3 years ago

Find the sum of 7 E 3i - 15

Mathematics

1 answer:

liberstina [14]3 years ago

5 0

Answer:

-9

Step-by-step explanation:

find the value of i2, which is -9, find the value of i7, which is 6

Then, add them together and multiply by the number of terms in the sequence divided by 2 (6/2=3)

You might be interested in

Solve. Use the strategy "work backward."

cestrela7 [59]

Let that be x

ATQ

$\\ \rm\Rrightarrow 3x-6/5=9$

Arrange accordingly to work backwards(Every thing is reversed)

$\\ \rm\Rrightarrow 9(5)+6/3=x$

$\\ \rm\Rrightarrow 45+6/3=x$

$\\ \rm\Rrightarrow 51/3=x$

$\\ \rm\Rrightarrow x=17$

8 0

2 years ago

The row-echelon form of the augmented matrix of a system of equations is given. Find the solution of the system.

Setler [38]

D) is the answer i already done that question

3 0

3 years ago

Which number is divisible by both 2 and 4? A. 1,022 B. 1,974 C. 2,836 D. 2,918

Kobotan [32]

The correct answer is C. 2,836

when 2836 is divided by 2 it equals 1418. when it is divided by 4 it equals 709. 709 is a whole number, therefore it is correct, and can be divided by both 2 and 4.

3 0

3 years ago

Read 2 more answers

Which is a correct two-column proof? Given: ∠h and ∠c are supplementary. Prove: j || l

pentagon [3]

Answer:

Third option is the correct answer.

Step-by-step explanation:

Third option is the correct answer.

7 0

4 years ago

In a geometric sequence, A1 = 0.3 and r=3.Find A12, to the nearest integer

soldi70 [24.7K]

Step-by-step explanation:

We have,

First terms of geometric sequence, a = 0.3

Common ratio, r = 3

It is required to find the 12th term of a GP. The formula of the nth term is given by :

$T_n=ar^{n-1}$

Here, n =12

So,

$T_{12}=0.3\times 3^{12-1}\\\\T_{12}=0.3\times 3^{11}\\\\T_{12}=53144.1$

$T_{12}=53144$

So, the 12th term of the GP is 53144.

8 0

4 years ago