All categories

3 years ago

Find the common ratio of the geometric sequence 9, -18, 36, ...

Mathematics

1 answer:

Anna35 [415]3 years ago

6 0

Answer:

-2

Step-by-step explanation:

Each term is being multiplied by -2.

9(-2) → -18

-18(-2) → 36

You might be interested in

The value of a computer which was bought for rs40,000 depreciates at 10%annually what will be the cost of computer after 2 years

aalyn [17]

Answer:

Rs32400

Step-by-step explanation:

By the first year, it will decrease by : 40000 x 10% = 4000
The price will be : 40000 - 4000 = 36000 (Rs)

The next year, it will decrease by : 36000 x 10% = 3600
The price will be : 36000 - 3600 = 32400(Rs)

Hope it helps :)

3 0

2 years ago

Find the modulus of the complex number 6-2i

Papessa [141]

Answer:

The modulus of the complex number 6-2i is:

$|z|\:=2\sqrt{10}$

Step-by-step explanation:

Given the number

$6-2i$

We know that

$z = x + iy$

where x and y are real and $\sqrt{-1}=i$

The modulus or absolute value of z is:

$|z|\:=\sqrt{x^2+y^2}$

Therefore, the modulus of $6-2i$ will be:

$z=6-2i$

$z=6+(-2)i$

$|z|\:=\sqrt{x^2+y^2}$

$|z|\:=\sqrt{6^2+\left(-2\right)^2}$

$=\sqrt{6^2+2^2}$

$=\sqrt{36+4}$

$=\sqrt{40}$

$=\sqrt{2^2}\sqrt{2\cdot \:5}$

$=2\sqrt{2\cdot \:5}$

$=2\sqrt{10}$

Therefore, the modulus of the complex number 6-2i is:

$|z|\:=2\sqrt{10}$

3 0

2 years ago

I need help with this question.

dmitriy555 [2]

Answer: The attachment is blank

Step-by-step explanation: :/

5 0

3 years ago

In the accompanying diagram PA is tangent to circle 0 at A if CN=12 and PB=4 what is the length of PA?

bogdanovich [222]

576972840482626 is the email answer your welcome merry Christmas

4 0

3 years ago

Lisa left the hospital two hours before

Ivan

The speed that lisa drive was a possibility of 65 mph

8 0

3 years ago