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

What is the product?
7•(—4) • (—6)

1. —168
2. —3
3. 17
4. 168

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

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)

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

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

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


o 2
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What is the equation of the line that passes through the point (5,1) and has a slope
of 6/5?

3/4x + 2 = 4 2/3
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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?

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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?

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

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?

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

HELP PLS! WILL REWARD BRAINLIEST, TYSM !

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Haley has not been able to maintain the $1,200 minimum balance required to avoid
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of $0.25 per check and a $10.50 monthly maintenance fee. Haley wants to estimate
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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.

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Kainoa will need_____ pages.

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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:

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.