Evaluate the following expression using the values given: Find 3x − y − 3z if x = −2, y = 1, and z = −2.

1 answer:

4 0

The answer is -1. You can multiply 3 by -2 which is -6. Then y is, obviously, 1. 3z would equal -6 because 3 times -2 is -6. The final equation is: -6-1-(-6. -6 minus 1 1is -7. Then -7 minus -6 is -1 because a negative minus a negative will be a negative.

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Fill in the gaps in this sequence: -8, -19, -30, _ , _.<br> (Geometric and arithmetic sequences)

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<u>Step-by-step explanation:</u>

Here we have the following sequence :

-8, -19, -30, _ , _

First term of sequence is -8 .
Second term of sequence is -19 : $-8-11 = -19$
Third term of sequence is -30 : $-19-11 = -30$
Fourth term of sequence is : $-30-11 = -49$
Fifth term of sequence is : $-49-11 = -60$

Following sequence was an AP( Arithmetic Progression ) with first term as -8 i.e. $a = -8$ and common difference $d = -11$ having general equation as : $-8 -11n$ .