3 years ago

The question is the picture

Mathematics

1 answer:

mezya [45]3 years ago

4 0

Answer:

Step-by-step explanation:

Hope this helps u!!

note :if u change divide sign to multiplication sign then do the reciprocal

for eg:

3/4÷3/100

then write,

3/4*100/3

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Sunny_sXe [5.5K]

Answer:

18π

Step-by-step explanation:

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3 years ago

The sum of two numbers is 39. The second number is 3 more than three times the first number. Let x represent the first number an

GenaCL600 [577]

Answer:

$The\: value \:of\: the\: first\: number\:is\:9$

Step-by-step explanation:

$We\:have\:a\:system\:of\:equation:\\\left \{ {{x+y=39} \atop {3x+3=y}} \right. \\\Leftrightarrow \left \{ {{39-x=y} \atop {3x+3=39-x}} \right. \\\Leftrightarrow \left \{ {{39-x=y} \atop {4x=36}} \right. \\\Leftrightarrow \left \{ {{y=39-9} \atop {x=9}} \right. \\\Leftrightarrow \left \{ {{y=30} \atop {x=9}} \right. \\\Rightarrow x=9$