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3 years ago

What are the roots of y = x2 – 3x - 10? 0 -3 and -10 0-2 and 5 2 and -5 3 and 10

Mathematics

1 answer:

nata0808 [166]3 years ago

5 0

Answer:

roots: -2 and 5

Step-by-step explanation:

What are the roots of y = x2 – 3x - 10?

we see...

factor -10 .... using the X-method.

-10 = 2 * -5

where 2 + -5 = -3

y = (x +2)(x - 5)

roots are -2 and 5

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9514 1404 393

Answer:

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perimeter: 124.8 cm

Step-by-step explanation:

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The semicircular ends, together, make a complete circle of radius 10 cm.

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Then the whole perimeter is ...

P = 62.8 cm + 21 cm + 10 cm + 21 cm + 10 cm = 124.8 cm

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Note that we have used 3.14 for pi. If you use a more exact value, your answers will be slightly different.

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