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
Mrac [35]
3 years ago
11

What Expression is equivalent to 8x+12

Mathematics
1 answer:
Eddi Din [679]3 years ago
7 0

Answer:

Step-by-step explanation:

Three other expressions that are equivalent to : 8 x - 12

  1 ) 4 ( x - 3 )

  2 ) 10 x - 2 x - 12

  3 ) 8 x - 4 - 8

You might be interested in
PLEASE HURRY MY MATH GRADE IS LIKE A WATERFALL RN Write a fraction setting the vertical length of the larger triangle over its h
konstantin123 [22]

Answer:

vertical length over horizontal length...y/x.....the larger triangle : 4/6 which reduces to 2/3 <== this represents ur slope

Step-by-step explanation:

7 0
3 years ago
The tensile strength of stainless steel produced by a plant has been stable for a long time with a mean of 72 kg/mm2 and a stand
Elanso [62]

Answer:

95% confidence interval for the mean of tensile strength after the machine was adjusted is [73.68 kg/mm2 , 74.88 kg/mm2].

Yes, this data suggest that the tensile strength was changed after the adjustment.

Step-by-step explanation:

We are given that the tensile strength of stainless steel produced by a plant has been stable for a long time with a mean of 72 kg/mm 2 and a standard deviation of 2.15.

A machine was recently adjusted and a sample of 50 items were taken to determine if the mean tensile strength has changed. The mean of this sample is 74.28. Assume that the standard deviation did not change because of the adjustment to the machine.

Firstly, the pivotal quantity for 95% confidence interval for the population mean is given by;

                         P.Q. = \frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n} } }  ~ N(0,1)

where, \bar X = sample mean strength of 50 items = 74.28

            \sigma = population standard deviation = 2.15

            n = sample of items = 50

            \mu = population mean tensile strength after machine was adjusted

<em>Here for constructing 95% confidence interval we have used One-sample z test statistics as we know about population standard deviation.</em>

So, 95% confidence interval for the population mean, \mu is ;

P(-1.96 < N(0,1) < 1.96) = 0.95  {As the critical value of z at 2.5% level of

                                                  significance are -1.96 & 1.96}  

P(-1.96 < \frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n} } } < 1.96) = 0.95

P( -1.96 \times {\frac{\sigma}{\sqrt{n} } } < {\bar X-\mu} < 1.96 \times {\frac{\sigma}{\sqrt{n} } } ) = 0.95

P( \bar X-1.96 \times {\frac{\sigma}{\sqrt{n} } } < \mu < \bar X+1.96 \times {\frac{\sigma}{\sqrt{n} } } ) = 0.95

<u><em>95% confidence interval for</em></u> \mu = [ \bar X-1.96 \times {\frac{\sigma}{\sqrt{n} } } , \bar X+1.96 \times {\frac{\sigma}{\sqrt{n} } } ]

                 = [ 74.28-1.96 \times {\frac{2.15}{\sqrt{50} } } , 74.28+1.96 \times {\frac{2.15}{\sqrt{50} } } ]

                 = [73.68 kg/mm2 , 74.88 kg/mm2]

Therefore, 95% confidence interval for the mean of tensile strength after the machine was adjusted is [73.68 kg/mm2 , 74.88 kg/mm2].

<em>Yes, this data suggest that the tensile strength was changed after the adjustment as earlier the mean tensile strength was 72 kg/mm2 and now the mean strength lies between 73.68 kg/mm2 and 74.88 kg/mm2 after adjustment.</em>

8 0
3 years ago
Thea has a key on her calculator marked $\textcolor{blue}{\bf\circledast}$. If an integer is displayed, pressing the $\textcolor
mel-nik [20]

Answer:

$9$

Step-by-step explanation:

Given: Thea enters a positive integer into her calculator, then squares it, then presses the $\textcolor{blue}{\bf\circledast}$ key, then squares the result, then presses the $\textcolor{blue}{\bf\circledast}$ key again such that the calculator displays final number as $243$.

To find: number that Thea originally entered

Solution:

The final number is $243$.

As previously the $\textcolor{blue}{\bf\circledast}$ key was pressed,

the number before $243$ must be $324$.

As previously the number was squared, so the number before $324$ must be $18$.

As previously the $\textcolor{blue}{\bf\circledast}$ key was pressed,

the number before $18$ must be $81$

As previously the number was squared, so the number before $81$ must be $9$.

6 0
3 years ago
Clarke has 2 1/2 gallons of juice. how many 1-pint containers can he fill? show your work and explain
Musya8 [376]

Answer:

12 cups

Step-by-step explanation:

3 0
3 years ago
How many one-fifths pieces of pizza are in 5 pizzas
SSSSS [86.1K]
10 1/5 times 5/1 add the zero
5 0
3 years ago
Read 2 more answers
Other questions:
  • what is the difference in the areas of a circle with radius 14 ft and a circle wit radius 10 ft? round your answer to the neares
    15·1 answer
  • Estimate the value of 98.5x13
    14·2 answers
  • Write an equation for the line parallel to the given line that contains <br> C(4,8);y=-3x+4
    14·1 answer
  • Differentiating Exponential Functions In Exercise, find the derivative of the function.
    11·1 answer
  • Between 9 p.m and 6:45 a.m, the water level in a swimming pool decreased by 3/16 in. Assuming that the water level decreased at
    13·1 answer
  • Substitute x=-2y into the expression 6x-7 and simplify
    11·2 answers
  • Sonia has 4.05 pounds of hamburger meat. She forms hamburgers that weigh 0.25 pounds each. What is the greatest number of 0.25-p
    10·1 answer
  • Find the missing side lengths.<br> Can someone help?
    5·1 answer
  • Amy is training for a half marathon. in practice, she runs 2 miles in 15 minutes. If she continues at the same rate, how many mi
    15·1 answer
  • Solve the following using completing the square method :
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!