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
alex41 [277]
3 years ago
6

90+(x+5)+(2x-2)=180 Will you please help me solve this

Mathematics
2 answers:
pshichka [43]3 years ago
7 0

Answer:

29 is the answer.

Step-by-step explanation:

90 + (x + 5) + (2x - 2) = 180

=> 90 + x + 5 + 2x - 2 = 180

=> 93 + x + 2x = 180

=> 3x = 180 - 93

=> 3x = 87

=> 29

Therefore, 29 is the answer.

Zepler [3.9K]3 years ago
6 0

Step-by-step explanation:

  • 90 + (x + 5) + (2x - 2) = 180
  • x + 5 + 2x - 2 = 180 - 90
  • 3x + 3 = 90
  • 3x = 87
  • x = 29
You might be interested in
Families USA, a monthly magazine that discusses issues related to health and health costs, survey 19 of its subscribers. It foun
s344n2d4d5 [400]

Answer:

a

   $10,151   <  \mu  $11448.12

b

  n =  158

Step-by-step explanation:

From the question we are told that

    The  sample size is  n  =  19

    The  sample mean is  \= x  =$10,800

     The  standard deviation is  \sigma  =$1095  

    The  population mean is  \mu  =$225

     

Given that the confidence level is 99%  the level of significance is mathematically represented as

       \alpha  =  100 -99

      \alpha  = 1%

=>    \alpha =  0.01

Now the critical values of \alpha  = Z_{\frac{\alpha }{2} } is obtained from the normal distribution table as

        Z_{\frac{0.01}{2} } =  2.58

The reason we are obtaining values for \frac{\alpha }{2} is because \alpha is the area under the normal distribution curve for both the left and right tail where the 99% interval did not cover while \frac{\alpha }{2}  is the area under the normal distribution curve for just one tail and we need the  value for one tail in order to calculate the confidence interval

Now the margin of error is obtained as

     MOE  =  Z_{\frac{\alpha }{2} } *  \frac{\sigma }{\sqrt{n} }

substituting values

    MOE  =  2.58*  \frac{1095 }{\sqrt{19} }

     MOE  =  648.12

The  99% confidence interval for the population mean yearly premium is mathematically represented as

    \= x -MOE  <  \mu <  \= x +MOE

substituting values

   10800 -648.12  <  \mu <  10800 + 648.12

    10800 -648.12  <  \mu <  10800 + 648.12

   $10,151   <  \mu  $11448.12

The  largest sample needed is mathematically evaluated as

      n =  [\frac{Z_{\frac{\alpha }{2}    } *  \sigma }{\mu} ]

substituting values

       n =  [    \frac{ 2.58  *  1095}{225} ]^2

      n =  158

6 0
4 years ago
PLEASE HELP PLEASE PLEASE
vovikov84 [41]

The central angle is about 74.8426. Try using the website Omni to help you out. It contains an arc length calculator.

6 0
3 years ago
Read 2 more answers
What is the distance between 4+3i and 6-2i
Reil [10]

4=3i ----> (4,3)  6-2i ------> (6,-2)

x1    y1               x2    y2

(4   ,   3)            (6   ,   -2)   d=√(x2-x1)^2 +(y2-y1)^2

d=√(6-4)^2+(-2-3)^2 -----> d=√2^2+(-5)^2 ----> d=√29

7 0
3 years ago
There are 350 students at a middle school dance, where ratio of 7th graders to 8th graders is 3:4 how many of the students at th
Mademuasel [1]

Answer:

150 7th Graders and 200 8th graders

Step-by-step explanation:

Basically, add the parts of the ratio together and create 7. Then, to find out how much 1 part is equal to, divide the amount of students by the number of parts - so it would be like 350/7 = 50.

So now you know that 1 part is equal to 50 students. From here, you can multiply the two amounts of parts by 50.

3 x 50 = 150 7th Graders

4 x 50 = 200 8th Graders

4 0
3 years ago
How did Captain Hook Get Injured?
BARSIC [14]
Injured by Peter in the battle. He was smacked in the face by a Janet
8 0
3 years ago
Read 2 more answers
Other questions:
  • Name the slope and one point that is on the line
    5·1 answer
  • A container of motor oil is supposed to contain 1000 ml of oil. a quality control engineer is concerned about the variability of
    14·1 answer
  • Nylah spent $16.72 on 12 ice cream bars. Her cost included $1.24 sales tax. How much did each ice cream bar cost before the sale
    14·2 answers
  • Ava's bedroom rug is 2 3/4 feet long and 2 1/2 feet wide. What is the area of the rug
    5·1 answer
  • Evaluate each permutation 7p3
    10·1 answer
  • The number of points that would fit on the period at the end of this sentence can be counted. True False
    10·2 answers
  • Please answer number #3 its my last question
    7·1 answer
  • PLEASE HELO MEEEE! THANK YOU
    12·2 answers
  • FreezeFrame, a social networking site, sent out a survey in which the users simply click a response to join the sample. One of t
    8·1 answer
  • Brainliest if correct
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!