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kirill115 [55]
3 years ago
9

Pietro buys 20 candy bars for $6 he plans to sell all 20 candy bars in 1 day he need to make a profit of $10 per day to meet his

fundraising goal how much must he charge for each candy bar?
Mathematics
1 answer:
iren [92.7K]3 years ago
5 0
He would have to charge 80 cents per candy bar!
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I can’t figure out how to use the zeros in the polynomial. Please explain
Temka [501]

Answer:

a) P (x) = (x + 3) (x-1) (x-4)

b) P (x) = (2x + 5) (5x - 4) (x-6)

c) P (x) = (x-3) (x-1) (x-4) (x + 1) ^ 2

Step-by-step explanation:

<u>For the question a *</u> you need to find a polynomial of degree 3 with zeros in -3, 1 and 4.

This means that the polynomial P(x) must be zero when x = -3, x = 1 and x = 4.

Then write the polynomial in factored form.

P (x) = (x + 3) (x-1) (x-4)

Note that this polynomial has degree 3 and is zero at x = -3, x = 1 and x = 4.

<u>For question b, do the same procedure</u>.

Degree: 3

Zeros: -5/2, 4/5, 6.

The factors are

x = -\frac{5}{2}\\\\x +\frac{5}{2} = 0\\\\(2x +5) = 0

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

x =\frac{4}{5}\\\\x-\frac{4}{5} = 0\\\\(5x-4) = 0

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

x = 6\\\\(x-6) = 0

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

P (x) = (2x + 5) (5x - 4) (x-6)

<u>Finally for the question c we have</u>

Degree: 5

Zeros: -3, 1, 4, -1

Multiplicity 2 in -1

x = -3\\\\(x-3) = 0

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

x = 1\\\\(x-1) = 0

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

x = 4\\\\(x-4) = 0

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

x = -1\\\\(x + 1) = 0

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

P (x) = (x-3) (x-1) (x-4) (x + 1) ^ 2

8 0
3 years ago
In a laboratory, under favorable conditions, a bacteria grows at an exponential rate. the number of cells C in the population is
Naily [24]
Selection C is appropriate.

_____
A. The population is constant at 8.

B. The population is constant at 24.

C. Matches the problem description.

D. The initial population is 24 and after 1 hour is 72.
4 0
3 years ago
Read 2 more answers
Granda has 14 red roses and 7 pink roses. How many more red roses than pink roses does she have
lions [1.4K]
14-7 = 7
7 more red roses than pink roses
8 0
3 years ago
Read 2 more answers
Can anyone help me with this?
matrenka [14]

Answer:

\sqrt{7}

Step-by-step explanation:

Given

4\sqrt{7} - 10\sqrt{7} + 7\sqrt{7} ( add the coefficients of the terms )

= (4 - 10 + 7) \sqrt{7}

= 1\sqrt{7}

= \sqrt{7}

5 0
3 years ago
Plz help fast!!
Leto [7]

Answer:

D. 16 km

Step-by-step explanation:

Hope this helps!

6 0
3 years ago
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