3 years ago

Can someone help me with variable expressions

Mathematics

1 answer:

EastWind [94]3 years ago

4 0

You get the product by multiplying...in this case you want to double the product of j and 8 so:

2(8*j)

2(8j)

16j

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Subtracting a negative number from a negative number gives you what

GREYUIT [131]

Depends.
A. -12 - -6 = -6
but
B. -6 - -12 = 6

Two negatives always cancel, so the equation for A. would be like saying
-12+6, and B. -6+12.

8 0

2 years ago

<img src="https://tex.z-dn.net/?f=f%28x%29%20%3D%20%7Bx%7D%5E%7B2%7D%20%2B%204x%20-%205" id="TexFormula1" title="f(x) = {x}^{2}

frutty [35]

The inverse function theorem says

$\dfrac{\mathrm df^{-1}}{\mathrm dx}(16)=\dfrac1{\frac{\mathrm df}{\mathrm dx}(f^{-1}(16))}$

We have

$f(x)=x^2+4x-5$

defined on $x>-2$ , for which we get

$f^{-1}(x)=-2+\sqrt{x+9}$

and

$f^{-1}(16)=-2+\sqrt{16+9}=3$

The derivative of $f(x)$ is

$f'(x)=2x+4$

So we end up with

$\dfrac{\mathrm df^{-1}}{\mathrm dx}(16)=\dfrac1{\frac{\mathrm df}{\mathrm dx}(3)}=\dfrac1{10}$

6 0

2 years ago

The figure below shows a rectangular prism and a cube: A rectangular prism and a cube are drawn side by side. The length of the

cluponka [151]

5 in.*.8 in*1.6 in =6.4 in^3 (Volume of rectangular prism)
.2^3=0.008 in^3 (Volume of cube)
6.4/0.008=800
so basically the answer is 800 cubes

7 0

2 years ago

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Jarius placed 6 number tiles labelled 4, 7, 10, 11, 14, and 21 in a box. He will pick one of the number tiles from the box witho

Bumek [7]

Answer:

1/2

Step-by-step explanation:

The possible picks are 4,7,10,11,14,21

The even tiles are 4,10,14

P(even) = number of even tiles /total tiles

=3/6

= 1/2

8 0

3 years ago

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If a/3 = b/2 , what are the following ratios?<br><br> 5a:3b

Arlecino [84]

15 = 6 I hope this is what you are looking for

5 0

3 years ago

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