1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
e-lub [12.9K]
3 years ago
13

At a candy store, Erika

Mathematics
1 answer:
Readme [11.4K]3 years ago
6 0

Answer:

?

Step-by-step explanation:

You might be interested in
Please someone help me to prove this. ​
morpeh [17]

Answer:  see proof below

<u>Step-by-step explanation:</u>

Use the Double Angle Identity: sin 2Ф = 2sinФ · cosФ

Use the Sum/Difference Identities:

sin(α + β) = sinα · cosβ + cosα · sinβ

cos(α - β) = cosα · cosβ + sinα · sinβ

Use the Unit circle to evaluate: sin45 = cos45 = √2/2

Use the Double Angle Identities:   sin2Ф = 2sinФ · cosФ

Use the Pythagorean Identity: cos²Ф + sin²Ф = 1

<u />

<u>Proof LHS → RHS</u>

LHS:                                  2sin(45 + 2A) · cos(45 - 2A)

Sum/Difference: 2 (sin45·cos2A + cos45·sin2A) (cos45·cos2A + sin45·sin2A)

Unit Circle:    2[(√2/2)cos2A + (√2/2)sin2A][(√2/2)cos2A +(√2/2)·sin2A)]  

Expand:        2[(1/2)cos²2A  + cos2A·sin2A + (1/2)sin²2A]

Distribute:              cos²2A   + 2cos2A·sin2A + sin²2A  

Pythagorean Identity:    1 + 2cos2A·sin2A

Double Angle:                1 + sin4A

LHS = RHS:  1 + sin4A = 1 + sin4A   \checkmark

6 0
2 years ago
About how tall is a two-story building? 6 inches 20 feet 25 inches 6 feet
lara [203]

The most likely measurement for a two-story building would be 20 feet. 6 inches, 25 inches, and 6 feet all are way too short for a two-story building.

8 0
3 years ago
A is inversely proportional to b. If a=7.2 when b=-4, what will a equal when b=6?
Tpy6a [65]

Answer:

<h2>a = - 4.8</h2>

Step-by-step explanation:

To find the value of a when b=6 we must first find the relationship between them.

The statement

a is inversely proportional to b is written as

a \:  \:  \alpha  \:  \:  \frac{k}{b}

where k is the constant of proportionality

When a = 7.2 , b = -4

So we have

7.2=  \frac{k}{ - 4}

k = 7.2 × - 4

k = - 28.8

So the formula for the variation is

a =  -  \frac{28.8}{b}

When

b = 6

That's

a =  -  \frac{28.8}{6}

We have the final answer as

<h3>a = - 4.8</h3>

Hope this helps you

7 0
3 years ago
If u add 5 to me and then divide by 9,u get 3. What number amI?
STatiana [176]
You are 22. If you add 22+5 you get 27. And if you divide 27 by 9 you get 3. So it is 22
6 0
3 years ago
Read 2 more answers
Is (x+4)^2equivalent to 2x^2+8x+8
Mashcka [7]

Answer:

(x+4)^{2} = x^{2}+8x+16

Step-by-step explanation:

5 0
2 years ago
Other questions:
  • Which numbers are in order from least to greatest?
    11·1 answer
  • What are the multiples of 1/5
    8·2 answers
  • What are the solutions of x ^ 2 + 6x - 6 = 10 ? x = - 11 x = 1 x = - 11 x = - 1 x = - 8x = - 2 x = - 8x = 2
    15·1 answer
  • She buys 12 bottles of tomato juice bottle contains three-quarter cups of juice
    9·1 answer
  • (2) Last month, Coach Harvey ran 48 miles. This was 60% of his goal. How many miles did Coach Harvey set as his goal? (Set a pro
    6·1 answer
  • Cmannnnnnnnnnnnnnnnnnnnnnnnnnnnn
    12·2 answers
  • Find the value of r.
    14·1 answer
  • How is this possible? Explain and list the two different endpoints.
    5·1 answer
  • If you are starting with what you know about a large population and coming to a conclusion about a specific scenario, then which
    7·1 answer
  • Given the line segment AD. AD=24 BC=12,AB=CD Find AB ?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!