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3 years ago

(50 POINTS) Write out each sum.

Mathematics

1 answer:

valentina_108 [34]3 years ago

4 0

Step-by-step explanation:

12. n^2+2n

if you insert 1 for k and then work up by inserting 2 for k and adding those together and stoping at n.

13. 8-2(2^n)

if you insert 3 for k and then work up by inserting 4 for k and adding those together and keep on going but stopping at n.

Hope that helps :)

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3 years ago

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Answer:

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3 years ago

A rectangle has an area of 266 square centimeters. If it's length is 19 cm, find its width

Anuta_ua [19.1K]

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3 0

3 years ago

Read 2 more answers

Ray

monitta

We are given that:

m∠AOB = m∠AOC + m∠COB

We are also given that:

m∠AOC = m∠COB + 15

m∠AOB = 155

Therefore:

155 = m∠COB + 15 + m∠COB

2 m∠COB = 140

m∠COB = 70°

and,

m∠AOC = m∠COB + 15 = 85°

Answers:

m∠COB = 70°

m∠AOC = 85°

6 0

3 years ago