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
Katyanochek1 [597]
4 years ago
15

I need help with finding the value of n?​

Mathematics
1 answer:
Mars2501 [29]4 years ago
5 0

Answer:

14

Step-by-step explanation:

2k - 1 is linear, so this is an arithmetic series.  The sum of an arithmetic series is:

S = (n/2) (a₁ + an)

Here:

S = 196

a₁ = 2(1) - 1 = 1

an = 2n - 1

Solving:

196 = (n/2) (1 + 2n - 1)

196 = (n/2) (2n)

196 = n²

n = 14

You might be interested in
Given the figure below, find EF if CA = (6n) and EF = (n + 8)
GalinKa [24]

Answer:

EF = 12

Step-by-step explanation:

Given

CA =6n

EF= n + 8

Required

Find CN

From the attachment:

EF = CD\ and\ CD = DA

Where

CA = CD + DA

This means that:

CA = CD + CD

CA = 2CD

or

CA = 2*EF

This gives:

6n = 2*(n+8)

Open bracket

6n = 2n+16

Collect anf simplify like terms

4n = 16

n= 4

So:

EF= n + 8

EF = 4 + 8

EF = 12

8 0
3 years ago
Find the height of a prism whose volume is 108 cm3<br> and the area of the base is 15 cm2.
cluponka [151]

Answer:17

Step-by-step Experlation: The volume is 108 cm. 3,2,15.a square prism with a base edge of 9.5 inches and a height of 17 ... amount for a landowner

7 0
3 years ago
1. Triangle ABC is congruent to triangle EDF. So, Kiran knows that there is a sequence of rigid motions that takes ABC to EDF.
Vikki [24]
I recommend Going on quizlet is has all the answers!
3 0
3 years ago
Read 2 more answers
Help please and how to did it cuz I’m confused
Brrunno [24]

Answer:

-125

Step-by-step explanation:

Step 1: Find g(-1)

g(x) = -5x²

g(-1) = -5(-1)²

g(-1) = -5(1)

g(-1) = -5

Step 2: Find g(-5)

g(-5) = -5(-5)²

g(-5) = -5(25)

g(-5) = -125

6 0
3 years ago
How do I solve this?
Black_prince [1.1K]
To solve, you start with distributive property and multiply 7 by n and 3 for
7n-21<-63 the you get the 7n alone by adding 21 to -63 and the 21 for 7n<-42. now you divide 7 by itself and 42 for n<-6
7 0
3 years ago
Read 2 more answers
Other questions:
  • Which coupon should Vivian use to save the most money on a crystal sculpture originally priced at $281.90 20% off or 50.00$
    14·1 answer
  • What is -42-72 plz tell me
    9·2 answers
  • Trigonometry<br> Trigonometric Functions <br> Given: Cos θ = (3/5), Find: Csc θ
    11·1 answer
  • dominic bought a new alram clock that was on sale for 18,75 if this price represents a 30% discount from the original price what
    10·1 answer
  • Write an equation of the line that passes through a pair of points: (-3,1), (-2,-5)
    7·1 answer
  • Wilma is twice as old as Jamal, and Jamal is 3 years older than Tim. The sum of all their ages is 17.
    15·1 answer
  • Whats 9 + 10 = ??<br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br> If ykyk :P
    6·2 answers
  • Suppose the line of best fit between the # of dens (x) and the # of foxes (y) is y=7.2x+1.9 If I had 8 dens how many foxes shoul
    8·1 answer
  • Solve the compound inequality.<br> 3x + 1 &lt;4 or 9x &gt; 31
    15·1 answer
  • at $2\!:\!48$ what is the degree measure of the smaller angle formed by the hour and minute hands of a $12$-hour clock?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!