3 years ago

Two parallel lines are cut by a transversal and form a pair

Mathematics

1 answer:

Novosadov [1.4K]3 years ago

8 0

Answer:

since alternate exterior angles are congruent, you get:

6x + 5 = 7x - 4

subtract 6x from both sides of this equation and add 4 to both sides of this equation to get 5 + 4 = 7x - 6x which results in 9 = x

solve for x to get x = 9 degrees.

Step-by-step explanation:

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3 years ago

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the sum of the first 6 terms of a geometric series is 15624 and the common ratio is 5. what is the first term of the series?

9966 [12]

Answer:

first term a=4

Step-by-step explanation:

Sum of the first 6 terms S6 = 15624

common ratio r= 5

n= 6

first term a=?

Formula: S6= a(r^n-1)/r-1

15624 = a( 5^6-1)/5-1

15624 = a(15625-1)/4

15624= a( 15624)÷4

15624= 15624a÷4

Cross multiply

15624×4 = 15624a

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divide both sides by 15624

62496÷15624 = 15624a÷15624

4 = a

a= 4

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Answer:

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Step-by-step explanation:

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