Acup contains green and red marbles. if there are 18 marbles in the cup, which of the following could not be the ratio of green to red marbles? 2: 3 1: 2 1: 1 1: 5 1: 8

Marbles can not be in the ratio of 2:3.

Step-by-step explanation:

In this question total number of marbles are = 18

Ratio of green: Red marbles are 2:3 1:2 1:1 1:5 1:8

1). First we take the ratio of 2:3

Then number of green marbles = 18×(2/5) = 36/5

and number of red marbles = 18×(3/5) = 54/5

Which is not possible because number of marbles can not be in fraction.

2). In ratio of 1:2

Number of green marbles = 18×(1/3) = 6

Number of red marbles = 18×(2/3) = 12

3). In the ratio of 1:1

Red and green are equal = 9 marbles each

4). In the ration of 1:5

Green marbles = 18×(1/6) =3

Red Marbles = 18×(5/6) = 15

5). In the ration of 1:8

Green marbles = 18×(1/9) = 2

Red marbles = 18×(8/9) = 16

false

step-by-step explanation:

4y - 6 + 4y^2 - 9

before simplifying this contains 4 terms

after simplifying

4y -15 + 4y^2

it contains 3 terms

d. millimeters per hour.

step-by-step explanation:

we are given that,

carlo used a rain gauge to measure the amount of water his lawn is receiving from the sprinklers.

since, according to the options, we see that,

water cannot be measured by 'miles per hour', 'meters per second' and 'grams per seconds'.

we get that, the water can be measured by 'millimeters per hour'.

hence, the appropriate rate for describing the amount of water is 'millimeters per hour'.