Determining decay rates for styrofoam packaging in landfills. A researcher buried styrofoam cups in the soil for different lengths of time, then dug up the strips and measured the force required to tear them apart. Breaking strength is a good measure and is a good indicator of decay. Lower strength means the styrofoam has decayed more. For one part of the study, the cups were randomly assigned to two groups: 5 of them were buried for 4 weeks and the other 5 were buried for 16 weeks. Hear are the breaking strengths in pounds. At significance level of 0.05 GROUP 1: 75 84 837887 GROUP 2: 8262 74 90 74

47

step-by-step explanation:

x > 1.3

step by step:

8.5−0.9x> 9.8−1.9x

step 1: simplify both sides of the inequality.

−0.9x+8.5> −1.9x+9.8

step 2: add 1.9x to both sides.

−0.9x+8.5+1.9x> −1.9x+9.8+1.9x

1x+8.5> 9.8

step 3: subtract 8.5 from both sides.

1x+8.5−8.5> 9.8−8.5

1x> 1.3

step 4: divide both sides by 1.

1x/1 > 1.3/1

answer:

125 yards

explanation:

75+50=125. that is my answer

$2416.6

step-by-step explanation:

per hour = $ 25

total work time = 35

commission = 15%

total she has to make = $ 4,500

let she sold x dollar products

so her commission will be 15 % of x

now

total = weekly basic pay + commission

4500= (25*35) + 15 % of x

4500=875 + * x

4500-875 =   * x

3625= * x

multiplying wwith 100 on both sides gives

36250 = 15 x

now

x =  

x= $2416.6