Do these ratios form a proportion? 10
10. 20 large glasses : 12 small glasses
15 large glasses : 9 small glasses
11. 14 bills : 12 coins
7 bills : 6 coins
12. 9 milligrams : 12 months
13 milligrams : 15 months
13. 2 pințs every 9 weeks
4 pints every 18 weeks

< 6 cm to > 26 cm i believe

step-by-step explanation:

step-by-step explanation:

i hate black

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40

step-by-step explanation:

if you want to solve percent error follow these steps.

1. subtract the accepted value from the experimental value.

2. take the absolute value of step 1.

3. divide that answer by the accepted value.

4. multiply that answer by 100 and add the % symbol to express the answer as a percentage.

if you want to solve percent of change just do this.

1. work out the difference (increase) between the two numbers you are comparing.

2. divide the increase by the original number and multiply the answer by 100. if your answer is a negative number then this is a percentage decrease.

hope this : )