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3 years ago

Which of these figures has rotational symmetry?

Mathematics

1 answer:

Ganezh [65]3 years ago

5 0

B. The number of times u can rotate the figure so it looks like itself (2)

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Which one of the following letters would be considered formal?

Ivahew [28]

A. a letter of application

8 0

4 years ago

please answer the question on the screenshot below, also please explain to me how you got your answer.

frutty [35]

QUESTION 1

The given functions are;

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

$(f+g)(x)=f(x)+g(x)$

$(f+g)(x)=5x^2-2x+3x^2+x-4$

We regroup like terms to obtain;

$(f+g)(x)=5x^2+3x^2-2x+x-4$

This simplifies to;

$(f+g)(x)=8x^2-x-4$

The correct answer is A.

QUESTION 2

The given functions are;

$f(x)=3x^2+5$ and $g(x)=x-2$ .

$(fg)(x)=(f(x))(g(x))$

This implies that;

$(fg)(x)=(3x^2+5)(x-2)$

$\Rightarrow (fg)(x)=3x^3-6x^2+5x-10$

The correct answer is B.

QUESTION 3

The given functions are

$f(x)=3x^2+10x-8$ and $g(x)=3x^2-2x$ .

$(\frac{f}{g})(x)=\frac{f(x)}{g(x)}$

$(\frac{f}{g})(x)=\frac{3x^2+10x-8}{3x^2-2x},x\ne0,\frac{2}{3}$

We factor to obtain;

$(\frac{f}{g})(x)=\frac{(x+4)(3x-2)}{x(3x-2)},x\ne0,\frac{2}{3}$

We cancel the common factors to obtain;

$(\frac{f}{g})(x)=\frac{x+4}{x},x\ne0,\frac{2}{3}$

The correct answer is A.

5 0

4 years ago

Simplify -4(x-5) +3(a-7)

PilotLPTM [1.2K]

Answer:

According to Bodmas rule, if an expression contains brackets ((), {}, []) we have to first solve or simplify the bracket followed by of (powers and roots etc.), then division, multiplication, addition and subtraction from left to right.

Step-by-step explanation:

-4x + 20 +3a - 21

3a - 4x - 1

6 0

3 years ago

A pair of shoes originally costs $42 but is on sale for 33% off. What is the new price? Show how you know.

gavmur [86]

Hello!
The Answer Is 28.14
Because (42x33)/100=13.86
42.00-13.86=28.14

5 0

3 years ago

Identify the graph of xy=-8 for theta=pi/4 and write and equation of the translated or rotated graph in general form.

eduard

Answer:

Step-by-step explanation:

I hope this helps!

4 0

3 years ago

Read 2 more answers