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3 years ago

Write a polynomial of least degree with roots 6 and. -8

Mathematics

1 answer:

____ [38]3 years ago

7 0

Answer:

y = x² + 2x - 48

Step-by-step explanation:

Given the roots of the polynomial are x = 6 and x = - 8 , then the corresponding factors are

(x - 6) and (x + 8) and the polynomial is the product of the factors, that is

y = (x - 6)(x + 8) ← expand using FOIL

y = x² + 2x - 48

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A cyclist rides 225 m each minute.About how long does it take to ride 15km? Show all fo your work

Elan Coil [88]

Speed = 225 metres per minute

Distance = 15 km = 15,000 metres

---------------------------------------------------

s=d/t

ts=d

Therefore: t=d/s

--------------------------------------------------

Time = Distance / Speed

Time = (15,000 metres) / (225 metres per minute)

--------------------------------------------------

Let's work it out:

$Time=\frac { 15,000\quad metres }{ \frac { 225\quad metres }{ 1\quad minute\left( s \right) } } \\ \\ =\frac { 15,000\quad metres }{ 1 } \cdot \frac { 1\quad minute\left( s \right) }{ 225\quad metres } \\ \\ =\frac { 15,000 }{ 225 } minutes$

$\\ \\ =\frac { 200 }{ 3 } minutes\\ \\ \frac { 200 }{ 3 } minutes\quad =\quad 66\quad minutes,\quad 40\quad seconds$

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3 years ago

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arsen [322]

Jay ran 2650 yards and Cadi ran 1320 yards.

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2 years ago

Evaluate the expression when a = -6 and x =7 a-6x

IrinaVladis [17]

Answer:

-48

Step-by-step explanation:

you put the -6 in the place of a, and put 7 in the place of x. you get -6-6x7. 6x7 is 42. -6-42 is -48.

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2 years ago

A bank teller provides the balance of Halle’s account before and after she withdraws some money. Before: $500 After: $327

vredina [299]

That means she withdrew 173 dollars

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2 years ago

Having trouble understanding....please help me.

Svetlanka [38]

Answer:

3:2

Step-by-step explanation:

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2 years ago