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4 years ago

Please help me out if possible. :)

Mathematics

1 answer:

olga2289 [7]4 years ago

4 0

Answer:

Step-by-step explanation:

Look at the picture.

R(x, y)

y - is the same as second coordinate of the point Q → y = b

x - is first coordinate of the point S reduced by distance a → x = c - a

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Cora is creating a rectangular prism. The base of her prism is shown below. She plans to have a height of 8

Brut [27]

Answer:

See the explanation.

Step-by-step explanation:

Cora is making a rectangular prism. She plans to have 8 inches if height. What will be the volume of the rectangular figure?

As the figure formed is a rectangular prism. we need to find the volume of rectangular prism. Volume of prism will be:

Volume = Length · Width · Height

As she wants to have 8 inches of height, substitute it in the given equation:

Volume = 8(Length · Heights) inch³

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3 years ago

Alba was paid $135 for watching her neighbor's dogs for 9 days.

erastova [34]

!5.00 dollars and hour, since 15 times 9 is 135

7 0

4 years ago

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If f(x) and f-1(x) are inverse functions of each other and f(x) = 2x+5, what is f-1(8)?

Alexandra [31]

Answer:

B. 3/2

Step-by-step explanation:

If f(x) and $f^{-1}(x)$ are inverse, that means that if we switch the x and y for f(x) and solve for y, we will get the inverse function.

Knowing that f(x) = 2x + 5, let's write this as y = 2x + 5 and switch the x and y:

x = 2y + 5

Now, solve for y:

x = 2y + 5

x - 5 = 2y

y = (x - 5)/2

That's the $f^{-1}(x)$ function: $f^{-1}(x)=\frac{x-5}{2}$

Plug in 8 for x:

$f^{-1}(x)=\frac{x-5}{2}$

$f^{-1}(8)=\frac{8-5}{2}=3/2$

The answer is thus B.

<em>~ an aesthetics lover</em>

6 0

4 years ago

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If x^2 + y^2 = 10 and xy = -3, what is the value

nadya68 [22]

Answer:

Step-by-step explanation:

$xy=-3,\ x=-\frac{3}{y}\\ \\ x^2+y^2=10\\ \\ \frac{9}{x^2}+x^2=10\\ \\ x^4+9=10x^2\\ \\ x^4-10x^2+9=0\\ \\ (x^2-1)(x^2-9)=0\\ \\ (x-1)(x+1)(x-3)(x+3)=0\\ \\ x=-3,-1,1,-3\ y=1,3,-3,-1\\ \\ (x-y)^2\\ \\ (-3-1)^2=(-4)^2=16$

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3 years ago

Can someone please please help with these questions?

wolverine [178]

The answer to number seven is EDF!

5 0

3 years ago