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Aleksandr-060686 [28]
3 years ago
6

Select the correct answer. Solve

Mathematics
1 answer:
Molodets [167]3 years ago
5 0

Answer:

B 1 1/7

Step-by-step explanation:

- 9 2/7 - ( -10 3/7)

We know subtracting a negative is like adding

- 9 2/7 +10 3/7

10 3/7 - 9 2/7

Putting this vertical

10  3/7

-9  2/7

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

1   1/7

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Find (f/g) (x) for the functions provided: ƒ(x) = x3 − 27, g(x) = 3x − 9
AnnZ [28]

Answer:

(\frac{f}{g})(x)=\frac{1}{3}(x^2+3x+9)

Step-by-step explanation:

We have been given that

f(x)=x^3-27,g(x)=3x-9

We can use the formula for difference of cubes to simplify the function f(x)

difference of cubes -  a^3-b^3=(a-b)(a^2+ab+b^2)

f(x)=x^3-27\\\\=x^3-3^3\\\\=(x-3)(x^2+3x+9)

And g(x) can be written as

g(x)=3x-9\\=3(x-3)

Thus, we have

(\frac{f}{g})(x)=\frac{(x-3)(x^2+3x+9)}{3(x-3}

On cancelling the common factors, we get

(\frac{f}{g})(x)=\frac{1}{3}(x^2+3x+9)

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3 years ago
Of the eggs produced by salmon,80% hatch, and of those, 25% survive to migrate to the ocean. How many eggs are needed to produce
Marina CMI [18]

Answer:

500 eggs are needed

Step-by-step explanation:

so 1/4 or the 80 percent make it to the ocean so 20 percent of total salmon make it to the ocean.

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if my answer helps please mark as brainliest.

8 0
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Explain how you could determine the vertex of the given quadratic function graphically. f(x) = (x + 2) (x -4)
bearhunter [10]

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To find the y-coordinate of the vertex, simply plug the value of -b / 2a into the equation for x and solve for y.

Step-by-step explanation:

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Step-by-step explanation:

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3 years ago
What is the difference between centroid orthocentre and circumcentre​
Sergeu [11.5K]

Answer:

centroid- the point of concurrency of the <em>medians.</em>

<em />

orthocenter- the point of concurrency of the <em>altitudes.</em>

<em />

circumcenter- the point of concurrency of the <em>perpendicular bisectors.</em>

<em />

hope this helps :)

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