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
Alona [7]
3 years ago
10

Which expression defines the given series for seven terms -13+(-16)+(-19)+...

Mathematics
1 answer:
ANTONII [103]3 years ago
8 0
For summing the terms of an arithmetic series use this
\frac{( 2a_{1} +(n-1)d)n}{2}
a1 is the first term and d is the difference between second and first term
You might be interested in
The sound intensity of rustling leaves is 100 times the reference intensity. Use your graph to determine the sound intensity of
wariber [46]

The sound intensity of rustling leaves,  y = 20 decibels

<u>Step-by-step explanation:</u>

y = 10logx

The sound intensity of rustling leaves is 100 times the reference intensity.

x = ratio of intensity of sound to reference to intensity

x = 100:1 or x = 100

y = 10 log(100) = 10 * 2 = 20 decibels

y = 20 decibels

4 0
3 years ago
Read 2 more answers
The sales tax on a surfboard is 12$ .what is the percent of sales tax
sashaice [31]
It will be 12% because if you have 0.12 and you move the decimal 2 spots it will give you 12% try it when you have to turn a decimal into a percent.
8 0
3 years ago
Understanding Square and Cube Roots - Item 31415
hichkok12 [17]
<h2>Answer:</h2><h2>First: 3</h2><h2>Second: 25</h2><h2>Third: 81</h2><h2 /><h2>Hope this helps!! <3 :)</h2>

8 0
3 years ago
Help me to find the missing lenth
algol [13]

The answer is 25

We can see the triangle is not to scale, and that the triangle on the right has measurements that equal 5 times as much as the one on the left.

So we do 5x5 to find the missing length and that is 25.

8 0
3 years ago
PLZ HELP FAST FIRST PERSON TO ANSWER OR WHOEVER GETS RIGHT GETS BRAINLYEST
Damm [24]
T + S + R = 180

R = 180 - (T + S)

T + S = 68 + 76  = 144

So R = 180 - 144  = 36

<R = 36
3 0
3 years ago
Read 2 more answers
Other questions:
  • Marion is making trail mix for a group camping trip. She buys 3 pounds of granola for $3 per pound, and 0.75 pounds of raisins f
    9·2 answers
  • An inch is equal to about 2.54 centimeters. Write an expression which estimates the number of centimeters in x inches. Then esti
    12·2 answers
  • A club surveyed its members to decide on food for an event. Out of 125 members surveyed, 89 preferred pizza, 23 of those preferr
    8·1 answer
  • What is the area of this triangle?
    6·2 answers
  • 3(12-3x)=27 solve the equation
    5·2 answers
  • Help!<br> Choose the correct number line that represents the following inequality...<br><br> x&gt;5
    12·1 answer
  • Figure B is a scale image of Figure A, as shown. What is the scale factor applied to
    6·1 answer
  • In a map scale of 2.5 cm : 400 m, the distance between the supermarket and the gas station is 5.5 cm. Work out the real distance
    9·1 answer
  • If it takes Tom 2 minutes 20 to
    11·1 answer
  • How
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!