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3 years ago

7

farmer johnson is planting a garden in the park. he has a square garden bed that is 21 feet long. He divides the bed into square

s for vegetables. The squares are 3 by 3 feet long.How many different vegetable squares could he have?

1 answer:

Orlov [11]3 years ago

6 0

Answer:

3

Step-by-step explanation:

3x3=9

21/9= 3

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Your monthly bill went frm 57.98 to 62.49 whats the percent change

nekit [7.7K]

D is your answer for your question

6 0

3 years ago

In a circle, area and circumference can be found using the formulas A=(pi)r^2 and C=2(pi)r, respectively, Write a formula for A

AURORKA [14]

Answer:

$A = \dfrac{C^2}{4\pi}$

Step-by-step explanation:

Given that

Area of a circle $A=\pi r^2$

Circumference of the circle $C = 2 \pi r$

Let us re-write the equation of area of circle:

$A=\pi r^2$

$A = \pi \times r \times r$

Multiplying and dividing with 2:

$A = \dfrac{2\pi r}{2} \times r\\\text{Putting }2\pi r = C:\\\Rightarrow A = \dfrac{C}{2} \times r\\\text{Multiplying and dividing by } 2\pi:\\\Rightarrow A = \dfrac{C}{2} \times \dfrac{2\pi r}{2\pi}\\\text{Putting }2\pi r = C:\\\Rightarrow A = \dfrac{C \times C}{4 \pi}\\\Rightarrow A = \dfrac{C^2}{4 \pi}$

Hence, <em>A</em> in terms of <em>C</em> can be represented as:

$A = \dfrac{C^2}{4\pi}$

4 0

4 years ago

A class has 21 girls and 12 boys. what is the probability that a boy's name is drawn at random

belka [17]

There are a total of 33 students in the class (21+12=33). There are 12 boys in the class so the chance of drawing a boys name would be 12/33 which reduces to 4/11. This means you will draw a boys name 4 times for every 11 draws. To find the percent probability, just divide...

4/11 =.3636

multiply by 100 to convert to a percentage ( move decimal to the right 2 places).

.3636 = 36.36%

There is a 36.36% chance that a boys name is drawn.

3 0

3 years ago

A soft drink machine outputs a mean of 2323 ounces per cup. The machine's output is normally distributed with a standard deviati

viktelen [127]

Answer:

Area under the normal curve: 0.6915.

69.15% probability of putting less than 24 ounces in a cup.

Step-by-step explanation:

Problems of normally distributed samples are 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 problem, we have that:

$\mu = 23, \sigma = 2$

You have been asked to calculate the probability of putting less than 24 ounces in a cup.

pvalue of Z when X = 24. So

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

$Z = \frac{24 - 23}{2}$

$Z = 0.5$

$Z = 0.5$ has a pvalue of 0.6915

Area under the normal curve: 0.6915.

69.15% probability of putting less than 24 ounces in a cup.

5 0

3 years ago

Solve for x. 2/5x=6/5 <br><br><br> A. 12/25 <br><br> B. 12/5<br><br> C. 3<br><br> D. 6

arsen [322]

Answer:

C. 3

Step-by-step explanation:

2/5 x = 6/5

Multiply each side by 5/2 to isolate x

5/2 * 2/5 x = 6/5 * 5/2

x = 6/2

x=3

5 0

3 years ago