3 years ago

Two- one foot rulers laid end to end on reach how many inches?

Mathematics

1 answer:

frozen [14]3 years ago

5 0

24.

1 ruler is 12 inches.

2 rulers is 24 becuase

12 + 12 is 24.

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natita [175]

Answer:

The width of the frame is equal to $8\ cm$

Step-by-step explanation:

Let

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we know that

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$4x^{2}-120x+704=0$

Simplify

$x^{2}-30x+176=0$

The formula to solve a quadratic equation of the form $ax^{2} +bx+c=0$ is equal to

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in this problem we have

$x^{2}-30x+176=0$

$a=1\\b=-30\\c=176$

substitute in the formula

$x=\frac{30(+/-)\sqrt{(-30)^{2}-4(1)(176)}} {2(1)}$

$x=\frac{30(+/-)\sqrt{196}} {2}$

$x=\frac{30(+/-)14} {2}$

$x=\frac{30+14} {2}=22\ cm$ ----> this solution is not logic

$x=\frac{30-14} {2}=8\ cm$

The width of the frame is equal to $8\ cm$

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