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allochka39001 [22]
4 years ago
5

Write a polynomial function p(x) with x-intercepts at -1,4, and -5

Mathematics
1 answer:
KATRIN_1 [288]4 years ago
6 0

Answer:

x^3 + 2x^2 - 19x - 20

Step-by-step explanation:

Just use factored form to make them zeros, therefore making them x intercepts.

-1 --> x + 1

4 --> x - 4

-5 --> x + 5

(x + 1)(x - 4)(x + 5) = 0

Now multiply this out with a Punnett square.

After that, the result is...

x^3 + 2x^2 - 19x - 20

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Alright, second try. 15 Points to whoever can solve with a half-decent explanation.
sesenic [268]

Answer:

29 cans

Step-by-step explanation:

To solve this problem we must use Heron's formula; A = \sqrt{S(S-a)(S-b)(S-c)}

S = 1/2 the perimeter of the given triangle

a, b, c = the measurements of the three given sides

The first step to solving this question is first finding the perimeter.

P = 65m + 74m + 67m

P = 206m

Now that we have our perimeter, we must divide P by 2 to get S.

S = 206/2

S = 103

Now we plug our numbers into Heron's formula.

A = \sqrt{S(S-a)(S-b)(S-c)}

A = \sqrt{103(103-65)(103-67)(103-74)}

A = \sqrt{103(38)(36)(29)}

A = \sqrt{103(39672)}

A = \sqrt{4086216}

Find the square root of this number.

A ≈ 2021.43909134... m²

If a can of paint covers 70 square meters, then you will need to figure out how many cans you need. This can be done by dividing the overall area of the triangle by the area that a single can of paint can cover.

\frac{2021.43909134...}{70} = 28.8777013049...

We know we can't buy 28.87... of a can (people simply do not sell parts of cans or half-full containers... unless its a bag of lays chips and their 80% air nonsense...) so we must round up to the nearest whole number.

28.87... = 29

Thus we finally have our answer: 29 cans of paint!

5 0
3 years ago
Might be a little hard to see but please help
yan [13]
The answer is option C
5 0
3 years ago
If the monthly electrical utility bills of all customers for the Far East Power and Light Company are known to be distributed as
Y_Kistochka [10]

Answer:

A) About $195.00

Step-by-step explanation:

In a normal distribution, the interval (mean - 3*standard deviation, mean + 3*standard deviation) account for about 99.7% of the values. In this case mean + 3*standard deviation = $87.00 + 3*$36.00 = $195.00. So, it 's expected that this amount of money would be the largest individual customer bill.

4 0
3 years ago
Write an equation in standard form for the line whose slope is undefined and and passes through (-6,4).
soldi70 [24.7K]
A line whose slope is undefined has no finite slope; the line is a vertical one.
A vertical line has an equation of the form x = k.  In this case, since the line passes thru (-6,4), the eq'n of the line is x = -6.
6 0
3 years ago
What is the measure of the missing angle to the nearest degree
Ray Of Light [21]

Answer: D 47 degrees

Step-by-step explanation:

5 0
3 years ago
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