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
BARSIC [14]
2 years ago
10

Solve for x: (5 points) negative 3 over 2, multiplied by x minus 9 equals negative 27 a −24 b −12 c 11 d 12

Mathematics
1 answer:
umka21 [38]2 years ago
4 0

Answer: b, 12

explanation: combine -3/2 * x and u get -3/2x. then isolate the variable by doing the inverse of subtraction on both sides. (add 9 on both sides). then do the inverse of multiplication on both sides. (divide by -3/2 on both sides)

You might be interested in
Does anyone know the answer?
Serhud [2]

Answer:

6a {}^{2}  - 2c + 2a {}^{2}  - 2c {}^{2}  \\ 8a {}^{2}  - 2c {}^{2}  - 2c

Good luck!

Intelligent Muslim,

From Uzbekistan.

8 0
2 years ago
The diameter of a particle of contamination (in micrometers) is modeled with the probability density function f(x)= 2/x^3 for x
natulia [17]

Answer:

a) 0.96

b) 0.016

c) 0.018

d) 0.982

e) x = 2

Step-by-step explanation:

We are given with the Probability density function f(x)= 2/x^3 where x > 1.

<em>Firstly we will calculate the general probability that of P(a < X < b) </em>

       P(a < X < b) =  \int_{a}^{b} \frac{2}{x^{3}} dx = 2\int_{a}^{b} x^{-3} dx

                            = 2[ \frac{x^{-3+1} }{-3+1}]^{b}_a   dx    { Because \int_{a}^{b} x^{n} dx = [ \frac{x^{n+1} }{n+1}]^{b}_a }

                            = 2[ \frac{x^{-2} }{-2}]^{b}_a = \frac{2}{-2} [ x^{-2} ]^{b}_a

                            = -1 [ b^{-2} - a^{-2}  ] = \frac{1}{a^{2} } - \frac{1}{b^{2} }

a) Now P(X < 5) = P(1 < X < 5)  {because x > 1 }

     Comparing with general probability we get,

     P(1 < X < 5) = \frac{1}{1^{2} } - \frac{1}{5^{2} } = 1 - \frac{1}{25} = 0.96 .

b) P(X > 8) = P(8 < X < ∞) = 1/8^{2} - 1/∞ = 1/64 - 0 = 0.016

c) P(6 < X < 10) = \frac{1}{6^{2} } - \frac{1}{10^{2} } = \frac{1}{36} - \frac{1}{100 } = 0.018 .

d) P(x < 6 or X > 10) = P(1 < X < 6) + P(10 < X < ∞)

                                = (\frac{1}{1^{2} } - \frac{1}{6^{2} }) + (1/10^{2} - 1/∞) = 1 - 1/36 + 1/100 + 0 = 0.982

e) We have to find x such that P(X < x) = 0.75 ;

               ⇒  P(1 < X < x) = 0.75

               ⇒  \frac{1}{1^{2} } - \frac{1}{x^{2} } = 0.75

               ⇒  \frac{1} {x^{2} } = 1 - 0.75 = 0.25

               ⇒  x^{2} = \frac{1}{0.25}   ⇒ x^{2} = 4 ⇒ x = 2  

Therefore, value of x such that P(X < x) = 0.75 is 2.

8 0
2 years ago
Verifying Trig Functions
anzhelika [568]

Answer:

The answer to your question is below

Step-by-step explanation:

                csc α - cot α = \frac{sin \alpha }{1 + cos \alpha }

Work with the left part

                \frac{1}{sin\alpha } - \frac{cos \alpha }{sin \alpha}

Simplify

                \frac{1 - cos\alpha }{sin\alpha }

Multiply by the reciprocal

 \frac{1 - cos\alpha }{sin \alpha } x \frac{1 + cos\alpha }{1 + cos\alpha }                                  

Simplify

\frac{1 - cos^{2}\alpha}{sin\alpha (1 + cos\alpha)}

Remember that

                 sin²α = 1 -cos²α

Substitute the previous equation

\frac{sin^{2}\alpha }{sin\alpha(1 + cos\alpha ) }

Simplify

\frac{sin\alpha}{1 + cos \alpha}      

The identity i proved.            

5 0
3 years ago
Someoneeee pleaseeee helpppp me outtttttt!!!!!!!
arlik [135]

Answer:

cos X = \frac{5}{13}

Step-by-step explanation:

simplify 15/39

3 0
2 years ago
Read 2 more answers
Divide (x4 – 11x3 – 49x2 + 899x – 2506) ÷ (x – 8).
pickupchik [31]
Okay first make sure you change negative 8 to a positive 8. 
Set the problem up 8  -11 -49 899 -2506
                                    __________________
8  -11 -49   899    -2506
          -88 -1096    -1576
   ____________________
    -11 -137 -197     -4082

Your answer will be 
-11x^3 - 137x^2 - 197x - 4082
6 0
3 years ago
Other questions:
  • Which of the following statements explains how to solve for l using the formula A = lw, when A = 28 and w = 2? Divide 28 by 2. D
    12·1 answer
  • RIGHT ANSWERS ONLY!!!!!!!
    12·2 answers
  • You work for a marketing firm that has a large client in the automobile industry. You have been asked to estimate the proportion
    14·1 answer
  • Whats the cube root of 234
    13·2 answers
  • Line m has no y-intercept, and its x-intercept is (3,0). line n has no x-intercept, and its y-intercept is (0-,4).
    11·1 answer
  • Solve for x and show work.
    10·1 answer
  • 6 more than the product of a number x and 5 is 21
    8·1 answer
  • Solve the equation 7x=3^2-1
    10·1 answer
  • What is the slope and the y intercept of the line on the graph below?
    12·1 answer
  • What’s y=1/2x+5. Domain=4,7,11,12
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!