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dangina [55]
3 years ago
14

Select the best deal for tutoring help for your Algebra I class. A) $45 for 1 hour B) all the same rate C) $30 for 50 minutes D)

$20 for 30 minutes
HURRY 20 POINTS
Mathematics
2 answers:
Anettt [7]3 years ago
6 0

Answer:

c

Step-by-step explanation:

because all the others are bigger than .6

Lilit [14]3 years ago
3 0
I think the answer would be c but I'm not positive
I hope I help :)
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Find g^-1(x) <br><br> A<br> B<br> C<br> D
Katyanochek1 [597]
<h2>Answer:</h2>

a. \ g^{-1}=-1 \pm\sqrt{\frac{3}{x}+1}

<h2>Step-by-step explanation:</h2>

A function has an inverse function if and only if passes the Horizontal Line Test for Inverse Functions. This test tells us that a function f has an inverse function if and only if there is no any horizontal line that intersects the graph of f at more than one point. So the function is called one-to-one. The graph of g is shown below. As you can see, this function does not pass the Horizontal Line Test, therefore the inverse is not a function. However, let's find g^-{1}(x):

g(x)=\frac{3}{x^2+2x} \\ \\ Substitute \ g(x) \ by \ y \\ \\y=\frac{3}{x^2+2x} \\ \\ Interchange \ x \ and \ y: \\ \\ x=\frac{3}{y^2+2y} \\ \\ Solve \ for \ y: \\ \\y^2+2y=\frac{3}{x} \\ \\ Completing \ square \\ \\y^2+2y\mathbf{+ 1}\mathbf{-1}=\frac{3}{x} \\ \\(y+1)^2=\frac{3}{x}+1 \\ \\y+1=\pm\sqrt{\frac{3}{x}+1} \\ \\ y=-1 \pm\sqrt{\frac{3}{x}+1}

Finally, substitute y \ by \ g^{-1}:

boxed{g^{-1}=-1 \pm\sqrt{\frac{3}{x}+1}}

7 0
3 years ago
How much interest will $2,000 earn at an annual rate of 8% in one year if the interest is compound every half a year?
Serggg [28]

Answer:

the yearly interest would be 160.00

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Which expression could be substituted for y in the second equation to find the value of x?
AlexFokin [52]

Answer:

x = 31 /4 , y = −11 /2

8 0
3 years ago
Will a 11.5-inch x 18-inch rectangular tray fit in<br> the box shown? Explain.
pychu [463]

Answer:

Option D

Step-by-step explanation:

From the picture attached,

In the parallelogram ABCD,

Length of diagonals AC and BD are equal.

By the property,

"If the lengths of the diagonals of a parallelogram are equal, parallelogram will be a rectangle".

Therefore ABCD is a rectangle.

That means all interior angles of the given rectangle will be 90°.

Now we apply Pythagoras theorem in right triangle ΔABC,

AC² = AB² + BC²

(22)² = (12)² + (BC)²

484 - 144 = (BC)²

BC = √340

BC = 18.44 inches

Dimensions of the given box are 12 inches by 18.44 inches.

Dimensions of the rectangular tray is 11.5 inches by 18 inches.

Since, dimensions of the box are larger than the dimensions of the tray, tray can be adjusted in the box.

Therefore, Option D will be the answer.

3 0
3 years ago
help! what do i do
Sloan [31]
Switch the y and x then solve for y, so I believe b.
5 0
2 years ago
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