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
Xelga [282]
3 years ago
13

BRAINLIESTT ASAP! PLEASE HELP ME :)

Mathematics
2 answers:
Rudiy273 years ago
8 0
<h3>Answer: D) none of the equations are identities</h3>

====================================

Work Shown:

I'm going to use x in place of theta.

let

f(x) = sin(x+2pi/4)

g(x) = sqrt(2)*sin(x)*cos(x)

Plug in x = 0

f(x) = sin(x+2pi/4)

f(0) = sin(0+2pi/4)

f(0) = sin(2pi/4)

f(0) = sin(pi/2)

f(0) = 1

and

g(x) = sqrt(2)*sin(x)*cos(x)

g(0) = sqrt(2)*sin(0)*cos(0)

g(0) = sqrt(2)*0*1

g(0) = 0

We see that f(0) = g(0) is not a true equation

Therefore, f(x) = g(x) is not true for all values of x, making it not be an identity. We can use a graph to compare f(x) and g(x) to see that they do not line up.

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

Let

h(x) = cos(x-pi/3)

i(x) = (3/sqrt(2))*(cos(x) - sin(x))

Plug in x = 0

h(x) = cos(x-pi/3)

h(0) = cos(0-pi/3)

h(0) = 0.5

and

i(x) = (3/sqrt(2))*(cos(x) - sin(x))

i(0) = (3/sqrt(2))*(cos(0) - sin(0))

i(0) = 2.12

Like with equation 1, we do not have an identity since h(0) does not equal i(0). We only need one counter example since an identity states that h(x) = i(x) for all values of x in the domain.

Makovka662 [10]3 years ago
7 0

Answer:

2

Step-by-step explanation:

You might be interested in
If this is equal to 8 find x
dolphi86 [110]
I think it is A. not sure though
8 0
3 years ago
Which expression is equivalent to (8x^3)^2/3
VARVARA [1.3K]

Answer: 64x^6/3

Step-by-step explanation:

(8x^3)^2/3

8^2(x^3)^3/3

64(x^3)^3/3

64x^6/3

Hope this helps, now you know the answer and how to do it. HAVE A BLESSED AND WONDERFUL DAY! As well as a great Superbowl Weekend! :-)

- Cutiepatutie ☺❀❤

4 0
3 years ago
The sequence is recursive. Find the value of the next term in the sequence -14,-8,-2,4,10
Tamiku [17]

Answer:

ur

Step-by-step explanation:

dotcom

4 0
3 years ago
What is the solution to this equation?
Ugo [173]

Answer:

C. x = 12

Step-by-step explanation:

5(12) + 9 = 69 - 3(12) = 33

18 + 15 = 33

6 0
3 years ago
Read 2 more answers
Lou deposited $3,500 into a savings account. The simple interest rate is 4%. How much interest will the account earn in 10 years
finlep [7]

Answer:

2 years : $280

10 years: $1400

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • In a circle an arc length 10 is intercepted by a central angle of 2/3 radius
    8·1 answer
  • Geometry math question
    15·1 answer
  • Jo sold 132 mugs, One quarter of the mugs were small , the rest were large . Jo made a profit of £2.45 on each small mug. She ma
    9·1 answer
  • Which expression is equivalent to -3.5(4x – 3)?
    7·2 answers
  • James has $32 and earns $10 per week for his allowance. What is the initial value for the scenario described?
    8·2 answers
  • What is the image point of (1,4)(1,4) after a translation left 5 units and down 3 units?
    5·1 answer
  • Rocky pays a flat rate of $5 per month plus $0.10 per minute for
    13·1 answer
  • After the neighborhood block party 2/4 of the brownies were left in the pan. Then Claire ate 1/6 of the leftovers. How much of t
    14·2 answers
  • 1.Which expression means “4 less than the product of 6 and 5”?
    15·2 answers
  • What is exactly 3/5 of a full rotation
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!