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enyata [817]
2 years ago
8

Carter needs to remove sod in his yard to build three flower beds. One bed will be a rectangle which measures 2.5 m by 6 m. Anot

her bed will be a semicircle which has a diameter of 6 m. The other bed will be a quarter circle with a radius of 4 m.
Mathematics
1 answer:
Kryger [21]2 years ago
5 0

Answer:

Area = 41.714m^2

Step-by-step explanation:

Given

Rectangle:

Length = 2.5m

Width = 6m

Semicircle

Diameter = 6m

Quarter circle

Radius = 4m

Required

The square meters of sod will Carter remove [Missing information]

To do this, we simply calculate the area of each flower beds.

For the rectangle:

A_1= Length * Width

A_1= 2.5m * 6m

A_1= 15m^2

For the semicircle

A_2 = \frac{1}{2}\pi r^2

Where

r=\frac{6}{2} = 3

So:

A_2 = \frac{1}{2} *\frac{22}{7} * 3^2

A_2 = \frac{1}{2} *\frac{22}{7} * 9

A_2 = \frac{1*22*9}{2*7}

A_2 = \frac{198}{14}

A_2 = 14.143

For the quarter circle

A_3 = \frac{1}{4}\pi r^2

A_3 = \frac{1}{4} * \frac{22}{7} * 4^2

A_3 = \frac{22}{7} * 4

A_3 = \frac{88}{7}

A_3 = 12.571

Total area is:

Area = A_1 + A_2 + A_3

Area = 15 + 14.143 + 12.571

Area = 41.714m^2

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2 years ago
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Answer:

88.88% probability that it endures for less than a year and a half

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this question, we have that:

\mu = 66, \sigma = 10

The next career begins on Monday; what is the likelihood that it endures for less than a year and a half?

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So this probability is the pvalue of Z when X = 78.21.

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6 0
3 years ago
The ages of Anjali and Aditya are in the ratio 3: 4.Eight years later sum
Maksim231197 [3]

Answer:

12 years and 16 years

Step-by-step explanation:

their ages are in the ratio 3 : 4

let Anjali = 3x and Aditya = 4x ← present ages

In 8 years then

Anjali = 3x + 8 and Aditya = 4x + 8, hence

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7x + 16 = 44 ( subtract 16 from both sides )

7x = 28 ( divide both sides by 7 )

x = 4

Anjali is 3x = 3 × 4 = 12 years old and Aditya = 4x = 4 × 4 = 16 years old



8 0
2 years ago
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