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Yuliya22 [10]
3 years ago
7

X^7+5x+9 what is f(-1) for the polynomial

Mathematics
1 answer:
mars1129 [50]3 years ago
3 0

Answer: x=-3

Step-by-step explanation:

-7+5 times -1+9

−7+5×−1+9

-7-5+9

−7−5+9

-12+9

−12+9

−3

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Pipe A can fill a tank in 5 hours. Pipe B can fill the same tank in 7 hours. If both pipes were open, how long would it take the
-BARSIC- [3]

Answer:

It would take them 6 hours to fill an empty tank.

Step-by-step explanation:

Add the amount of time it takes Pipe A and Pipe B to fill an empty tank together (5 + 7) and then divide your sum by two. You should get 12 / 2 = 6.

<em>Hope This Helps!</em>

8 0
2 years ago
For the funtion f(x)= (x+7)^5, Find f^-1 (x)
quester [9]

Answer:

The inverse of function f(x)= (x+7)^5 is \mathbf{f^{-1} (x)=\sqrt[5]{x}+7}

Option A is correct option.

Step-by-step explanation:

For the function f(x)= (x+7)^5, Find f^{-1} (x)

For finding inverse of x,

First let:

y=(x+7)^5

Now replace x with y and y with x

x=(y+7)^5

Now, solve for y

Taking 5th square root on both sides

\sqrt[5]{x}=\sqrt[5]{(y+7)^5}\\\sqrt[5]{x}=y+7\\=> y+7=\sqrt[5]{x}\\y=\sqrt[5]{x}-7

Now, replace y with f^{-1} (x)

f^{-1} (x)=\sqrt[5]{x}+7

So, the inverse of function f(x)= (x+7)^5 is \mathbf{f^{-1} (x)=\sqrt[5]{x}+7}

Option A is correct option.

6 0
3 years ago
A flea weighs 8 decigrams, and an ant weighs 3 milligrams. How much more does a flea weigh than an ant?
Pavel [41]
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The flea weighs 797 milligrams more than the ant.
5 0
3 years ago
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Maslowich

Answer:

1.75 gallons

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With that information, we can write a proportion:

\frac{1 pint}{0.125 gallons} = \frac{14 pints}{x}

Cross multiply:

x = 1.75 gallons

4 0
2 years ago
Is a ice cube a polygon? why or why not?
Kipish [7]
A Polygon is a two dimensional figure that can be  drawn on a flat surface.A cube is a three dimensional figure that can be sculpted in three dimensions but can only have projections of it drawn on a flat surface.So a cube is not a polygon.
7 0
3 years ago
Read 2 more answers
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