# Narancia Ghirga

Popular questions and responses by Narancia Ghirga
1. ## Math

Find the eighth term of the sequence 5, -15, 45, -135 ... I got -10,935

2. ## Math

Convert the rectangular coordinates into polar coordinates (-5,-5sqrt3)

3. ## Math

Write 10+6+2+(-2)+(-6)+(-10)+(-14) in sigma notation.

4. ## Math

Write the following complex number in polar form. Express all angles in degrees rounded to the nearest tenth. Given complex number: 5+6i

5. ## Math

The value of a particular investment follows a pattern of exponential growth. You invested money in a money market account. The value of your investment t years after your initial investment is given by the exponential growth model A=2600e^0.08t . By what

6. ## Math

Which of the following is another representation of the polar coordinate P=3,45° ?

7. ## Math

Write the mathematical expression that describes the arithmetic sequence. Use sigma notation to describe the sum of the first ten terms of the arithmetic sequence 20, 18.5, 17, 15.5, 14, (the difference is from -1.5) Help, please!

8. ## Math

Which of the following is a complex fourth root of -16? I got 2(cos90°+isin90°) Is it okay?

9. ## Math

Write the geometric sequence that has five geometric means between 1and 15,625. I got: 1, 5, 25, 125, 625, 3,125, 15,625, … is it ok?

10. ## Math

Suppose you deposit \$10,000 into a savings account with 3.5% compound interest compounded each month. Find the account balance in 50 years. Round the answer to the nearest thousand dollars. Help

11. ## Math

Find the sum of a geometric series with the following values: a1=3; r=2; n=10 i got; 2,880

12. ## Math

Write the arithmetic sequence that has three arithmetic means between -16 and 16. I got -16, -8, 0, 8, 16 is it okay?

13. ## Math

Find the sum of the first 30 terms of the sequence: -1, 1, -1, 1, -1, … I got -1 is it okay?

1. ## Math

In my exercises, the only answer appears as 61(cos5.2+isin5.2) and sqrt61(cos5.2+isin5.2)

posted on June 13, 2019
2. ## Math

wait how can I write that in a paper?

posted on June 13, 2019
3. ## Math

r=61 and TanØ= 50.2° so it would be like 61(cos5.2+isin5.2)?

posted on June 13, 2019
4. ## Math

I got -3,225 is it okay?

posted on June 12, 2019
5. ## Math

Thanks Reiny, I have problems with maths

posted on June 4, 2019