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jeka57 [31]
3 years ago
9

-1.68j+1.24=13 need help thanks

Mathematics
2 answers:
s344n2d4d5 [400]3 years ago
6 0

Answer:

-7

Step-by-step explanation:

-1.68j+1.24=13

-1.68j=13-1.24

-1.68j=11.76

j=11.76/-1.68

j=-7

faltersainse [42]3 years ago
3 0

Hi there! Hopefully this helps!

-----------------------------------------------------------------------------------------------------------

Answer: j = <u>-7</u>

You can also <u>rewrite</u> the equation(replace "j" with the answer):

-1.68<u>(-7)</u> + 1.24 = 13.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

<em>How I solved it:</em>

-1.68j + 1.24 = 13.

<em>We </em><u><em>subtract 1.24</em></u><em> from </em><u><em>both</em></u><em> sides.</em>

-1.68j = 13 - 1.24

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

-1.68j = 13 - 1.24

<em>We </em><u><em>subtract 1.24 from 13</em></u><em> to get 11.76.</em>

-1.68j = 11.76

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

-1.68j = 11.76

<em>We then </em><u><em>divide both sides</em></u><em> by -1.68.</em>

j = \frac{11.76}{-1.68}

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  

<em>Expand </em>\frac{11.76}{-1.68}<em> ≈ -7 by </em><u><em>multiplying both the numerator and the denominator</em></u><em> by 100.</em>

j = \frac{1176}{-168}

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

<em>Divide 1176 by -168 to get -7.</em>

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