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
Scorpion4ik [409]
1 year ago
13

An arithmetic sequence has t1 = 6 and common difference 2 find t12 and s12​

Mathematics
1 answer:
Sergeeva-Olga [200]1 year ago
4 0

Answer:

See below ~

Step-by-step explanation:

Finding t₁₂ :

⇒ t₁₂ = t₁ + 11d

⇒ t₁₂ = 6 + 11(2)

⇒ t₁₂ = 6 + 22

⇒ t₁₂ = 28

=============================================================

Finding S₁₂ :

⇒ S₁₂ = 12/2 × 2t₁ + (12 - 1)d

⇒ S₁₂ = 6 × 2(6) + 11(2)

⇒ S₁₂ = 6 × 12 + 22

⇒ S₁₂ = 6 × 34

⇒ S₁₂ = 204

You might be interested in
A rope is 66 feet long. It is cut into two pieces such that one piece is half the length of the other. What is the length of the
dedylja [7]
So if one bit of the length, is half the size of the other bit then we can make the following equation, for x being the length of rope:

x + 2x = 66
3x = 66
x = 22

That is the length, of the smaller one (half the big one), so 2x = 44. Hence d) is your answer.

Hope I helped!
7 0
3 years ago
Read 2 more answers
How do you use equivalent rates in the real world?
kotykmax [81]
Cross multiplication
or multiplying by a number which goes in both rates
7 0
3 years ago
Find the height of a square pyramid that has a volume of 75 cubic feet and a base length of 5 feet.
Rudiy27

Answer:

9 ft

Step-by-step explanation:

Let's begin with the formula for the volume of a square pyramid.  If s is the base length, then the area of the base is s^2.  The volume of the pyramid is then V = (1/3)(base area)(height).  We know the volume and the base length (s), and want to find the height.  Solving V = (1/3)(base area)(height)

for height, we get:

3V = (base area)(height), or

    3V

---------------- = height

base area

Substituting 75 ft^3 for V and (5 ft)^2 for base area, we get:

               3(75 ft^3)              9 ft

height = ------------------ = ----------------- = 9 ft

                 25 ft^2                   1

3 0
3 years ago
Mario collected data about some of the players on a women’s basketball team. The data is shown in the form of table, mapping, an
Mumz [18]

Answer:

1. No, because each x value can only have one y value (one-to-one relationship).

2. No, because each x value can only have one y value (one-to-one relationship).

3. Yes, because one member of the domain is assigned to one member of the range.

Step-by-step explanation:

4 0
2 years ago
Find the area of a circle whose circumference is 24 pi.
lozanna [386]

Answer:

452.39 sq.unit is the area of that circle.

6 0
3 years ago
Other questions:
  • A group of friends on a camping trip has 3 2/5 pound of Trail Mix they divided up evenly among themselves each person gets 1/5 l
    12·1 answer
  • -3^(-x)-6=-3^x+10<br><br>Solve the equation below for x by graphing plz
    6·2 answers
  • The local store where Tim shops charges a 7% sales tax for clothing. Complete the table by figuring the cost of the jeans after
    5·1 answer
  • The radius of a circular track is 0.2 miles ellie ran around the track 3 times how many kilometers round to the nearest whole mi
    10·1 answer
  • Two airplanes leave an airport at the same time, flying in the same direction. One plane is flying at twice the speed of the oth
    10·1 answer
  • HELP ASAP!!
    9·1 answer
  • A triangle has sides 12cm, 9cm and 15cm. Is the triangle right-angled? Justify your answer
    10·1 answer
  • A girl 5 ft tall is walking away from a lamp post that is 12 ft high. If the girl is walking at a speed 7ft/s, how fast is the t
    7·1 answer
  • 3x-4y+11 for x-2 and y-1
    7·1 answer
  • Help me one this one​
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!