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
Ipatiy [6.2K]
3 years ago
9

I have been stuck on this problem for a while and tried different methods but still quite didn't get the answer. Can someone hel

p me? ​

Mathematics
1 answer:
timurjin [86]3 years ago
3 0

Answer:

x = 180degrees

Step-by-step explanation:

Given the expression;

cos²x + 3cosx + 2 = 0

Let P = cosx

P² + 3P + 2 = 0

Factorize

P² + 2p + P + 2 = 0

P(P+2)+(P+2) = 0

(P+2)(P+1) = 0

P = -2 and P = -1

Substitute P = cosx

cos x = -1

x = arccos(-1)

x = 180degrees

Hence the value of x is 180degrees

You might be interested in
30% × 750 =<br> (30 ÷ 100) × 750 =<br> (30 × 750) ÷ 100 =<br> 22,500 ÷ 100 =<br> 225;
Deffense [45]

Answer:

SOLVE IT UR SELF OR GET A CALCULATOR

Step-by-step explanation:

*urinates on ur property*

ANSWER : 225, 225, 225, 225, 225

7 0
3 years ago
Read 2 more answers
WILL MARK BRAINLIEST!!! 40 POINTS!! ACTUAL ANSWERS, PLZZZ
vitfil [10]

Answer:

Step-by-step explanation:

PART A:  2x^5 + 3x^2-3

It is a fifth degree polynomial because, the highest degree is 5 and it is in the standard form since, the polynomial is written in descending order i.e, from highest degree to the least

part B:

Closure property is  applicable to the subtraction of polynomials.

for example 2x^4+2x^2-5 is a polynomial and 2x^3+2x+2 is also a polynomial.

if we subtract these two polynomials, the outcome

2x^4-2x^3+2x^2-2x-7 is also a polynomial

4 0
3 years ago
Read 2 more answers
Which equation using x to represent time best represents the floor number of an elevator descending at a steady rate?
zepelin [54]
C. You'd be starting at a higher floor (positive number) and descending floors (negative number per x). If you assume x is time it's a little more logical and visual. 
5 0
3 years ago
Read 2 more answers
Cevabını yazarmısınız​
Anit [1.1K]

Answer:

it is side ways

Step-by-step explanation:

6 0
3 years ago
Solve for p.
Vinil7 [7]

Answer:

p = -2

Step-by-step explanation:

5p - 10 = + 4(1 + 3p)

first get rid of the bracquetes:

5p - 10 = + 4*1 + 4*3p

5p - 10 = + 4 + 12p

subtract left and right of = sign by 5p

5p -5p - 10 = + 4 + 12p -5p

0 - 10 = + 4 + (12p -5p)

subtract left and right of = sign by 4

-10 -4 = 4 -4 + ( 7p )

re arrange

7p + 0 = -14

divide left and right of = sign by 7

7/7 p = -14/7

p = -2

5 0
4 years ago
Read 2 more answers
Other questions:
  • Triangle ABC was reflected over line m, then dilated by a scale factor between 0 and 1. Which diagram illustrates these transfor
    15·2 answers
  • Can someone please help me with number 18 !! :(
    5·1 answer
  • On the weekend, I spent 6 3/5 hours reading and 1 1/4 hours at the gym. How much less time did I spend at the gym then reading?
    13·1 answer
  • The weight of strawberries follows a normal distribution with a mean weight of 12 grams and a standard deviation of 2.5 grams. I
    13·1 answer
  • If 604-72=___,then 532+___=604.Explain the process of checking your work.
    9·2 answers
  • Find 3mt(2m^2-3mt+r^2)
    8·1 answer
  • Solve the equation <br> 3|x – 2|+2 = 17
    12·1 answer
  • Mary walks from comer D to comer E to comer F on a city block that measures 264 feet wide and 900 feet long. Kate walks
    14·1 answer
  • Please help me and explain the anwser
    5·1 answer
  • To convert a temperature measured in degrees Fahrenheit to degrees Celsius, there is a formula: C=5/9(F-32)
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!