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
Alchen [17]
3 years ago
13

Find the sum of the first 21 terms of the arithmetic sequence 5, -2, -9.

Mathematics
2 answers:
Vadim26 [7]3 years ago
6 0

Answer:

-1365

Step-by-step explanation:

The difference is -7, so you apply that to each number to get your answer.

USPshnik [31]3 years ago
5 0
The correct answer is idk for me
You might be interested in
nya wants to buy a sweater that had an original price of 55. the sweater is now discounted 20% and the sales tax rate is 5.5%. h
kondaur [170]

Answer:

Step-by-step explanation:

55 - 20% = 44

5.5% of 44 = 2.42

2.42 + 44 = 46.42

hope this helps. :]

8 0
2 years ago
Which of the following graphs represents the solution to the inequality (x−2)−2≥−6 ?
sertanlavr [38]
Can u be more specific on the options? Cuz there’s nothing for ABCD.
8 0
2 years ago
How many solutions does the system have? <br> y=3x-1<br> y=-2x+4
guapka [62]

Answer:

This system has one answer.

Step-by-step explanation:

This system only has one answer which are: x=1  y=2

Hope this helped! :)

8 0
3 years ago
Read 2 more answers
Behind my math class help pls
vladimir2022 [97]

Answer:

Please check the explanation.

Step-by-step explanation:

Part a)

Given that the two parallel lines are crossed by a transversal line.

Given that

m∠2 = 2x + 54 and m∠6 = 6x - 11

Angle ∠2 and ∠6 are corresponding angles.

Corresponding angles are congruent.

Thus,

m∠2 = m∠6

2x + 54 = 6x - 11

flipe the equation

6x - 11 = 2x + 54

subtract 2x from both sides

6x - 2x - 11 = 2x - 2x + 54

4x - 11 = 54

adding 11 to both sides

4x - 11 + 11 = 54 + 11

4x = 65

dvide both sides by 4

4x/4 = 65/4

x = 16.2500    (round to 4 decimal places)

Part b)

We have already determined

x = 16.2500

Given

m∠2 = 2x + 54

substitute x = 16.2500 in the euation

        = 2(16.2500) + 54

        = 86.5°

As angle ∠2 and angle ∠1 lie on a straight line. Hence, the sum of their angles must be 180°.

i.e.

m∠1 + m∠2 = 180°

substituting m∠2 =  86.5° in the equation

m∠1 + 86.5°  = 180°

subtracting 86.5° from both sides

m∠1 + 86.5° - 86.5° = 180° - 86.5°

m∠1 = 93.5°

Therefore, the measure of angle m∠1 is:

  • m∠1 = 93.5°
4 0
3 years ago
Please tell me how much it would be for 1
Monica [59]

Answer:

small

per Oz

0.269 dollars

medium

per Oz

0.227 dollars

large

per Oz

0.1845 dollars

3 0
3 years ago
Read 2 more answers
Other questions:
  • Margie received her store order on 12/3/16 at 4AM. She just opened one of the
    14·1 answer
  • Also another answer choice, D 9.9
    12·1 answer
  • Medicine On a college campus of 5000 students, the spread of a flu virus through the student body is modeled by
    11·1 answer
  • Solve the proportion<br><br> 36/17=41/x<br> what is x
    15·1 answer
  • Pls answer me this all question correctly pls I beg you pls friends pls pls pls pls pls pls pls pls​
    5·1 answer
  • a man bought a 4 kg apples at the rate of rs 50 per kg he sold 3 kg apples at the rate of rs 65 and 1 kg apples at rs 40 find hi
    14·1 answer
  • Probabilities! Can someone help me? 30 points for the right answer!
    15·2 answers
  • Find the height of the triangle. Round the answer to one decimal place.
    12·1 answer
  • Convert the polar coordinates (3, -5 pi/3). to rectangular coordinates.
    7·1 answer
  • Write -3.65 as a mixed number.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!