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
Andreas93 [3]
3 years ago
12

The value 5pi/24 is a solution for the equation 4 cos^2 (4x)-3=0. True or false

Mathematics
1 answer:
Margaret [11]3 years ago
5 0

Let's check.

x = 5π/24

4x = 5π/6

cos 4x = cos(5π/6) = cos 150° = -√3/2

cos² 4x = (-√3/2)^2 = 3/4

4 cos² 4x  -3  = 4 (3/4) - 3 = 0

Answer: TRUE

You might be interested in
This number of tiles to make a rectangle that is 5 tiles wide
Artemon [7]
Its 10 i just times by 2 then i got a answer then i looked and said 5 each side seems right
8 0
3 years ago
Please answer this question
Nataliya [291]
Change in temperature = initial - final.
5 -0 = 5.
5°F represents the change in temperature.

hope this helps :) (please mark brainliest!)
6 0
3 years ago
Solve for equation √-5p=√24-p
blsea [12.9K]

Answer:


Step-by-step explanation:

Algebra Calculator | Latest | Discuss | About | Help | Translation

25,219,829 solved | 850 online

p2-5p-24=0  

Two solutions were found :

    p = 8

    p = -3  

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "p2"   was replaced by   "p^2".  

Step by step solution :

Step  1  :

Trying to factor by splitting the middle term

1.1     Factoring  p2-5p-24  

The first term is,  p2  its coefficient is  1 .

The middle term is,  -5p  its coefficient is  -5 .

The last term, "the constant", is  -24  

Step-1 : Multiply the coefficient of the first term by the constant   1 • -24 = -24  

Step-2 : Find two factors of  -24  whose sum equals the coefficient of the middle term, which is   -5 .

      -24     +     1     =     -23  

      -12     +     2     =     -10  

      -8     +     3     =     -5     That's it

Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above,  -8  and  3  

                    p2 - 8p + 3p - 24

Step-4 : Add up the first 2 terms, pulling out like factors :

                   p • (p-8)

             Add up the last 2 terms, pulling out common factors :

                   3 • (p-8)

Step-5 : Add up the four terms of step 4 :

                   (p+3)  •  (p-8)

            Which is the desired factorization

Equation at the end of step  1  :

 (p + 3) • (p - 8)  = 0  

Step  2  :

Theory - Roots of a product :

2.1    A product of several terms equals zero.  

When a product of two or more terms equals zero, then at least one of the terms must be zero.  

We shall now solve each term = 0 separately  

In other words, we are going to solve as many equations as there are terms in the product  

Any solution of term = 0 solves product = 0 as well.

Solving a Single Variable Equation :

2.2      Solve  :    p+3 = 0  

Subtract  3  from both sides of the equation :  

                     p = -3

Solving a Single Variable Equation :

2.3      Solve  :    p-8 = 0  

Add  8  to both sides of the equation :  

                     p = 8

8 0
3 years ago
How to solve this one​
ladessa [460]

A dotted line is not included in the solution so there is no equal sign.

The blue area is to the right of the dotted line so the solution is >

The line crosses the x axis at -2

The answer is : x-y > -2

4 0
2 years ago
How many terms are in the expression 5x+3y-2z​
Viktor [21]

Answer:

three?

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • A bag has 9 marbles in it. 6 of the marbles are Red and 3 of the marbles are Green. What is the ratio probability of pulling a R
    12·1 answer
  • If A and B are independent events, P(A) = 0.4, and P(B) = 0.5, what is P(BIA)?
    8·1 answer
  • If two sides of a triangle are 9 and 13, the third side may be
    13·1 answer
  • In triangle FGH shown below, what is the measure of angle F? (giving brainliest and thanks to all!)
    10·2 answers
  • Use the distributive property to write an equivalent expression. (6+8)⋅x
    10·2 answers
  • WALLAHI HELP ME PLEASE
    7·1 answer
  • Fuffy spent $7.20 on 4 dozen pencils. How much did each pencil cost
    5·1 answer
  • Steven and his family ordered a meal that cost $136.50. Steven paid 14% sales tax and left a 20% tip on $136.50. What was the to
    8·1 answer
  • Help me out for a brainly
    12·1 answer
  • What is the length of the hypotenuse?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!