The first term of a geometric sequence is –2 and the common ratio is -1/4. What are the next three terms of the sequence?

1 answer:

3 0

I agree with the answer being B because since it's a common ratio you could just multiply -1/4 with -2 and keep doing that with each new term

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The difference between two numbers is 9 and the product of the numbers is 162. Find the two numbers

fiasKO [112]

Let the no be X and Y

acc to ques....

x-y=9 .........1

xy=162 ..........2

substituting value from 1 in 2 we get;

x=9+y

[9+y][y] = 162

y^2+9y = 162

y^2 + 9y - 162=0

y^2 + 18y - 9y - 162=0

y[y+18] + 9[y+18]=0

[y+9][y+18}

y= -9.................................3

y= -18......................................4

case 1 :

y= -9

x = 9-9=0

case 2:

y= -18

x= 9-18 = -9

7 0

3 years ago

The ratio of students packing lunch to those buying lunch is 2 : 9. The number of students buying lunch is how many times the nu

DedPeter [7]

Answer:

4.5 times

Step-by-step explanation:

Packing to Buying is 2:9

Therefore, Buying to Packing will be 9:2.

9/2 = 4.5

4 0

2 years ago