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Anuta_ua [19.1K]

2 years ago

11

Find the perimeter and area

1 answer:

stepladder [879]2 years ago

4 0

Answer:

32 times square root of 3. is the perimeter, area is 48 times square root of 3

Step-by-step explanation:

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A rectangle has length that is 5 less than 2 times the width. Write an expression for the area of the rectangle.

a_sh-v [17]

We are given a relationship between the sides of a rectangle, that is, the length of one of its sides is 5 less two times its width, and we are asked to find an expression for the area. Let's remember that the area of a rectangle is equal to the product of the length of its side by its width. Let "w" be the length of the rectangle and "L" its lenght, then the area is given by the following formula:

$A=Lw$

We can use the relationship given in the problem, that is, its length being five less two times its width, that is:

$L=5-2w$

Replacing in the formula for the area we get:

$A=(5-2w)w$

Now we use the distributive law:

$A=5w-2w^2$

7 0

5 months ago

At a county fair 9 people out of 1000 earned a perfect score in a carnival game what decimal represent the number of people who

coldgirl [10]

0.009 people because 9/1000 is 0.009<span />

5 0

3 years ago

Read 2 more answers

Suppose a research firm conducted a survey to determine the average amount of money steady smokers spend on cigarettes during a

olchik [2.2K]

Answer:

option (b) 0.0228

Step-by-step explanation:

Data provided in the question:

Sample size, n = 100

Sample mean, μ = $20

Standard deviation, s = $5

Confidence interval = between $19 and $21

Now,

Confidence interval = μ ± $z\frac{s}{\sqrt n}$

thus,

Upper limit of the Confidence interval = μ + $z\frac{s}{\sqrt n}$

or

$21 = $20 + $z\frac{5}{\sqrt{100}}$

or

z = 2

Now,

P(z = 2) = 0.02275 [From standard z vs p value table]

or

P(z = 2) ≈ 0.0228

Hence,

the correct answer is option (b) 0.0228

3 0

2 years ago

Mark correctly drew a heptagon on the board. How many interior angles does Mark's heptagon have?

olchik [2.2K]

There are 7 interior angles

7 0

2 years ago

14 is 7 times a number c

Stolb23 [73]

Answer:

c = 2

Step-by-step explanation:

From the statement we have that If 14 is 7 times a number c, we can write the following equation:

7c = 14. Solving for c, we have:

c = 14/7 = 2

3 0

2 years ago