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Veseljchak [2.6K]
3 years ago
8

The table shows the dimensions and the numbers of blades of grass on four rectangular pieces of sod. Select and drag the pieces

of sod in order from greatest to least grass density, with greatest at the top and least at the bottom.

Mathematics
2 answers:
sveta [45]3 years ago
4 0

Answer:

i think it is d,a,c,b

Step-by-step explanation:

AfilCa [17]3 years ago
3 0
<h3>Answer: D, C, A, B</h3>

===============================================

Explanation:

  • Rectangle A has area 4*3 = 12 square feet. Divide the number of blades of grass over this area to get a density of 34188/12 = 2849. So the density for rectangle A is 2849 blades per square foot. Put another way, one square foot of rectangle A contains about 2849 blades of grass.
  • Rectangle B has area 5*4 = 20 square feet and density 56340/20 = 2817 blades per square foot.
  • Rectangle C has area 6*3 = 18 square feet and density 52632/18 = 2924 blades per square foot.
  • Rectangle D has area 4*2 = 8 square feet and density 25248/8 = 3156 blades per square foot.

The density order from greatest to least is therefore: D, C, A, B

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Answer:

2x^3+8x^2-3x=0

Step-by-step explanation:

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A statistician chooses 27 randomly selected dates, and when examining the occupancy records of a particular motel for those date
Anni [7]

Answer:

Confidence interval variance [21.297 ; 64.493]

Confidence interval standard deviation;

4.615, 8.031

Step-by-step explanation:

Given :

Variance, s² = 34.34

Standard deviation, s = 5.86

Sample size, n = 27

Degree of freedom, df = 27 - 1 = 26

Using the relation for the confidence interval :

[s²(n - 1) / X²α/2, n-1] ; [s²(n - 1) / X²1-α/2, n-1]

From the chi distribition table :

X²α/2, n-1 = 41.923 ; X²1-α/2, n-1 = 13.844

Hence,

[34.34*26 / 41.923] ; [34.34*26 / 13.844]

[21.297 ; 64.493]

The 95% confidence interval for the population variance is :

21.297 < σ² < 64.493

Standard deviation is the square root of variance, hence,

The 95% confidence interval for the population standard deviation is :

4.615 < σ < 8.031

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Answer:

x = 62.23 ft

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Step-by-step explanation:

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A hexagonal pyramid is cut by a plane as shown in the diagram. What is the shape of the resulting cross section? see diagram
Alenkasestr [34]

From the diagram you can see that plane cuts each lateral face of hexagonal pyramid and do not cut the base. A hexagonal pyramid has six lateral faces. The intersection of each of these lateral faces with given cutting plane is segment. The figure which consists of these segments is hexagon. This hexagon is not the same as base and even is not similar to the base because the cutting plane is not parallel to the base.

Answer: resulting cross section is a hexagon, correct choice is option 4.

9 0
4 years ago
Read 2 more answers
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