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
anyanavicka [17]
3 years ago
9

Solve for x. Enter the solutions from least to greatest. (2x + 4) (3x − 2) = 0

Mathematics
1 answer:
laila [671]3 years ago
7 0

Answer:

-2 and .66666

Step-by-step explanation:

2(3x^2+4x-4)=0

2(3x^2+6x-2x-4)=0

2(x+2)(3x-2)=0

x=-2, .6666

You might be interested in
6.3.6. Among the early attempts to revisit the death postponement theory introduced in Case Study 6.3.2 was an examination of th
kakasveta [241]

Answer:

So the Null hypothesis is rejected in this case

Step-by-step explanation:

  The number of celebrities is  n = 348

   

So to solve this we would assume that p is the percentage of people that died on the month preceding their birth month  

     

  Generally if there is no death postponement then p will be mathematically evaluated as

            p = \frac{1}{12}  

This implies the probability of date in one month out of the 12 months

Now from the question we can deduce that the hypothesis we are going to be testing is  

  Null Hypothesis  \  \  H_0 : p = 0.083

This is a hypothesis is stating that a celebrity  dies in the month preceding their birth

  Alternative \ Hypothesis  H_1 : p < 0.083

   This is a hypothesis is stating that a celebrity does not die in the month preceding their birth

       is c is the represent probability for each celebrity which either c = 0 or c = 1

Where c = 0 is that the probability  that the celebrity does not die on the month preceding his/ her birth month

     and  c =  1  is that the probability  that the  celebrity dies on the month preceding his/ her birth month

  Then it implies that

   for  

       n= 1 + 2 + 3 + .... + 348  celebrities

Then the sum of c for each celebrity would be  c_s = 16

i.e The number of celebrities that died in the month preceding their birth month

We are told that the significance level is  \alpha  = 0.05, the the z value of \alpha is

              z_{\alpha } =  1.65

This is obtained from the z-table

Since this test is carried out on the left side of the area under the normal curve then the critical value will be

                 z_{\alpha } = - 1.65

So what this implies is that  H_o will be rejected if

                z \le -1.65

Here z is the test statistics

Now z is mathematically evaluated as follows

                  z = \frac{c - np}{\sqrt{np_o(1- p_o)} }

                z = \frac{16 - (348 *0.083)}{\sqrt{348*0.083 (1- 0.083)} }

                z =-2.50

From our calculation we see that the value of z is less than -1.65 so the Null hypothesis will be rejected

   Hence this tell us that the  evidence provided is not enough to conclude  that 16 celebrities died a month to their birth month

8 0
3 years ago
Hey anyone know the answer?
aivan3 [116]

Answer:

DC

Step-by-step explanation:

ABCDE ≅ GHJDF

GH ≈ AB

DJ ≈ DC

4 0
3 years ago
Read 2 more answers
Please help me answer this :)! <br> I will give braisnlt
djyliett [7]

Answer: I don't see anything

Step-by-step explanation:

3 0
2 years ago
Solve then check solution
klio [65]

Answer:

1. z = 128

2. x = 4.2

3. c = 10

4. w = 100

5. a = 95.2

Step-by-step explanation:

1. Solve for z:

z/16 = 8

Multiply both sides of z/16 = 8 by 16:

(16 z)/16 = 16×8

(16 z)/16 = 16/16×z = z:

z = 16×8

16×8 = 128:

Answer:  z = 128

_____________________________________________________

2. Solve for x:

3.5 x = 14.7

Divide both sides of 3.5 x = 14.7 by 3.5:

(3.5 x)/3.5 = 14.7/3.5

3.5/3.5 = 1:

x = 14.7/3.5

14.7/3.5 = 4.2:

Answer:  x = 4.2

____________________________________________

3. Solve for c:

32 = 3.2 c

32 = 3.2 c is equivalent to 3.2 c = 32:

3.2 c = 32

Divide both sides of 3.2 c = 32 by 3.2:

(3.2 c)/3.2 = 32/3.2

3.2/3.2 = 1:

c = 32/3.2

32/3.2 = 10:

Answer:  c = 10

__________________________________________________

4. Solve for w:

(2 w)/5 = 40

Multiply both sides of (2 w)/5 = 40 by 5/2:

(5×2 w)/(2×5) = 5/2×40

5/2×2/5 = (5×2)/(2×5):

(5×2)/(2×5) w = 5/2×40

5/2×40 = (5×40)/2:

(5×2 w)/(2×5) = (5×40)/2

(5×2 w)/(2×5) = (2×5)/(2×5)×w = w:

w = (5×40)/2

2 | 2 | 0

| 4 | 0

- | 4 |  

| | 0

| - | 0

| | 0:

w = 5×20

5×20 = 100:

Answer: w = 100

___________________________________________________

5. Solve for a:

a/14 = 6.8

Multiply both sides of a/14 = 6.8 by 14:

(14 a)/14 = 14×6.8

(14 a)/14 = 14/14×a = a:

a = 14×6.8

14×6.8 = 95.2:

Answer:  a = 95.2

6 0
2 years ago
7,10) and (7,20). Slope or no slope
hoa [83]

Answer: No slope

Step-by-step explanation: The line is going straight down.

3 0
2 years ago
Read 2 more answers
Other questions:
  • Write the slope intercept form of the equation of the line through the given points (-1,-5) (0,3) make sure your answer is in y=
    8·2 answers
  • Melanie had 255 dollars to spend on 8 books. After buying them she had 15 dollars. How much did each book cost?
    13·2 answers
  • 7-2+x=12<br> 5+x=12<br> Ggjkm
    13·1 answer
  • Point A has an x coordinate of −2 and lies in a circle with a center at (0, 0) and a radius of 5. To the nearest tenth, what is
    6·1 answer
  • Which of the following is the SIMPLEST form of 1000:50 in whole number terms? 200:1 20:1 950:1 2:1
    10·1 answer
  • List the names and measures for pairs of same-side interior angles. Then find the sum of the measures for each pair. What is the
    5·2 answers
  • Factor the algebraic expression 21a + 9
    6·2 answers
  • Solve 2sinx^2-5sinx-3=0
    5·1 answer
  • Emily goes to the gym every 4 days. Scott goes to the gym every 14 days. Emily and Scott both go to the gym today. How many days
    14·1 answer
  • A set of pens sells for $6.25 and costs $3.50 to make. Forty-two percent of the profit (the difference between the purchase pric
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!