Mathematics, 05.02.2021 02:00 madelyngv97

The twelfth term of a linear sequence is 47 and the sum of the first three terms is
21.
(a) Find the first term and the common
difference.
(b) Find the sum of the first 15 terms of
the sequence.

Answers: 2

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 15:50, tmarie03

Which formula finds the probability that a point on the grid below will be in the blue area? p(blue) = total number of squares number of blue squares number of blue squares p(blue) = total number of squares number of blue squares p(blue) = number of white squares

Answers: 1

continue

Mathematics, 21.06.2019 17:40, challenggirl

Find the volume of the described solid. the solid lies between planes perpendicular to the x-axis at x = 0 and x=7. the cross sectionsperpendicular to the x-axis between these planes are squares whose bases run from the parabolay=-31x to the parabola y = 30/x. a) 441b) 147c) 864d) 882

Answers: 1

continue

Mathematics, 21.06.2019 19:40, friendsalwaysbae

Given the sequence 7, 14, 28, 56, which expression shown would give the tenth term? a. 7^10 b. 7·2^10 c. 7·2^9

Answers: 1

continue

Mathematics, 21.06.2019 21:30, tanabugg

Extra points! find the missing dimension! need asap

Answers: 2

continue

You know the right answer?

The twelfth term of a linear sequence is 47 and the sum of the first three terms is
21.
(...