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
cluponka [151]
9 months ago
5

I need help with this practice problem solving This is trigonometry from my ACT prep guide

Mathematics
1 answer:
Novay_Z [31]9 months ago
6 0

Take into account, that in general, a cosine function of amplitude A, period T and vertical translation b, can be written as follow:

f(x)=A\cos (\frac{2\pi}{T}x)+b

In the given case, you have:

A = 4

T = 3π/4

b = -3

By replacing you obtain:

\begin{gathered} f(x)=4\cos (\frac{2\pi}{\frac{3\pi}{4}}x)-3 \\ f(x)=4\cos (\frac{8}{3}x)-3 \end{gathered}

Hence, the answer is:

f(x) = 4cos(8/3 x) - 3

You might be interested in
Solve the following system of equations by elimination​
olya-2409 [2.1K]

Answer:

y = -6

x = 1

Step-by-step explanation:

-x + 2y = -13

-x - 2y = 11

Sum the equations:

-x -x = -2x

+2y - 2y = 0

-13 + 11 = -2

then

-2x = -2

x = -2/-2

x = 1

from the first eq.

-x + 2y = -13

-1 + 2y = -13

2y = -13 + 1

2y = -12

y = -12/2

y = -6

check:

from the second eq.

-x -2y = 11

-1 -(2*-6) = 11

-1 -(-12) = 11

-1 + 12 = 11

5 0
2 years ago
What is the correct here??​
Oliga [24]

Answer:

There is no mistake.

4 0
2 years ago
Read 2 more answers
Which one of the following is NOT true about the expression shown
garri49 [273]

Answer:

A) The expression is a trinomial.

Step-by-step explanation:

If the degree is 2, the expression would be a binomial, not a trinomial. If this answer is correct, please make me Brainliest!

7 0
2 years ago
Can you please help me
kirill [66]

Answer:

b

Step-by-step explanation:

3 0
2 years ago
I really need help on how to complete the square
Leya [2.2K]
Omg what level are you that is so hard
4 0
3 years ago
Other questions:
  • A male hippopotamus can weigh up to 10,000 pounds. How many tons is 10,000 pounds
    11·3 answers
  • How to write (8x100,000)+4x1,000)+(6x1) in word form
    6·2 answers
  • A punch recipe that serves 24 people calls for 4 liters of lemon-lime soda, 2 pints of sherbet, and 6 cups of ice. How much of e
    14·1 answer
  • Can someone help me expand this polynomial?
    10·2 answers
  • Find the measure of angle y
    14·1 answer
  • What is 6.1 - 18.7 ?​
    8·2 answers
  • Hey all!
    14·1 answer
  • The management of a supermarket wants to find if there is a relationship between the number of times a specific product is promo
    11·1 answer
  • If a 12-foot-tall object casts a 9-foot shadow, how long a shadow would a 4-foot-tall object cast at the same time and place
    14·1 answer
  • What is the initial value of the equation below?<br> y=-3x +5
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!