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Leno4ka [110]
3 years ago
5

A rectangular rug is 4 feet by 9 feet. What is the side length of a square with the same area.

Mathematics
2 answers:
m_a_m_a [10]3 years ago
8 0

idk

Step-by-step explanation:

bearhunter [10]3 years ago
7 0
Finding area of any rectangular object is length × width. So, 4 × 9 = 36 is the area of the rectangular rug.

The area of a square is one side of the square times itself. So, side × side = area of square. Let's call the sides s. I'm going to substitute the formula for area of a square with s.

s × s = area of a square.
We know that the area of the rectangle is the same as the area of the square. So, s × s = 36.

When you have the same side multiplied by itself, that's equivalent to that side to the second power. So, s × s = s^2 = 36. To get one side, we must take the square root of both sides: sqrt (s^2) = sqrt (36).

s = 6. One side of the square has a length of 6 feet. Good luck!
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Find the exact value of T Image below
Elanso [62]

Answer:

a) 1/800 or 0.00125

b) i) 0.0013

ii) 0.001

c) 60%

Step-by-step explanation:

T = [tan(2×30)+1][2cos(30)-1] ÷ (y²-x²)

T = (tan60 + 1)(2cos30 - 1) ÷ (41² - 9²)

T = (sqrt(3) + 1)(sqrt(3) - 1) ÷ 1600

T = (3-1)/1600

T = 2/1600

T = 1/800

T = 0.00125

Error: 0.002 - 0.00125

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%error

0.00075/0.00125 × 100

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4 0
3 years ago
Luke was given a gift card for a coffee shop. Each morning, Luke uses the card to buy one cup of coffee. The original amount of
GaryK [48]

Answer:

A= −3x+30

A=30 when x=0  which is the y−intercept.

(0,30) is a point on the graph

A=12 when x=6.

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3 0
3 years ago
Random samples of size 81 are taken from an infinite population whose mean and standard deviation are 200 and 18, respectively.
TiliK225 [7]

Answer:

d. 200 and 2

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

In this problem, we have that:

Mean = 200

Standard deviation = 18

Sample size: 81

Standard error: s = \frac{18}{\sqrt{81}} = 2

So the correct answer is:

d. 200 and 2

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Answer:

Step-by-step explanation:

its false

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