All categories

3 years ago

The width of the rectangle is 40% of its length. What is the area of the rectangle?

Mathematics

1 answer:

12345 [234]3 years ago

3 0

Answer:

160in²

Step-by-step explanation:

40% = 0.4 = 4/10

The length is 20, 40% of that is (0.4)(20) = 8in

Length * width . = 20*8 = 160in²

You might be interested in

Can somebody write me a 5 sentence paragraph summary about geometry ??

kotegsom [21]

Step-by-step explanation:

Geometry is one of the oldest branches of math. Geometry is mostly about distance, shape, size, and relative position of figures. It is related to measurement, relationships of points, lines, angles, surfaces, and solids. There are 8 types of Geometry and the basic concepts of Geometry are point, line and plane. It isn't possible to exactly define the terms, however, we know it is refers to the mark of the position and has an accurate location.

Hope this helps :)

7 0

3 years ago

Michelle buys a rug for $36 and sells it for $90. What was the value of her markup, expressed as a percent?

Rama09 [41]

Her markup was about 60%.

4 0

4 years ago

Read 2 more answers

escribe en cada fila dos divisiones que den el cociente o resultado que se te indica en la primera columna matemáticas con foto

Ann [662]

Answer:

I don't know what you said

Step-by-step explanation:

But thanks for the points.

7 0

3 years ago

The height, h, in feet of the tip of the hour hand of a wall clock varies from 9 feet to 10 feet. Which of the following equatio

bixtya [17]

The correct option is (b) h=0.5cos( $\pi$ /6t)+9.5.

The equations can be used to model the height as a function of time, t, in hours is h=0.5cos( $\pi$ /6t)+9.5.

<h3>Equation of cosine function:</h3>

The following is a presentation of the cosine function's generic form;

y = a + cos(bx - c) + d

amplitude = a

b = cycle speed

Calculation for the model height;

The height, h (feet) of the tip of the hour hand of a wall clock varies from 9 feet to 10 feet.

Obtain amplitude 'a' as

$\begin{aligned}a &=\frac{\text { Maximum value }-\text { Minimum value }}{2} \\a &=\frac{10-9}{2} \\a &=\frac{1}{2} \\a &=0.5\end{aligned}$

The time 'T' is calculated as-

$\begin{aligned}&\mathrm{T}=\frac{2 \pi}{\mathrm{b}} \\&12=\frac{2 \pi}{\mathrm{b}} \\&\mathrm{b}=\frac{2 \pi}{12} \\&\mathrm{~b}=\frac{\pi}{6}\end{aligned}$

Now, calculate 'd'

$\begin{aligned}&\mathrm{d}=\frac{\text { Maximum value }+\text { Minimum value }}{2} \\&\mathrm{~d}=\frac{10+9}{2} \\&\mathrm{~d}=\frac{19}{2} \\&\mathrm{~d}=9.5\end{aligned}$

Therefore, with the height as a function of time, t, expressed in hours, can be modeled by the following equations:

h=0.5cos( $\pi$ /6t)+9.5

To know more about the general equation of a cosine function, here

brainly.com/question/27587720

#SPJ4

The complete question is-

The height, h, in feet of the tip of the hour hand of a wall clock varies from 9 feet to 10 feet. Which of the following equations can be used to model the height as a function of time, t, in hours? Assume that the time at t = 0 is 12:00 a.m.

A. h=0.5cos( $\pi$ /12t)+9.5

B. h=0.5cos( $\pi$ /6t)+9.5

C. h=cos( $\pi$ /12t)+9

D. h=cos( $\pi$ /6t)+9

7 0

2 years ago

The manufacturers of m&m's claim that 20% of the milk chocolate m&m candies are orange. find the mean and standard devia

lora16 [44]

T<span>he mean of a sampling distribution of a sample with proportion, p and sample size, n is given by $\mu=np$ .

</span>T<span>he standard deviation of a sampling distribution of a sample with proportion, p and sample size, n is given by $\sigma= \sqrt{np(1-p)}$

</span>Given that t<span>he manufacturers of m&m's claim that 20% of the milk chocolate m&m candies are orange. The proportion is p = 0.2

The mean of the sampling distribution of the sample proportion of orange m&m's for samples of size 100 is given by $\mu=100(0.2)=20$

</span><span>The standard deviation of the sampling distribution of the sample proportion of orange m&m's for samples of size 100 is given by $\sigma= \sqrt{100(0.2)(1-0.2)} = \sqrt{16} =4$ </span>

8 0

3 years ago