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
pogonyaev
3 years ago
11

the first term in an arithmetic series is 9, while the last term in the series is -191. if there are 25 terms in the series, wha

t is its sum?
Mathematics
1 answer:
yaroslaw [1]3 years ago
4 0
191+9 = 200
200/25 = 4
since you are decreasing, the number is negative,
thus the answer is -4
You might be interested in
Mike thought of a number. He added to it to two other numbers. One of these numbers was 12 less than his number, the other was 1
Inessa [10]

Answer:

number 1  + number 2 + number 3 = 15

Number 1 = x + 12

Number 2 = x - 12

Number 3 = x

(x + 12) + (x - 12) + x = 15

x + 12 + x - 12 + x = 15

x + x + x +12 -12 = 15

3x = 15

x = 15/3 = 5

Check:

Number 1 = 17

Number 2 = 5 -12 = -7

Number = 5

number 1  + number 2 + number 3 = 15

17 + (-7) + 5 = 15

10 + 5 = 15

15 = 15

Answer is 5

Step-by-step explanation:

5 0
3 years ago
Can you find the midpoint of AB​
Masteriza [31]
Use the distance formula for the 2 points and then halve the answer
7 0
2 years ago
Read 2 more answers
The function C(x)=−20x+1681 represents the cost to produce x items. What is the least number of items that can be produced so th
Reptile [31]

Answer:

<em>The least number of items to produce is 41</em>

Step-by-step explanation:

<u>Average Cost</u>

Given C(x) as the cost function to produce x items. The average cost is:

\displaystyle \bar C(X)=\frac{C(x)}{x}

The cost function is:

C(x) = -20x+1681

And the average cost function is:

\displaystyle \bar C(X)=\frac{-20x+1681}{x}

We are required to find the least number of items that can be produced so the average cost is less or equal to $21.

We set the inequality:

\displaystyle \frac{-20x+1681}{x}\le 21

Multiplying by x:

-20x+1681 \le 21x

Note we multiplied by x and did not flip the inequality sign because its value cannot be negative.

Adding 20x:

1681 \le 21x+20x

1681 \le 41x

Swapping sides and changing the sign:

41x \ge 1681

Dividing by 41:

x\ge 41

The least number of items to produce is 41

8 0
2 years ago
8% of what number is 2 :)
Alisiya [41]
8% of what number is 2 - 268832
8 0
2 years ago
Read 2 more answers
Please help 10 points 1 question
gregori [183]

Answer:

ty for point have a nice day po

4 0
2 years ago
Other questions:
  • Drake wants to save $750 so that he can take a class on computer analysis for cars. The class is being held on various dates ove
    5·2 answers
  • Please help, if you can, thanks :)<br>number 15
    11·2 answers
  • Edgar Anderson earns $300 per week plus 15% commission on all sales over 1,000. if Mr. Anderson's sales for one week are 2,500 w
    15·1 answer
  • in a sixth grade music Class ,1/5 of the class wants to play the drums .which decimal is equivalent to 1/5
    12·2 answers
  • write sixty-nine million fifty-eight thousand, two hundred nineteen and three hundredths in standard form show your work will ma
    12·1 answer
  • In the game of​ roulette, a player can place a ​$5 bet on the number 11 and have a startfraction 1 over 38 endfraction probabili
    10·1 answer
  • Please help !!!! UrGent !!!!
    5·1 answer
  • For the equation 2x + 3 = 4x – 3:<br> a. How many solutions does it have?<br> b. How do you know?
    12·2 answers
  • There are 14 boys and 13 girls in a class. Write the ratio of boys<br> to girls.
    12·2 answers
  • Which phrase represents the algebraic expression for r + 12?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!