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Fantom [35]
3 years ago
10

Two math teachers come together and write math problems about fruit vendors. If Teacher A can write 50 problems in 60 minutes an

d Teacher B can write 50 problems in 80 minutes, how long would it take them to write 50 problems if they worked together?
Mathematics
2 answers:
mylen [45]3 years ago
8 0
Approximately 70 minutes (???)
Fudgin [204]3 years ago
4 0

Answer:

hi

Step-by-step explanation:

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Write a polynomial function that meets the stated conditions.The zeros are −1, 2, and 7.
kondaur [170]

Answer:

A polynomial function that meet the conditions is x³ - 8x² + 5x + 14 = 0

Step-by-step explanation:

Hi there!

Let´s start writting a generic factored function. In this case, the function has 3 zeros so that the factored form will have 3 terms:

(x + a)(x + b)(x + c) = 0

For this expression to be 0, either (x+a) = 0 or (x+b) = 0 or (x+c) = 0

Then:

x + a = 0 ⇒ x = -a

x + b = 0 ⇒ x = -b

x + c = 0 ⇒ x = -c

Then, the values "a", "b" and "c" are equal to the zeros of the function but with opposite sign. Then, in our case:

a = 1

b = -2

c = -7

Then, the polynomial fuction will be:

(x + 1)(x - 2)(x - 7) = 0

Apply distributive property:

(x² - 2x + x -2)(x -7) = 0

(x² - x - 2)(x - 7)

x³ - x² - 2x - 7x² + 7x + 14 = 0

x³ - 8x² + 5x + 14 = 0

Then, a polynomial function that meets the conditions is:

x³ - 8x² + 5x + 14 = 0

Have a nice day!

6 0
3 years ago
How are the functions f(x) = 16^x and g(x) = 16^1/2x related???
serious [3.7K]
F(x) = 16^x = 8^2x
g(x) = 16^1/2x = 8^x

So you can see the relationship. They are all of the type a^bx form, with same base of a, f(x) will have larger increasing rate.
6 0
3 years ago
Read 2 more answers
Is the inverse of the function shown below also a function?
ycow [4]

Answer:

Yes

Step-by-step explanation:

Yes.  Here's why:  We can obtain the graph of the inverse of the function shown by reflecting the red graph about the line y = x.  The resulting graph is true for all x values and for all y values; it passes the vertical line test.

7 0
4 years ago
What is the slope of the line whose equation is -3x+y=12
docker41 [41]
3x is the answer as the opposite of -3 in front of x is 3
6 0
3 years ago
Read 2 more answers
What is the difference between 4Σn=1, 2n+1 and 4Σi=1, (2i+1)?
alina1380 [7]

Answer:

0

Step-by-step explanation:

Each expression is a way to write the sum ...

3 + 5 + 7 + 9

That sum in each case is 24, so the difference is 24-24 = 0.

6 0
3 years ago
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