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Alex17521 [72]
3 years ago
15

7. 3x + 6x - 2 =

Mathematics
2 answers:
Arada [10]3 years ago
7 0
All correct except that it is 12-10x not 12+10x.
irina [24]3 years ago
5 0

Answer:

9x -2

7s

12 + 10x

33x-4

Hope this helps :p

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Triangle ABC has side a= 12, b=16, and c=c find the measure of angle a to the nearest whole number
Aleks04 [339]
C would equal 20. because 12 times its self plus 16 times its self equals 400. then I square 400 and  got 20, which equals c 
5 0
3 years ago
25 Points!! The graph represents the first three terms in an arithmetic sequence.
Drupady [299]

Answer:

Step-by-step explanation:

y-1=\frac{4-1}{2-1}(x-1)\\y-1=3(x-1)\\y=3x-3+1\\y=3x-2

b.

an=an-1+3

C.

when x=15

y=3×15-2=45-2=43

a15=43

4 0
2 years ago
Read 2 more answers
Sixty-five randomly selected car salespersons were asked the number of cars they generally sell in one week. Fourteen people ans
Bond [772]

If Sixty-five randomly selected car salespersons were asked the number of cars they generally sell in one week. Then the mean of the sample is 3.75.

<h3>What is Mean?</h3>

The average of a group of numbers is simply defined as the mean. In statistics, the mean is regarded as one of the indicators of central tendency.

Sixty-five randomly selected car salespersons were asked the number of cars they generally sell in one week.

Fourteen people answered that they generally sell two cars; nineteen generally sell three cars; twelve generally sell four cars; nine generally sell five cars; eleven generally sell six cars.

Then the mean of the sample will be

\rm Mean = \dfrac{1}{N} \times \Sigma _{i}   \ \ x_if_i

Then the table is given below.

Then we have

\rm Mean = \dfrac{1}{65} \times (244)\\\\\\Mean = 3.7538\\\\Mean \approx 3.75

More about the mean link is given below.

brainly.com/question/521501

#SPJ1

5 0
2 years ago
Solve the following inequality.
melisa1 [442]

Answer:

A number line going from 27 to 37, open circle at 32, everything to the right is shaded

Step-by-step explanation:

-1/2p < -16

multiply each side by -2 (don't forget to switch inequality symbol)

p > 32

8 0
2 years ago
Read 2 more answers
Roberta is 20 years older than Julian. In 4 years, Roberta's age will be twice Julian's age.
mars1129 [50]

Step-by-step explanation:

There are 2 questions in one.

1)

<u>Roberta is 20 years older than Julian. In 4 years, Roberta's age will be twice Julian's age:</u>

  • r = j + 20
  • r + 4 = 2j

---------------------------

2)

<u>Roberta is twice as old as David. In 10 years, Roberta will be 8 less than three times David's present age:</u>

  • r = 2d
  • r + 10 = 3d - 8

Correct choice is A

8 0
2 years ago
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