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3 years ago

What are the roots of the polynomial equation? x2+11x−80=0

Mathematics

2 answers:

dolphi86 [110]3 years ago

5 0

The roots would be x=5,16

tino4ka555 [31]3 years ago

5 0

Answer: The roots of the polynomial equation are 5 and -16.

Step-by-step explanation:

Since we have given that

$x^2+11x-80=0$

So, we need to find the roots of the polynomial equation:

We will use "Split the middle term":

$x^2+11x-80=0\\\\x^2+16x-5x-80=0\\\\x(x+16)-5(x-16)=0\\\\(x-5)(x+16)=0\\\\x=5,-16$

Hence, the roots of the polynomial equation are 5 and -16.

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Now for the second car, it will charge 75% of the first car.

So the charges for second car

=$[ $(3+2(t-1))(75/100)$ ]

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There are 3 cars. That parking charges for the third car is also 75% of the first car.

So for third car the parking charges are same as for the second car.

Total parking charges for 3 cars

= $ $(3+2(t-1))+(0.75(3+2(t-1))+(0.75(3+2(t-1))$

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We have got the required answer here.

The correct option is option C.

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3 years ago

In the diagram below, what is the relationship between the number of triangles and the perimeter?

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The perimeter "P" is equal to the length of the base of one triangle multiplied by the "n" number of triangles in the figure plus two times the length of another side. The equation for the perimeter is P = 5n + 14.

We are given triangles. The triangles are arranged in a certain pattern. The length of the base of each triangle is equal to 5 units. The length of the other two sides is 7 units each. We conclude that all the triangles are isosceles. We need to find the relationship between the number of triangles and the perimeter of the figure. Let the perimeter of the figure having "n" number of triangles be represented by the variable "P".

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To learn more about perimeter, visit :

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