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2 years ago

Cards in a pack are black or red in the ratio

Mathematics

1 answer:

Makovka662 [10]2 years ago

6 0

Answer:

It's 5/7

Step-by-step explanation:

Total cards=black +red=2+5=>7

Total red = 5

Which gives 5/7

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Graph the inverse circular function by hand, given f(x) = 3sin(2x) ;-pi/4 ≤ ≤pi/4

nasty-shy [4]

Part a)

a) The given function is

$f(x) = 3 \sin(2x)$

We let

$y = 3 \sin(2x)$

Interchange x and y.

$x= 3 \sin(2y)$

Solve for y;

$\frac{x}{3} = \sin(2y)$

$y = \frac{1}{2} { \sin}^{ - 1}( \frac{x}{3} )$

${f}^{ - 1}(x) = \frac{1}{2} { \sin}^{ - 1}( \frac{x}{3} )$

Part b) The range of f(x) refers to y-values for which f(x) exists.

The range of f(x) is

$- 3 \leqslant y \leqslant 3$

This is because the function is within y=-3 and y=3.

c) The range of

${f}^{ - 1} (x)$

$- \frac{ \pi}{4} \leqslant y \leqslant \frac{\pi}{4}$

The domain is -3≤x≤3

This is because the domain and range of a function and its inverse swaps.

Part d) The graph is shown in the attachment.

3 0

3 years ago

Give an example of an addition problem in which you would and would not group the addenda differently to add

Ann [662]

Pemdas if you don't know what they are it looks like this.. (4+5)-5+4
similar to that.....
I am pretty sure you wouldn't add that in a agenda because of the different properties it has but there are plenty more ways i just haven't figured them out

8 0

2 years ago

Help me with this, find the area of the triangle

mamaluj [8]

Answer: 35

Step-by-step explanation:

4 0

2 years ago

Find the equation of a line through the given point A that satisfies the given condition: Point A(-2,7); parallel to the line y=

Inga [223]

Answer:

y = -3x + 1

Step-by-step explanation:

slope = -3

y = mx + b

7 = -3(-2) + b

7 = 6 + b

1 = b

y = -3x + 1

3 0

3 years ago

In a sale, normal prices are reduced by 10%

Sonja [21]

Answer:

Sory po hindi kopoalan hihi sory po

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2 years ago