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3 years ago

13

a plumber needs to replace 20 feet of copper piping. When he gets to the supply store, the lengths are given in meters. How many

meters of piping does he need to purchase

1 answer:

larisa [96]3 years ago

7 0

6 meters. You just need to switch the feet to meters.

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Answer:

Part 1) In the procedure

Part 2) In the procedure

Step-by-step explanation:

Part 1) Observing the graph

The roots are x=-1/2 and x=4

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That's why Sheldon immediately realizes Howard's solution is incorrect

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

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Howard's error is in this step, is wrong with the sign of the number 7, is positive instead of negative

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$x=\frac{7(+/-)9}{4}$

$x=\frac{7(+)9}{4}=4$

$x=\frac{7(-)9}{4}=-1/2$

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