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TiliK225 [7]
3 years ago
7

Find the thirteenth term of an arithmetic sequence if the first term is 3 and the common difference is 3

Mathematics
1 answer:
lesya692 [45]3 years ago
8 0

Answer:

39

Step-by-step explanation:

Formula for the nth term (an) = a1 + d(n - 1)  where a1 = the first term and d = common difference.

So here the 13th term = 3 + 3(13 - 1)

= 3 + 3*12

= 39  (answer).

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Name the theorem or postulate that can be used to prove that these triangles are similar
Musya8 [376]

Answer:SAS

Step-by-step explanation:Similar triangles are easy to identify because you can apply three theorems specific to triangles. These three theorems, known as Angle - Angle (AA), Side - Angle - Side (SAS), and Side - Side - Side (SSS), are foolproof methods for determining similarity in triangles.

5 0
3 years ago
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The endpoints of a line segment graphed on a coordinate plane are (8, 5) and (10, 1). What are the coordinates of the midpoint o
soldier1979 [14.2K]

Answer:

(9,3)

Step-by-step explanation:

(8+10)/2. (5+1)/2

18/2. 6/2

9,3

4 0
3 years ago
Please help I'll give a crown if you answer correctly.​
Hoochie [10]

Answer:

2) 1. 73

   2. 107

   3. 73

   4. 107

   5. 73

   6. 107

   7. 73

  8. 107

4) 1. 46  

   2. 134

   3. 46

   4. 134

   5. 46

   6. 134

   7. 46

   8. 134

Step-by-step explanation:

  • Vertical, corresponding, alternate exterior, and alternate interior angles are all congruent (equal).
  • Angles such as same side exterior and same-side interior are supplementary; meaning these angles add up to 180°.
3 0
3 years ago
PLZ HELP BRAIN FAM!!! URGENT!!!
Nikitich [7]
20 + 5 + 500,000,000 = 500,000,025

500,000,025 - 200,000 = 499,800,025

So Johny has 499,800,025

Tommy has 100,005

And Tommy's sister has 100,020
Hope it helps!




3 0
3 years ago
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Roselyn wants to drive her car at a speed of 60 miles per hour for 1.25 hours her car has fuel efficiency of 15 miles per gallon
hjlf
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1.25 hours = 75 miles = 1/4 of 60 is 15 (of the 1.25)
75/15 (miles per gallon)
5 0
3 years ago
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