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
Marta_Voda [28]
2 years ago
15

Picture above please solve

Mathematics
2 answers:
Y_Kistochka [10]2 years ago
6 0

Answer:

1) 3x(3x-1)

2)5(9x^2-3x+1)

Andrei [34K]2 years ago
6 0

Answer:

  1. 3x(3x - 1)
  2. 5(9x^{2} - 3x + 1)  

I hope this helps!

You might be interested in
From home, Mary’s work is two thirds along the way to training. Training is 2.5km from work. Mary normally goes to work, then tr
polet [3.4K]
First thing to do is to illustrate the problem, Since it was mentioned that work was along the way to training, the order is shown in the picture. Mary's home and workplace are nearer compared to her training center. It is also mentioned that the distance between work and home, denoted as x, is 2/3 of the total distance from home to training. The total distance is (x + 2.5). Thus,

x = 2/3(x+2.5)
x = 2/3 x + 5/3
1/3 x = 5/3
x = 5 km

Thus, the distance from home to work is 5 km. This means that Mary has to walk this distance twice to return home to get her shoes. Then, she will travel again the total distance of 5+2.5 = 7.5 km to get to her training center. So,

Total distance = 2(5km) + 7.5 km
Total distance = 17.5 km

3 0
3 years ago
Based on a sample of 100 employees a 95% confidence interval is calculated for the mean age of all employees at a large firm. Th
babymother [125]

Answer:

a

\= x  =  40.85

b

E = 5.85

Ca  

   t_c =  2.08

Cb

   t_c  =   1.282

Explanation:

From the question we are told that

     The sample size is n  =  100

     The upper limit of the 95% confidence interval is  b =  47.2 years

     The lower limit of the 95% confidence interval is   a =  34.5 years

Generally the sample mean is mathematically represented as

         \= x  =  \frac{a + b }{2}

=>    \= x = \frac{47.2 + 34.5 }{2}

=>    \= x  =  40.85

Generally the margin of error is mathematically represented as

         E =  \frac{b- a }{ 2}

=>      E =  \frac{47.2- 34.5 }{ 2}

=>      E = 5.85

Considering question C a  

From the question we are told the confidence level is  90% , hence the level of significance is    

      \alpha = (100 - 90 ) \%

=>   \alpha = 0.10

The  sample size is  n =  22

Given that the sample size is not sufficient enough i.e n < 30 we will make use of the student t distribution table  

Generally the degree of freedom is mathematically represented as

           df =  n- 1

=>        df =  22 - 1

=>        df =  21

Generally from the student  t  distribution table the critical value  of  \frac{\alpha }{2} at a degree of freedom  of  21 is  

   t_c =t_{\frac{\alpha }{2} ,  21  } =  2.08

Considering question C b

From the question we are told the confidence level is  80% , hence the level of significance is    

      \alpha = (100 - 80 ) \%

=>   \alpha = 0.20

Generally from the normal distribution table the critical value  of  \frac{\alpha }{2} is  

   t_c  =Z_{\frac{\alpha }{2} } =  1.282

4 0
2 years ago
If candler and oteen are 3 1/2 inches apart on the map, what is the actual distance between Candler and oteen in miles
givi [52]

They would be 0.00005524 miles apart because 1 in equals 0.00001578 miles

6 0
3 years ago
Is the square root of 6 a solution to x squared equals 36
Simora [160]
6^2 = 36 
thats what you meant?
7 0
3 years ago
Read 2 more answers
Find the area of each triangle. Round values to the nearest tenth. Show your math thinking.
NeTakaya
7 x 7 = 49. 49/2 = 24.5
The area is 24.5 units squared.
4 0
2 years ago
Other questions:
  • What is the answer for x+b over 4
    13·1 answer
  • Which pair of ratios are equal?6/15 and 3/17 3/4 and 9/11 2/5 and 12/35 or 2/3 and 8/12
    9·1 answer
  • Name:<br>Solve the equations.<br>- 124 + x = 46 - 9x​
    10·1 answer
  • Elmer has a collection of 300 fossils. Of these, 21% percent are fossilized snail shells.
    9·2 answers
  • What is the formula of (x^3 + y^3) as a factorized form?​
    7·1 answer
  • After 3 points have been added to every score in a sample, the mean is found to be M 5 83 and the standard deviation is s 5 8. W
    12·1 answer
  • The equation y = – 5x +6 represents a
    11·1 answer
  • Evaluate the following:81¾​
    6·1 answer
  • 3 • 2 • 1 • 0 = 0 <br><br> What property is illustrated by this question?
    7·1 answer
  • What’s 5(x-4)+2 as a verbal expression?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!