4) Which numerical expression equals − 1? A) − 1(1− 1) B) − (− 1)(− 1) C) (− 1) + 1 − 1 (− 1) D) − (− 1) − (− 1)(− 1)

A) − 1(1 − 1) = − 1 · 0 = 0

B) −(−1)(−1) = −1

C) (−1) + 1 − 1(−1) = 0 −(−1) = 0 + 1 = 1

D) −(−1) − (−1)(−1) = 1 − 1 = 0

A and D are equal.

0

Step-by-step explanation:

muyb ajo

step-by-step explanation:

jegosu

total amount to be paid = $19.5

step-by-step explanation:

given ,

original price = $25.99

discount = 25%

discount amount = 25% of original price

discount amount = 25/100   * 25.99

discount amount = $6.49

hence , the total amount to be paid = original price - discount amount

                                                            = $25.99 - $6.49

                                                            =$19.5

total amount to be paid = $19.5