maths! please help :)

|AB|=10cm
|AD|=5cm
|DC|=6cm
The angles A and D are right angles. Find the length of [BC].

Answer:

[tex](b)\\\tan x, \cot x[/tex]

Step-by-step explanation:

Given

trigonometric function is

[tex]\dfrac{\cos 2x-\cos 4x}{\sin 2x+\sin 4x}[/tex]

Applying trigonometric formulae

[tex]\Rightarrow \cos C-\cos D=-\sin (\dfrac{C+D}{2})\sin (\dfrac{C-D}{2})\\\\\Rightarrow \sin C+\sin D=\sin (\dfrac{C+D}{2})\cos (\dfrac{C-D}{2})[/tex]

[tex]\Rightarrow \dfrac{\cos 2x-\cos 4x}{\sin 2x+\sin 4x}=\dfrac{2\sin 3x\cdot \sin x}{2\sin 3x\cdot \cos x}\\\\\Rightarrow \dfrac{\sin x}{\cos x}=\tan x[/tex]

option (b) is correct

[tex]\Rightarrow \dfrac{\cos 2x+\cos 4x}{\sin 2x-\sin 4x}=\dfrac{2\cos 3x\cdot \cos x}{2\cos 3x\cdot \sin (-x)}=-\cot x[/tex]

Step-by-step explanation:

0.75

3.75

9.75

please mark me brainliest

Answer:

The domain or x-values are on the horizontal axis, this is what you spend.

The range or y-values are on the vertical axis, this is your bonus.

The points to be indicated:

Plot the points and connect to make a line.

The graph is attached

Answer:

Webca-mtoy.com   webca-mera.io       I only know 2

Step-by-step explanation:

Answer:

$132.59 is the answer

Answer:

9.7d+4.1+5.1d-9.2

9.7d +5.1d+4.1-9.2 (take same element near)

d(9.7d +5.1) + 4.1-9.2

d(14.8) - 5.1

answer :

D −5.1+14.8d

Step-by-step explanation:

Answer:

the width is 3

Step-by-step explanation:

Answer:

They are not similar.

Step-by-step explanation:

The angles of a triangle add up to be 180°. If they were similar, the triangle angles would have to be 60°, 40°, and 80°. Because one of the angles is 81°, the triangles cannot be similar.

81° + 40° + 60° does not equal 180.

Answer:

x = 50º

Step-by-step explanation:

All angles in a triangle have to add up to 180º

Answer:

Part 1:

1. Rhombus (4 equal sides)

2. Parallelogram (opposite sides are equal)

3. Rectangle (opposite sides are equal, 4 right angles)

Part 2:

1. Square, rhombus (4 equal side)

2. Rectangle, parallelogram, square, rhombus (opposite sides are equal)

3. Rectangle, square (opposite sides are equal, 4 right angles)

Answer:

b. 7 4/5 in

Step-by-step explanation:

First, turn 1 2/5 and 2 1/2 into decimals which would be 1.4 and 2.5. Then, multiply 1.4 by 2 and 2.5 by 2 since you have to add up all the sides of the rectangle. Then, add the products to get the perimeter of 7.8 inches. (4/5 = 0.8).

Answer:

1/10

Step-by-step explanation:

Answer:

Step-by-step explanation:

12(2y+1)-18y=36  <---- Distribute 12 into 2y+1

24y+12-18y=36 <----- Subtract 24y by 18y

6y+12=36 <---- Subtract 12 from 36

6y=24  <---- Divide 6 by 24

y=4

Answer:

5a + 2b

Step-by-step explanation:

9a + 3b -4a -b

9a - 4a + 3b - b

5a + 2b

Answer:

OP and OR

Step-by-step explanation:

When the two segments intersect they form a 90-degree angle implying that the lines are perpendicular.

Answer:

The greatest common factor is 7

[tex]35 + 14 = 49[/tex]

Step-by-step explanation:

Given

[tex]35 + 14 =[/tex]

Required

Apply distributive property

Express 35 as 7 * 5 and 14 as 7 * 2

[tex]35 + 14 = 7 * 5 + 7 * 2[/tex]

Apply distributive property

[tex]35 + 14 = 7 ( 5 + 2)[/tex]

The greatest common factor is 7

Solving further to get the solution

[tex]35 + 14 = 7 * 7[/tex]

[tex]35 + 14 = 49[/tex]

Answer:

7(5+2)

hope this helps <3

Answer:

$300

Step-by-step explanation:

I = prt

I = 6000(.05)(1)

I = 300

the answer is 30.Can I get brainliest,im correct.I got it on a quiz

Answer:

5/12

Step-by-step explanation:

add: 3+2=5, 6+6=12. put 5 on the top 12 on the bottom

Answer:

Step-by-step explanation:

Because lines [tex]m[/tex] and [tex]n[/tex] are parallel, angles 1, 3, 4, 6 are equivalent, and all remaining angles are also equivalent.

Knowing this, you can set up the following equation:

[tex]86 = 2x + 25[/tex]

[tex]86 - 25 = 2x[/tex]

[tex]61 = 2x[/tex]

[tex]x = 30.5[/tex]

Answer:

x = 30.5

angle 1: 94 degrees

angle 2: 86 degrees

angle 3: 94 degrees

angle 4: 94 degrees

angle 5: 86 degrees

angle 6: 94 degrees

Step-by-step explanation:

Answer:

19x²

Step-by-step explanation:

sorryy hehe not sure dfhjjsdcbjhrsszzchjjhdssdghhjgesss

Answer:

Step-by-step explanation:

2x + 6x - 27=

8x - 27 (In this step, we add the like terms 2x+6x.)

Is this the kind of answer you needed?

Answer:

hypergeometric

Step-by-step explanation:

For each winning ticket, there are only two possible outcomes. Either it is held by a men, or it is not.

There is a set number of X, and as the number of winning tickets decrease, the probability of a winning ticket being held by a men can decrease or increase. This is a characteristic of the hypergeometric distribution.

Answer:

your answer will be OPTION D!!

Step-by-step explanation:

hope it helps you

have a great day!!

Hi to u too and nope. never heard of Ruffini metod. Sorry.

a. 2⁵ × 2^(3) = 2^(a) is a = 8.

b. 7⁴/[tex]7^b[/tex] = 7⁻² is b = 6.

c. [tex]8^c[/tex] = 1/64 is c = - 2.

Some common rules of exponents are

[tex]{a^b}\times{a^c} = a^{b + c}[/tex].

[tex]\frac{a^b}{a^c} = a^{b - c}[/tex]

We can only add and subtract exponents only when we have the same base.

Given,

2⁵ × 2³ = [tex]2^a[/tex].

[tex]2^{5+3}[/tex]= 2^(a).

[tex]2^8[/tex] = [tex]2^a[/tex]

a = 8.

[tex]\frac{7^4}{7^b}[/tex] = [tex]7^{-2}[/tex]

[tex]7^{4-b}[/tex] = [tex]7^{-2}[/tex].

4 - b = - 2.

- b = - 6.

b = 6.

[tex]8^c[/tex] = 1/64.

[tex]8^c[/tex] = 1/[tex]8^2[/tex].

[tex]8^c[/tex] = [tex]8^{-2}[/tex]

c = - 2.

learn more about exponents here :

https://brainly.com/question/15993626

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