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
White raven [17]
2 years ago
5

Calculate S30 for the arithmetic sequence defined by {an}={3.1n-2}

Mathematics
1 answer:
timurjin [86]2 years ago
3 0

Answer:

c) 1,381.5.

Step-by-step explanation:

First term = 3.1 *1 - 2 = 1.1

2nd term = 3.1*2 - 2 =  4.2

3rd term = 3.1*3 - 2 = 7.3

so the common difference d = 3.1.

S30  = (30/2) [ 2* 1.1 + (30-1) * 3.1)]

= 1,381.5.

You might be interested in
Help please ASAP!!!!!!
Elodia [21]
The correct answer to your problem is 96
4 0
3 years ago
Batman uses 5 gallons of gas to drive his Batmobile 140
stepan [7]

Answer:

196 miles

Step-by-step explanation:

if he goes 140 miles with 5 gallons, each gallon lets him go 28 miles.

140miles/5gallons=28miles/1gallon

then 7 gallons lets you go 196 miles

brainliest please :)

7 0
3 years ago
Katie draws two chords in a circle in a certain way. She then draws in four segments between adjacent endpoints of the chords to
FromTheMoon [43]
Answer: The answer that is not true is choice D.

If Katie drew those chords and those line segments to form a square, then the diagonals would have to be congruent. The only way to have them would be through the center, therefore they must be diameters.

And if it is a square, then the diagonals are perpendicular bisectors meaning the angles would be right angles not acute or obtuse as in Choice D. <span />
7 0
3 years ago
Calculate the missing angle and give a reason for your answer
Vanyuwa [196]

Step-by-step explanation:

the triangle is an isosceles triangle hence the base angles are equal

sum of angles in a triangle is 180°, therefore, the top angle =180-(62+62)

the top angle =56°

h°= the top angle because alternate angles are equal

hence, h=56°

5 0
2 years ago
Read 2 more answers
Two fractions one positive one negative whose product is 5/8
Ray Of Light [21]

-10/8 and + 15/8. Those should work.

3 0
3 years ago
Other questions:
  • I need help ASAP! Is it A,b,c, or d?
    15·1 answer
  • How do I solve this problem? What do I do next?
    11·2 answers
  • How do I leave this
    15·2 answers
  • What is the sound level for a noise that has an intensity of 9.9 × 10-5 watts/m2?
    9·1 answer
  • Expand, simplify qu. 10 to 18..... :- / Lots of points easy read attachment
    8·1 answer
  • mia's weekly income varies directly with the number lawns she mows. If she earns $143.50 mowing 7 lawns , how much will she earn
    11·2 answers
  • WILL GIVE BRAINLEST IF ANSWER IF CORRECT!! <br>CHARACTERISTICS OF RELATIONS
    14·1 answer
  • Find the unknown angle measure by solving for the given variable.
    11·1 answer
  • The base and height in a figure are always what?
    10·1 answer
  • 2. John and Jen went to the farmers market to buy fruit. John bought 3 boxes of oranges and 9 boxes of cherries for $78. Jen bou
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!