how many cows are there?
a. 1
b. 2
c. 3
d. 4

Option b

Step-by-step explanation:

Let's call x the number of cows and call y the number of chickens. Then we know that:

The number of chickens is two less than five times the number of cows. This means that:

We also know that:

The animals are 80% chickens.

This means that:

To find the number of cows we must solve the system of equations:

Replace the first equation in the second equation:

Now solve for the variable x

5x+2x=49

7x=49

x=7. 35 apples

15

step-by-step explanation:

we are given the following expression and we are to solve it and find the product:

-13 × (-5)

solving the given expression in the standard order of solving a mathematical expression, beginning with the opening of brackets and then multiplying the terms and changing their signs.

-3 × -5 = 15 (answer is positive because when negative is multiplied with negative, it gives a positive answer)