Evaluate the expression

-5

Step-by-step explanation:

We are given the expression:

and asked to evaluate.

We must solve this expression according to PEMDAS: Parentheses, Exponents, Multiplication, Division, Addition and Subtraction.

Solve inside the brackets first. Multiply 5 and -3.

5 * -3= -15

Add -5 and -15.

-5+-15= -20

Finally, multiply 1/4 and -20, or divide -20 by 4.

1/4 * -20 = -5      OR       -20/4= -5

When evaluated, the expression 1/4 [ -5 +5(-3)] is equal to -5.

answer: c.  

step-by-step explanation:

mixtures containing substances that get attracted to magnet can be separated using a magnet. we can separate iron from a mixture of sand and iron, as only iron attracts to the magnet.