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Minchanka [31]
3 years ago
6

Evaluate each expression, 11,12,13

Mathematics
2 answers:
mote1985 [20]3 years ago
8 0

For this case we have the following:


a) \frac{60}{-3}

We look for a number that multiplied by the denominator, resulting in the numerator. When multiplying (-20) * (3) = 60, we get the numerator. Thus, the result is\frac{60}{- 3} = - 20


b) 6 - (- 3)

The law of signs states that:


+ * + = +

+ * - = -

- * + = -

- * - = +

According to the fourth case we have to:


6 - (- 3) = 6 + 3 = 9


c)(- 5) ^ 2 = (- 5) (- 5) = 25

For this case we apply the fourth case of the law of signs mentioned above. By power properties:


(a) ^ 2 = (a) (a)

Answer:


Part a: -20


Part b: 9


Part c: 25

ExtremeBDS [4]3 years ago
3 0
1. -20
2. 9
3. -25
Hope this helps
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