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Flauer [41]
2 years ago
8

Emily wants to plant flowers in an area with angular but that is 1 foot by 4.5 ft. the flowers she wants to plant need to be spa

ced at least 8 inches apart. how many plants should she buy for the garden?​
Mathematics
1 answer:
lukranit [14]2 years ago
7 0

Using the perimeter of the rectangle, it is found that she should buy at most 16 plants.

---------------------------

The perimeter of a rectangle of length l and width w is given by:

P = 2(l + w)

In this question, the perimeter is of 1 ft by 4.5, thus, l = 1, w = 4.5, and the perimeter is:

P = 2(1 + 4.5) = 2(5.5) = 11

  • Perimeter of 11 ft.
  • The plants will be at least 8 inches = 2/3 feet apart along the perimeter, thus:

1 plant - 2/3 ft

x plants - 11 ft

Applying cross multiplication:

\frac{2x}{3} = 11

2x = 33

x = \frac{33}{2}

x = 16.5

At least 8 inches apart(can be more), thus she should buy at most 16 plants.

A similar problem is given at brainly.com/question/10489198

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A recent study focused on the number of times men and women send a Twitter message in a day. The information is summarized below
jok3333 [9.3K]

Answer:

The value of the test statistic = 2.58

Test statistic Z = - 4.805

|Z| = 4.805 > 2.58

Null hypothesis is rejected The value of the test statistic = 2.58

There is  significant difference between in the mean number of times men and women send a Twitter message in a day

Step-by-step explanation:

Step(i):-

Sample size of men  n₁ = 25

mean of the first sample x₁⁻ = 20

Standard deviation of the first sample σ₁ = 5

Sample size of women n₂ = 30

mean of the second sample x₂⁻ = 30

Standard deviation of the first sample σ₂ = 10

Level of significance ∝= 0.01

<u>Step(ii)</u>:-

Null Hypothesis : H₀: There is no significant difference between in the mean number of times men and women send a Twitter message in a day

Alternative Hypothesis :H₁:There is  significant difference between in the mean number of times men and women send a Twitter message in a day

Test statistic

Z = \frac{x^{-} _{1} - x^{-} _{2} }{\sqrt{\frac{S.D_{1} ^{2} }{n_{1} }+\frac{ S.D_{2} ^{2}}{n_{2} }  } }

Z = \frac{20 - 30 }{\sqrt{\frac{(5)^{2}  }{25 }+\frac{ (10)^{2}  }{ 30}  } }

Z =  \frac{-10}{2.081} = - 4.805

The value of the test statistic = 2.58 C

|Z| = 4.805 > 2.58

Null hypothesis is rejected The value of the test statistic = 2.58

<u>Conclusion:</u>-

There is  significant difference between in the mean number of times men and women send a Twitter message in a day

7 0
3 years ago
Can someone work out this problem for me because I do not get it and it is due tomorrow for homework? 83.971 + 10.9 PLSS HELPPPP
IrinaK [193]
If you are just adding those two decimals together, the answer would be 100.871.

83.971
+ 10.900 (make believe there are two zeros)
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100.871
8 0
3 years ago
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xz_007 [3.2K]

Answer:

1E18 OR 10^18

Step-by-step explanation:

The formula is multiply the length by 1e+18

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Answer:

Assuming that all three sides are 9 inches then the answer should 729.

Step-by-step explanation:

Just multiply 9*9*9. The formula to get volume is (length)*(width)*(height).

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Answer:

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