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
Korolek [52]
10 months ago
12

Multi step equation -3x-2=-1

Mathematics
1 answer:
Shkiper50 [21]10 months ago
8 0

x = -1/3

Explanation:

-3x-2=-1

collect like terms by adding +2 to both sides:

-3x -2 + 2 = -1 + 2

-3x = 1

Divide both sides by the coefficient of x:

coefficient of x = -3

-3x/-3 = 1/-3

x = -1/3

You might be interested in
Evaluate each finite series for the specified number of terms. 1+2+4+...;n=5
zaharov [31]

Answer:

31

Step-by-step explanation:

The series are given as geometric series because these terms have common ratio and not common difference.

Our common ratio is 2 because:

1*2 = 2

2*2 = 4

The summation formula for geometric series (r ≠ 1) is:

\displaystyle \large{S_n=\frac{a_1(r^n-1)}{r-1}} or \displaystyle \large{S_n=\frac{a_1(1-r^n)}{1-r}}

You may use either one of these formulas but I’ll use the first formula.

We are also given that n = 5, meaning we are adding up 5 terms in the series, substitute n = 5 in along with r = 2 and first term = 1.

\displaystyle \large{S_5=\frac{1(2^5-1)}{2-1}}\\\displaystyle \large{S_5=\frac{2^5-1}{1}}\\\displaystyle \large{S_5=2^5-1}\\\displaystyle \large{S_5=32-1}\\\displaystyle \large{S_5=31}

Therefore, the solution is 31.

__________________________________________________________

Summary

If the sequence has common ratio then the sequence or series is classified as geometric sequence/series.

Common Ratio can be found by either multiplying terms with common ratio to get the exact next sequence which can be expressed as \displaystyle \large{a_{n-1} \cdot r = a_n} meaning “previous term times ratio = next term” or you can also get the next term to divide with previous term which can be expressed as:

\displaystyle \large{r=\frac{a_{n+1}}{a_n}}

Once knowing which sequence or series is it, apply an appropriate formula for the series. For geometric series, apply the following three formulas:

\displaystyle \large{S_n=\frac{a_1(r^n-1)}{r-1}}\\\displaystyle \large{S_n=\frac{a_1(1-r^n)}{1-r}}

Above should be applied for series that have common ratio not equal to 1.

\displaystyle \large{S_n=a_1 \cdot n}

Above should be applied for series that have common ratio exactly equal to 1.

__________________________________________________________

Topics

Sequence & Series — Geometric Series

__________________________________________________________

Others

Let me know if you have any doubts about my answer, explanation or this question through comment!

__________________________________________________________

7 0
2 years ago
Pleasee help asap! will give brainiest
AfilCa [17]

Answer:x=-0.8

5x - 7 =3

      -7   -7

         5/5x  = -4/5

                     x = -0.8

8 0
3 years ago
What’s equivalent to -60\22
Mila [183]

Answer:

-30/11

Step-by-step explanation:

5 0
3 years ago
Solve pls brainliest
diamong [38]

Answer:

3/8 = 9/24

1/3 = 8/24

3/8 > 1/3

Step-by-step explanation:

3/8 = 9/24 (multiply both numerator and denominator by 3)

1/3 = 8/24 (multiply both numerator and denominator by 8)

9/24 > 8/24

6 0
1 year ago
One puppy weighs 12 ounces. Another puppy<br>weighs 5/8 pound. Which puppy weighs more? Explain.​
Colt1911 [192]
12 ounces = to .75 lbs
5/8lbs = 10 ounces

12 ounces
8 0
3 years ago
Other questions:
  • What true bearing is WSW equivalent to?
    5·1 answer
  • Help ;-;........ ;v;
    13·2 answers
  • pete is a furniture refinisher. to paint a chest of drawers, he needs 1/2 gallon of paint. he has 1 quart. how many more quarts
    9·1 answer
  • Keshawn is asked to compare and contrast the domain and range for the two functions.
    15·1 answer
  • Me. Hamm’s salary has increased by 25% over the last 10 years. If his original salary was 28000 per year , what is his current s
    15·2 answers
  • Which of the following are reasonable answers for the product of two negative numbers and a positive number? Select all that app
    14·1 answer
  • Is this correct? My answer was 61.5
    10·1 answer
  • A group of 10 students participate in chess club, karate club, or neither
    8·1 answer
  • For f(x) = 0.01(2)x, find the average rate of change from x = 12 to x = 15. (2 points)
    11·1 answer
  • Joaquin is constructing the perpendicular bisector of ab. What should be his first step?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!