3 years ago

If a=5 and b=-3, what is the value of 2ab-b2? A. -262 B.-259 C.-39 D.-21

Mathematics

2 answers:

ikadub [295]3 years ago

5 0

Answer:

I get 24...... ....... .......

MA_775_DIABLO [31]3 years ago

4 0

Have you tried photomath?

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You pay a company $2400 for online promotion which increases your profit by $25,456. What percent did it increase?

MA_775_DIABLO [31]

Your profit increased by about 1061%

6 0

3 years ago

The polygon Q(3, 2), R(6,5), S(6, 2)

ycow [4]

Answer:

Q' (12,8) , R'( 24,20) and S' (24,8)

Step-by-step explanation:

Here, we want to get the coordinates of the image after dilating the pre-image by a scale factor of 4

What we have to do here is to multiply each of the coordinate on the pre-image by 4

We have this as;

Q' = (4*3, 2 * 4) = (12,8)

R' = (4*6, 4*5) = (24,20)

s' = (4*6, 4*2) = (24,8)

4 0

3 years ago

Let f(x)=cos(x)x^-2<br> F’(x)=

kondaur [170]

$f(x)=cos(x)x^{-2}\implies f(x)=\cfrac{cos(x)}{x^2}\implies \cfrac{df}{dx}=\stackrel{\textit{quotient rule}}{\cfrac{-sin(x)\cdot x^2-cos(x)\cdot 2x}{(x^2)^2}} \\\\\\ \cfrac{df}{dx}=\cfrac{-x[x\cdot sin(x)+2cos(x)]}{x^4}\implies \cfrac{df}{dx}=\cfrac{-[xsin(x)+2cos(x)]}{x^3}$