2 years ago

Your grandfather gave you $1.65 with

Mathematics

2 answers:

Lelu [443]2 years ago

5 0

Answer:

$1.98

Step-by-step explanation:

1.65/5=0.33

1.65+0.33=1.98

check: 1.98/6 =0.33

0.33x5=1.65

Alex2 years ago

3 0

Answer:

$1.98

Step-by-step explanation:

1.65 is 1.65/1 in a fraction, then you have to divide 1.65/1 by 5/6.

1.65/1 divide by 5/6

1.65 x 6= 9.9

1 x 5= 5

9.9/5

=1.98

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OLga [1]

Answer:

-22+27i

Step-by-step explanation:

$i = \sqrt{ - 1} \\ (3 - 4i)( - 6 + i) \\ = (3 - 4 \sqrt{ - 1} )( - 6 + \sqrt{ - 1} ) \\ = 3( - 6 + \sqrt{ - 1)} - 4 \sqrt{ - 1} ( - 6 + \sqrt{ - 1} ) \\ = - 18 + 3 \sqrt{ - 1} + 24 \sqrt{ - 1} - 4 \\ = - 22 + 27 \sqrt{ - 1} \\ putting \: \: \: \sqrt{ - 1 } = i \\ = - 22 + 27i$