Dalsy measured the heights of 20 plants The table gives some information about the heights (h in cm) of the plants
Height of plants (D) Frequency
och < 10
1
10 h20
20 < < 30
7
2
30 s < 40
40H50
3
50 <<60
3
By Asing the midpoints of each group work out an estimate
for the mean heard of a plant

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

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step-by-step explanation:

144.50

step-by-step explanation:

21.5 x 13.4=288.10 divide by 2