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Sphinxa [80]
3 years ago
7

Please help :( i don’t understand!

Mathematics
1 answer:
Nikitich [7]3 years ago
8 0

Answer:

absolute error: 7 pounds

percent error:4.9%

Step-by-step explanation:

Absolute error:

150-143=7 pounds

Percent error:

=l\frac{150-143}{143} l x 100

=l\frac{7}{143}l x 100

=0.04895x100

=4.895...

=4.9%

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Answer:

B. two

explanation:

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3 years ago
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The product of 4 and a number f decreased by 2 is 15
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Answer:  The number is:  "2 " .

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Step-by-step explanation:

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Write the expression; which is an equation, as follows:

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    " 4x − 12 = 2(-x) " ;  in which "x" represents "the number for which we shall                                       solve" .

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Note:  

If the "number" = "x" ;  the "opposite of the number"  =  " -x " ;

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Rewrite as:  " 4x − 12 = -2x " ;

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    →  Add "12" ; & add "2x" ; to EACH SIDE of the equation:

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          to get:    6x  = 12  ;

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Now, divide each side of the equation by "6" ;

    to isolate "x" on one side of the equation; & to solve for "x" ;

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                        6x / 6  =  12 / 6 ;

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Answer:  The number is:  "2 " .

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Let us check our answer, by plugging in "2" for "x" in our original equation:

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       →   " 4x − 12 = 2(-x) " ;

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7 0
3 years ago
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Step-by-step explanation:

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Answer:

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