All categories

3 years ago

Determine the 4th term in the geometric sequence whose first term is -2 and whose common ratio is -5

1 answer:

4 0

Again, any geometric sequence can be expressed as:

a(n)=ar^(n-1), a=initial term, r=common ratio, n=term number

We are told that a=-2 and r=-5 so:

a(4)=-2(-5)^(4-1)

a(4)=-2(-5)^3

a(4)=250

You might be interested in

Working alone, Ryan can dig a 10 ft by 10 ft hole in 5 hours Castel can dig the same hole in 6 hours how long would it take them

Fed [463]

Answer:

The time taken by both boys to complete work = 2.73 hours

Step-by-step explanation:

Time taken by rayan to dig hole $T_{1}$ = 5 hours

Time taken by castel to dig hole $T_{2}$ = 6 hours

Now the time taken by both persons working together

$T = \frac{T_{1} T_{2} }{T_{1} + T_{2}}$

Put all the values in above formula we get

$T = \frac{ 30 }{6 + 5}$

$T = \frac{30}{11}$

T = 2.73 hours

Therefore the time taken by both boys to complete work = 2.73 hours

6 0

3 years ago

The length of a rectangle is 6 feet and the width is 3 feet. Find the perimeter I

Anarel [89]

So for the perimeter, there will be 2 of each side. 3(2)+6(2)= 18.
The perimeter is 18 feet.

4 0

3 years ago

40% of what number is 24

liq [111]

40% of what number is 24

24 : 40 * 100 =

60 is your answer

3 0

3 years ago

Please show me how to start this question but don't give me the answer

Natalija [7]

To make the input-output table, we need to plug in the given vaues of x's in the equation to get their corresponding values of y.

Let's plug in x = -2 in y = 6x +5. So,

y = 6( -2) + 5 = -12 + 5 = -7

Similarly for x = 0, y= 6(0) + 5 = 5

For x = 1, y = 6(1) + 5 = 6 + 5 = 11

For x = 4, y = 6(4) + 5 = 24 + 5 = 29

For x= 5, y = 6(5) + 5 = 30 + 5 = 35.

I am attaching the input -output table from the above result.

Hope this helps you!

4 0

3 years ago

every three days Seth goes to the grocery store every brain goes to the store every 5 days what day will they both go

Rom4ik [11]

If seth goes every three days and Brian im assuming is the name.Goes every five days then they will both go on day 15

6 0

3 years ago

Read 2 more answers