Read the proof.
What is step 2?

sin(2x) = cos(x)cos(x) – sin(x)sin(x)
sin(2x) = sin(x)cos(x) – sin(x)cos(x)
sin(2x) = cos(x)cos(x) + sin(x)sin(x)
sin(2x) = sin(x)cos(x) + sin(x)cos(x)

Answer:

The correct answer is D) sin(2x) = sin(x)cos(x)+sin(x)cos(x)

Step-by-step explanation:

Right answer on Edge

The step 2 will be;

⇒ sin (2x) = sin (x) sin (x) + cos (x) cos (x)

Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.

Given that;

The steps are;

Step 1; sin (2x) = sin (x + x)

Step 3; sin (2x) = 2 sin (x) cos (x)

Now,

Since, The steps of the solution are;

Step 1; sin (2x) = sin (x + x)

Step 3; sin (2x) = 2 sin (x) cos (x)

Hence, We get;

All the steps as;

⇒ sin (2x) = sin (x + x)

⇒ sin (2x) = sin (x) sin (x) + cos (x) cos (x)

⇒ sin (2x) = 2 sin (x) cos (x)

Thus, The expression for step 2;

⇒ sin (2x) = sin (x) sin (x) + cos (x) cos (x)

Learn more about the mathematical expression visit:

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i would keep this up but i figured it out and now i understand

21 2/3 divided 3 1/4

Thank you guys for helping me. I need help on this one

Petra jogs 4 miles in 36 minutes. At this rate, how long would it take her to jog 10 miles.

A car drives eighty miles on seven gallons of gas. Determine the number of miles per
gallon.

What is the product?
7•(—4) • (—6)

1. —168
2. —3
3. 17
4. 168

Which point is a point where the graph of y = (x − 5)(x2 − 7x + 12) crosses the x-axis?
A. (-5,0)
B. (-3,0)
C. (4,0)
D. (12,0)

Pls help What is 64% of 225?

WHAT DO I DO NEXT!!!!!!!!!!
Names
Item 1
Price
Item 2
Price
Item 3
Price
Subtotal
Tip
Total Bill
Your name
My sister
Kids meal and chicken tenders
4.99
burger
3.99
Drink
small
2.50
49.77
3
50.00
Friend #1
family
Kids meal
4.99
Cheese burger
2.99
Drink
small
1.99
29.69
10
30.00
Friend #2
me
burger
2.30
fries
2.99
Coffe
mocha
2.00
13.75
20
14.00
Friend #3
Family and family
Burger with stuff in side
4.99
Burger with stuff in side
4.99
Two drinks for two people.
9.00
18.99
20
c
Part 2: Questions
Answer the following questions, showing all work:
What is the total cost of the entire bill (all four meals), including tip?
50 + 30+ 14 + 19 = 113


Write an expression using fractions to show how to determine the amount that each person will pay. Then calculate each person's contributions showing all steps in long division.
113
If you just multiply 4.99 by 3.99 by 2.50 you would get 49.77 thats just an example.



If each person paid an equal amount, who would save the most money? Explain your reasoning using at least two complete sentences.

solve for x in terms of y: 5y = 3x + 2

Helpz
A stockbroker earns $53,000 annually plus 0.8% of his clients’ total investment portfolio. If his clients’ investments total $1.2 million, what is his commission this year?

what is 5x10^-7 as a decimal

how do yo solve 46x3 as the distributive property?

HELP PLS! WILL REWARD BRAINLIEST, TYSM !

Which number can each term of the equation be multiplied by to eliminate the fractions before solving?

-3/4m-1/2=2+1/4m


o 2
o 3
o 4
o 5

Evaluate the following expression 6 x (5+3)3 - 2^3

four friends use an online coupon to get a $15 discount on each concert ticket buy. they spent $312 for the four tickets. what was the price of one ticket without the discount?

Write: x^2 + 8x + 10 in the form (x + a)^2 + b

help me please with this

#2 PLS HELP I WILL GIVE BRAINLIEST

HELLLLPPPPP two questions: AND I WILL GIVE YA THE BRAINLIESTTTTT
question one: Marcos mixes 434 oz of lemonade. he wants to filll the 14 cups he has with equal amounts of lemonade.
How many lemonade should he put in each cup?
Marcos should put_____ ounces in each cup.

Question 2: Kainoa collects trading cards. he has 1,005 baseball cards, 702 basketball cards, and 885 football cards. And he wants to put them all in albums. Each page holds 18 cards.
How many pages will he need to hold all of his cards?
Kainoa will need_____ pages.

What is the equation of the line that passes through the point (5,1) and has a slope
of 6/5?

A horseshoe with nails weighs 8.2 ounces. Six nails are in each horseshoe. Each nail weighs 0.2 ounces
What is the weight of the horseshoe without the nails?

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A high school club is conducting a cupcake sale at a local fair to raise money for a trip. The club members are baking a total of 444 cupcakes. Each cupcake will sell for 3.00. The display tables cost $75.00 to rent.


Part A:
If n is the Number of cupcakes sold and p is the profit earned, which is the Independent in variable and which is the dependent variable? Explain.

Independent variable:

Dependent variable:

Explain:

Haley has not been able to maintain the $1,200 minimum balance required to avoid
fees on her checking account. She wants to switch to a different account with a fee
of $0.25 per check and a $10.50 monthly maintenance fee. Haley wants to estimate
the fees for her new account. To the right is a summary of the checks she has written
from May to August.

A cone has a radius and height of 15 inches. What is the volume of the cone?

13+4+ 10 = 13+ 10 is that communicative property or associative property
​

In baseball, two statistics, the ERA (Earned Run Average) and the WHIP (Walks and Hits per Inning Pitched), are used to measure the quality of pitchers. For both measures, smaller values indicate higher quality. The following computer output gives the results from predicting ERA by using WHIP in a least-squares regression for the 2017 baseball season.

Variable DF Estimate SE T
Intercept 1 −5.0 0.26 −19.3
WHIP 1 6.8 0.14 47.4
Which of the following statements is the best interpretation of the value 6.8 shown in the output?

a. ERA is predicted to increase by 6.8 units for each 1 unit increase of WHIP.


b. WHIP is predicted to increase by 6.8 units for each 1 unit increase of ERA.


c. For a pitcher with 0 units of WHIP, the ERA is predicted to be approximately 6.8 units.


d. For a pitcher with 0 units of ERA, the WHIP is predicted to be approximately 6.8 units.


e. Approximately 6.8% of the variability in ERA is due to its linear relationship with WHIP.

The algebra teacher said if you square my age then subtract 23 times my age, the result is 50. How old is he?

3/4x + 2 = 4 2/3
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