If A= 30°verify:sin2A=2sinA.cosA​

Answers

Answer 1

Answer:

..........hope it helps.....

If A= 30verify:sin2A=2sinA.cosA

Related Questions

The sum of the digits in the number 994 is 9 + 9 + 4 = 22. How many 3-digit even numbers are there that have 24 as the sum of their digits ?

Answers

Answer:

4

Step-by-step explanation:

996

888

978

798

in the expression 8 ( x-y +b(x-y ; the common binomial factor is​

Answers

Step-by-step explanation:

the common binomial factor is (x-y).

hope this helps you.

Pls help will mark brainliest, no fake answers

Answers

Answer: Refer to Below

Step-by-step explanation:

PART 1: Write an expression to model the total cost

Given information

Php 2,000 activation fee

Php 1,500 monthly fee

Analysis of given information

Activation fee: the amount of money to start a charge (i.e. Let's say if there is a membership, then this fee would be the same as having a card of membership)

Monthly fee: the amount of money that would be charged monthly (i.e. Let's say if there is a membership, then this fee would be the amount of money that you would need to pay for maintenance every month)

Set variable according to the given information

Let x be the number of months for the membership

Write expression with the given information and the variable

Cost = Monthly fee × Number of months + Activation fee

[tex]\boxed{C = 1500x + 2000}[/tex]

PART 2: Evaluate the expression for 1 to 6 months of membership

**Information** Since we have already written the expression in [PART 1] and defined the number of months as [x], we are going to substitute the given number of months into the expression.

Given information

Number of months = 1, 2, 3, 4, 5, 6

Written expression from [PART 1]

C = 1500x + 2000

Substitute values into the expression

1 month = 1500 (1) + 2000 = [tex]\boxed{Php 3500}[/tex]

2 months = 1500 (2) + 2000 = [tex]\boxed{Php 5000}[/tex]

3 months = 1500 (3) + 2000 = [tex]\boxed{Php 6500}[/tex]

4 months = 1500 (4) + 2000 = [tex]\boxed{Php 8000}[/tex]

5 months = 1500 (5) + 2000 = [tex]\boxed{Php 9500}[/tex]

6 months = 1500 (6) + 2000 = [tex]\boxed{Php 11000}[/tex]

Hope this helps!! :)

Please let me know if you have any questions

Please help!
What system of linear equations is shown in the graph? Enter your answers in the box.

Answers

Answer:

The equation of the line with a bold line:

slope = ( 0 - ( -1 ) ) / ( ( 2 - 0 ) )= 1/2

c = -1

Therefore, y <= ( 1 / 2 ) x - 1

The equation of the line with the dotted line:

slope = ( 1 - ( - 2 ) ) / ( 0 - 1) = - 3

c = 1

Therefore, y < - 3x + 1

Step-by-step explanation:

If there is any confusion please leave a comment below.

Please Help me with this maths question

Answers

Step-by-step explanation:

formula to find volume of a cylinder => V= πr²h

(22/7×(3.5)²×12)cm³

462cm³.

now the total volume of plastic used is = 462×0.2 = 92.4cm³.

hope this helps you.

calculate the shaded area​

Answers

Answer:

640[tex]cm^{2}[/tex]

(I hope that I am right)

Step-by-step explanation:

The bigger shape :1. First, look at the triangle as a whole -

Area of a triange : [tex]\frac{Base x Height}{2}[/tex]

30 x 48 = 1440[tex]cm^{2}[/tex]

1440 ÷ 2 = 720[tex]cm^{2}[/tex]

2. Now let's look at the small triangle -

20 x 16 = 320[tex]cm^{2}[/tex]

320 ÷ 2 = 160[tex]cm^{2}[/tex]

The area of the bigger shape -720 - 160 = 560[tex]cm^{2}[/tex]

The smaller shape :1. Let's look at the shape as a rectangle first -

Area of a rectangle = Base x Height

20 x 16 = 320[tex]cm^{2}[/tex]

2. Now let's do the little triangle -

20 - 30 = 10

10 x 16 = 160[tex]cm^{2}[/tex]

160 ÷ 2 = 80[tex]cm^{2}[/tex]

The area of the smaller shape -80[tex]cm^{2}[/tex]The Area Of The Shaded Area :560 + 80 = 640[tex]cm^{2}[/tex]

Please I need help 15 points

Answers

If you just do trial and error 5000x 5 = 25000+ 15000x 2 =30000
30000+25000= 55000, ur desired amount

Answer:

swimming pool wedding:10,000

Caribbean wedding:45,000

Step-by-step explanation:

55,000

- 10,000

= 45,000

how many distinct 9-digit numbers can you make from four "1", three "2", and two "3"?

Answers

Answer:

2520

Step-by-step explanation:

If a nine digit number contains exactly 4 one's, 3 two's and 2 three's

We can choose the positions of the 1's in P(9/4) ways.  

We can choose the positions of the 2's from the five remaining positions in P(5/3) ways

We can choose the positions of the 3's from the two remaining positions in P(2/2) ways

In this problem order doesnt matter..

= (9!/5!×4!) × (5!/3!×2!) × (2!/2!×0!)

= 2520

Evaluate the function
f(x) = - 2x^2 + 2x + 4
Find f(1)

Answers

Answer:

f(1) = 4

Step-by-step explanation:

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

f(1) = - 2(1)^2 + 2(1) + 4

f(1) = -2 + 2 + 4

f(1) = 4

Can somone help ill give you brainliest.

Answers

Last option. Pls mark me brainliest. THANK YOU AND HAVE A GREAT DAY

Find the GCF of 72 and 108.

Answers

Answer:  the gcf of 72 and 108 is 36!

please help me quickly

Answers

Answer: y= 2x - 2

Step-by-step explanation:

I don't understand this question can someone help me with this please, please explain!! and thank you for the help!! If u dont know try your best :D

Answers

Answer:

Its basically asking how many pennies there are.

The answer is 37.5=2.5x because x represents the number of pennies while 2.5 represents the weight. Hope this helps!

x=15, by the way.

Step-by-step explanation:

Which of the statements below are true? Select all that apply. A) (2, 2) is a point on the line shown B) (3,6) is a point on the line shown C) Each pack of gum costs $2.00 D) Each pack of gum costs $0.50.​

Answers

Answer:

C)

Step-by-step explanation:

Help please! Solve the inequality.​

Answers

Answer:

x≤-3 1/2 or x>1

Step-by-step explanation:

The way we solve this is we simply rearrange the equation using algebra.

Step 1) For the first inequality, subtract 1/2 from both sides. This gets x by itself and turns the RHS into -3 1/2.

Step 2) For the second, add 3 to both sides. Once again, x is by itself, and the RHS is equal to 1.

factor the expression completely xy^4+x^4y^5

Answers

Answer:

xy^4(1+x^3y)

Step-by-step explanation:

Find the measure of each marked angle.

Answers

Answer:

x=64

Step-by-step explanation:

180=x+2+4x-142

180=5x-140

320=5x

64=x

Help me plzzzzzzzzzzz

Answers

Answer:

x = 11/3

Step-by-step explanation:

This is because that if you plug it in,

√x+3 = 2√x-2

√11/3 + 3 = 2√11/3 - 2

√20/3 = 2√5/3

Statement is true, therefore x = 11/3.

Hope this helps!

Before it started to rain, Bobby cut 1 8 of the grass in his yard and Danny cut 1 5 of the grass in the yard. Both boys were disappointed because they were not able to cut the entire yard. Which statement is TRUE?
A) Together the boys didn't even cut half the yard.
B) The boys were able to cut more than half the yard.
C) The boys cut almost three-fourths of the yard.
D) Together the boys cut almost the entire yard.

Answers

Answer:

Option A is correct

Step-by-step explanation:

Bobby = 1/8

Danny = 1/5

Let's add up both fractions:

1/8 + 1/5 =

1*5/8*5 + 1*8/5*8 =                   (multiplying both the numerator and                              

5/40 + 8/40 = 13/40                 denominator by the opposite denominator)

Together, they both cut 13/40 of the entire lawn.

Let's check each option:

A) Together the boys didn't even cut half the yard.

True, half of the yard is 20/40, and 13/40 < 20/40

B) The boys were able to cut more than half the yard.

False, half of the yard is 20/40, and 13/40 is not greater than 20/40

C) The boys cut almost three-fourths of the yard.

False, three-fourths of the yard is 30/40, and 13/40 is not close.

D) Together the boys cut almost the entire yard.

False, the entire yard is 40/40 and 13/40 is not close.

-Chetan K

BC=8.5cm.
Angle ABC = 90°.
Angle ACB = 38°.

Work out the length of AB.
Give your answer correct to 3 significant figures.

Answers

Answer:

AB = 154

Step-by-step explanation:

Triangle Rectangle ABC = 90

Sen 38°=0.616 = 154/250

Sen 52°=0.788 =197/250

AC =250

AB = 154

BC = 197

What is the measurement of an angle if it measures 37 degrees

Answers

Answer:

37

Step-by-step explanation:

Well you said the answer in your question

37°, if that’s not what ur asking u can elaborate more in comments! :)

what is the diameter of 12mm and 8mm

Answers

Answer:

diameter 12mm

Step-by-step explanation:

How much is 20-20? help me please

Answers

Answer:

the answers is20-20=0

Step-by-step explanation:

20 -

20

__

0

Answer:

Answer=20

Step-by-step explanation:

20 - 20

20/2=10

10-10=0

C: LOL

A cell phone company has noticed that the probability of a customer experiencing a dropped call decreases as the
customer approaches a cell site base station. A company representative approached a cell site at a constant speed and
calculated the probability of a dropped call at regular intervals, and the probabilities formed the geometric sequence
08, 04.02,01,005. If the company representative continues calculating the probability of a dropped call, what will
be the next term in the sequence?
A
0.025
B)
000S
0.010
D)
0.0005

Answers

Answer:

The next term in the sequence is:

     0.00221184

Step-by-step explanation:

We are given that:

A cell-phone company has noticed that the probability of a customer experiencing a dropped call decreases as the customer approaches a cell-site base station.

A company representative approached a cell site at a constant speed and calculated the probability of a dropped call at regular intervals, and the probabilities formed the recursive sequence:

             0.6, 0.4, 0.24, 0.096, 0.02304.

as we can see third term is product of first two terms

fourth term is product of third and second term

fifth term is the product of fourth and third term

so,  the next term in the sequence which is the sixth term will be the product of fifth and fourth term=  0.02304×0.096

                                                  =  0.00221184

What are the vertex and x intercepts of the graph of the function below
y=(x-4)(x + 2)

Answers

Answer:

x - intercepts: (4,0) and (-2,0)

vertex: (1/2 ,  - 17/2)

Step-by-step explanation:

Part A

To find the x-intercepts you have to set y=0

(x-4) (x+2) = 0

Separate the parenthesis. Solve for  x

x-4 = 0

x= 4

x+2 = 0

x= -2

x - intercepts: (4,0) and (-2,0)

-------------------------------------------------

Part B

vertex formula for the x: coordinate : -b/2a

Expand the function.

y = 2x^2-2x-8

a = 2

b = -2

c= -8

-b/2a = -(-2)/2(2) = 1/2

vertex x- coordinate: 1/2

Substitute 1/2 back into every "x" in the function to find the "Y" for the vertex.

y = 2(1/2)^2 -2(1/2) -8

y = -17/2

vertex: (1/2 ,  - 17/2)

Find the missing amount)

Original:$12
New:$42
%increase:________

(not multiple choice)

Answers

Answer: 350% increase

divide 42 by 12

42 / 12 = 3.5

change 3.5 into a percentage

3.5 = 350%

Increased by 350%

1. 42 ➗ 12 = 3.5
2. 3.5(100) = 350
3. Increased by 350%

plz help asap i beg u

Answers

Answer: (-1,4), (1,0), (0,3), (-2,3), (-3,0)

Step-by-step explanation: look at the dots on the plot

Big Pig Game Company makes checker sets and chess sets. Each day the company has available 1900 boards, which can be used for both games. They have 80,000 units of wood for making pieces. Each checker set uses 20 units of wood and each chess set uses 60 units of wood. The company that Big Pig Game Company sells to can take up to 1250 checker sets per day and up to 750 chess sets per day. The company makes a profit of $1.00 on each checker set and $2.00 on each chess set.

Requried:
a. How many checker sets and how many chess sets should the company make each day in order to maximize its profits?
b. What is the profit per day using this strategy?

Answers

Answer:

1900 divided by 20 is 95

1900 - 95 is 1805

1805 divided by 60 is 31

Step-by-step explanation:

Four graphs are shown below:



Which graph represents a positive nonlinear association between x and y?

Graph A
Graph B
Graph C
Graph D

Answers

Answer

It is graph A

The original price of a fitness tracker is $85. It is on sale for 10% off. What is the sale price of the fitness tracker?

Answers

First you do 1.00-0.10 to get 0.90, then you times 85 by 0.90 to get your result of $76.5 a brainliest would be appreciated if i helped!

Answer: 76.5 dollars

Answer:

76.50

Basically move decimal point from 85.00 one place to the left which would become 8.50

You then subtract 85.00 by 8.50 and you'll get 76.50

hope that helps! have a good day

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