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
kvasek [131]
3 years ago
5

For a sequence an=3/n(n+1) what is the value of a 10

Mathematics
2 answers:
jenyasd209 [6]3 years ago
6 0

For this case we have the following sequence:

a_ {n} = \frac {3} {n (n + 1)}

We must find the value ofa_ {10}, then, substituting n = 10 in the formula we have:

a_ {10} = \frac {3} {10 (10 + 1)}\\a_ {10} = \frac {3} {10 * 11}\\a_ {10} = \frac {3} {110}

ANswer:

a_ {10} = \frac {3} {110}

FrozenT [24]3 years ago
3 0

Answer:

\large\boxed{a_{10}=\dfrac{3}{110}}

Step-by-step explanation:

Put <em>n = 10</em> to the equation a_n=\dfrac{3}{n(n+1)}

a_{10}=\dfrac{3}{10(10+1)}=\dfrac{3}{10(11)}=\dfrac{3}{110}

You might be interested in
Anybody have an answer?
OleMash [197]
I think the answer is 18
5 0
3 years ago
The sum of five times a number and -6 is -2
koban [17]
So,

"The sum of five times a number and -6"
5n + -6 or 5n - 6

"is -2"
= -2

5n - 6 = -2

Add 6 to both sides.
5n = 4

Divide both sides by 5.
n =  \frac{4}{5} \ or\ 0.8\ or\ 80\ percent
7 0
3 years ago
Please explain and tell me how to do it please
dsp73

The answer is b) y = 3x + 3.

To find this, we first need to find the slope. The slope formula is listed below.

m = (y2 - y1)/(x2 - x1)

In this equation, m is the slope, and (x1, y1) is the first point, where (x2, y2) is the second point. We'll use (2, 9) and (3, 12) for the points.

m = (y2 - y1)/(x2 - x1)

m = (12 - 9)/(3 - 2)

m = 3/1

m = 3

Now that we have the slope at 3. we can use slope intercept form and one point to solve for the y-intercept. We'll use (2, 9) as the point.

y = mx + b

9 = 3(2) + b

9 = 6 + b

3 = b

When we use the slope and intercept together to get the equation. y = 3x + 3

8 0
3 years ago
A 10-ft vertical post casts a 14-inch shadow at the same time a nearby cell phone tower cast a 119-ft shadow. How tall is the ce
Yakvenalex [24]

Answer:

The cellphone towers height is 1020 ft.

Step-by-step explanation:

This question is solved using proportions, by a rule of three.

A 10-ft post casts a 14-inch shadow.

Each feet has 12 inches, which means that a post with 10 feet will cast a 14/12 = 1.167 ft shadow. How tall is the cell-phone tower with a 119-feet shadow?

10 feet post - 1.167 ft shadow

x feet tower - 119 feet shadow

Applying cross multiplication:

1.167x = 10*119

x = \frac{1190}{1.167}

x = 1020

The cellphone towers height is 1020 ft.

8 0
3 years ago
I need help with this question, please help me for 10 points?
IgorC [24]

Answer:

c

Step-by-step explanation:

your right

6 0
3 years ago
Other questions:
  • if the unit selling price is2.50 and the unit cost 1.00 wjat action is needed maintain gross margin percentage when unit cost in
    14·1 answer
  • 8x9-2-3 = 32<br> Where do the parentheses go
    14·2 answers
  • Gwen borrowed $20 from her mother to buy a scarf. Then, she went to her favorite department store and charged a pair of boots fo
    6·1 answer
  • A point (-7, -6) is rotated counterclockwise about the origin to map onto (-6, 7). The
    8·1 answer
  • What's bigger 6 2/3 or 6 12/15
    15·2 answers
  • A delivery truck driver charges a fixed base price of $6 for 2 miles. After 2 miles, he charges an additional $2 for every mile.
    15·2 answers
  • Given: △ABC, BC&gt;AC, D∈ AC , CD=CB Prove: m∠ABD is acute
    8·1 answer
  • Mark made 7 withdrawals of $75 each from her bank account. What was the overall change in her account?
    12·1 answer
  • a gas tank which can hold a total of 41 liters contains only 5 liters of gas when the driver stops to refuel. If it takes 3 minu
    9·1 answer
  • On Monday Jimmy went to see a movie that was 112 minutes long is the first 12 minutes of the movie on Tuesday Jimmy went to see
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!