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Lubov Fominskaja [6]
3 years ago
5

Find k if 3k, k-2, and k + 7 are consecutive terms of an arithmetic sequence.

Mathematics
1 answer:
ahrayia [7]3 years ago
6 0
This is 1:25 (C)

Explanation:

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The questions are in the pictures:)
JulsSmile [24]

Answer:

4.75 to 7.5

Step-by-step explanation:

just look at it or use a pencil to draw lines to proportion

7 0
3 years ago
Will mark first answer brainliest
babymother [125]

Answer:

Step-by-step explanation:

B. -3

Hope that helps!

8 0
3 years ago
Read 2 more answers
What is the measure of arc BC?<br> 130<br> 65<br> 32.5<br> 180
ale4655 [162]

Answer:

The measure of arc BC is 130° ⇒ 1st answer

Step-by-step explanation:

In a circle:

  • The measure of an arc is equal to the measure of the central angle subtended by it
  • The measure of an arc is equal to double the measure of the inscribed angle subtended by it
  • Central angles subtended by the same arc are equal in measures
  • Inscribed angles subtended by the same arc are equal in measures
  • The measure of central angle is double the measure of the inscribed angle which subtended by its arc

∵ Angle BDC is an inscribed angle

∵ It is subtended by the arc BC

- By using the 2nd fact above

∴ The measure of arc BC = 2 × the measure of ∠BDC

∵ The measure of angle BDC is 65 degree

∴ The measure of arc BC = 2 × 65°

∴ The measure of arc BC = 130°

The measure of arc BC is 130°

7 0
4 years ago
An auditorium has 50 rows of seats. The first row has 20 seats, the second row has 21 seats, the third row has 22 seats, and so
Vikentia [17]

Answer:

1050

Step-by-step explanation:

I'm pretty positive it would be 1050 by multiplying 50 and 20 and adding 50

4 0
3 years ago
Leo bought a used car for x dollars. one year later the value of the car was 0.88x. which expression is another way to describe
Bess [88]
Well, the car depreciated in value by 12%, so you could say
x-12%, or just
x-0.12.
8 0
3 years ago
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