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3 years ago

What are the roots of the quadratic function in the graph? -15 -5,3 -5,-3 -3,5

Mathematics

2 answers:

KengaRu [80]3 years ago

6 0

The roots are -5 and 3

nasty-shy [4]3 years ago

4 0

Answer:

-5 and 3

Step-by-step explanation:

The roots of a quadratic function are also called the x intercepts.

The x intercepts are found by looking where where the quadratic equation crosses the x, or horizontal axis.

In this case, the quadratic equation crosses the x axis at (-5,0) and (3,0).

Therefore, our roots are -5 and 3

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A company manufactures fuel tanks for cars. The total weekly cost (in dollars) of producing x fuel tanks is given by ... C(x) =

AlexFokin [52]

Answer:

cost of producing the 501st item = $9.92

Step-by-step explanation:

The function representing the cost is given by;

C(x) = 10000 + 90x - 0.08x²

To get the cost of producing the 501st item, we have to first find the cost of producing 500 items and then do the same for 501 items then subtract the values gotten.

Thus;

C(500) = 10000 + 90(500) - 0.08(500)²

C(500) = 10000 + 45000 - 20000

C(500) = $35000

Similarly;

C(501) = 10000 + 90(501) - 0.08(501)²

C(501) = 10000 + 45090 - 20080.08

C(501) = $35009.92

cost of producing the 501st item = C(501) - C(500) = 35009.92 - 35000 = $9.92

3 0

2 years ago

Find the probability of spinning an even number and rolling an odd number?

laiz [17]

Answer:

The probability of spinning an even number is 1:2, or 50 percent. The probability of rolling an odd number is also 1:2, or 50 percent.

Explanation:

On most number spinners, there are an equal number of odds and evens. This is the same for a dice, since the numbers range from 1-6; 3 odd numbers and 3 even numbers.

3 0

3 years ago

Sarah has a cell phone plan that charges $0.12 per minute plus a monthly fee of $21.00. She budgets $65.50 per month for total c

kirill115 [55]

Answer:

собак в гавне гандонов дешовых псин

Step-by-step explanation:

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2 years ago

Factorise the following, using the identity a2 – 2ab + b2 = (a – b)2

Rasek [7]

The factorisation of the given expressions is as follows;

a) p²y²– 2py + 1 = (py -1)²
b) a²y² -2aby +b² = (ay - b)²

<h3>Factorization using identities</h3>

The given identity is;

a²– 2ab + b² = (a – b)²

From the given identity, we can conclude that;

In the expression (a);

py represents a in the identity and 1 represents b in the identity.

In the expression (b);

ay represents a in the identity and b represents b in the identity.

Hence, the factorised expressions are as represented above.