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3 years ago

Please help!! Area of Trapezoids and Triangles

Mathematics

1 answer:

Ad libitum [116K]3 years ago

8 0

Answer: Area of the shape is 168 ft.

Step-by-step explanation: Split the shape into 2 shapes: A rectangle and a triangle.

Area of the rectangle shape is 144 and the area of the triangle is 24. Add them and you get 168.

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Write the augmented matrix for the following system of equations.<br> x - 2 = 0<br> 2y = 4 - 2

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9514 1404 393

Answer:

$\left[\begin{array}{cc|c}1&0&2\\0&2&2\end{array}\right]$

Step-by-step explanation:

The system of equations can be written in standard form as ...

x + 0y = 2

0x +2y = 2

The augmented matrix representation of these is ...

$\left[\begin{array}{cc|c}1&0&2\\0&2&2\end{array}\right]$

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4 years ago

Read 2 more answers

The U.S. Energy Information Administration (US EIA) reported that the average price for a gallon of regular gasoline is $3.94 (U

tekilochka [14]

Answer:

a) 25

b) 49

c) 97

Step-by-step explanation:

The sample size is calculated using the formula, n = $(\frac{\sigma\times z}{\textup{Margin of error}})^2$

Now,

for 95% confidence level value of z-factor = 1.96

Given:

Mean = $3.94

standard deviation = $0.25

thus,

a) for margin of error = $0.10

n = $(\frac{\sigma\times z}{\textup{Margin of error}})^2$

n = $(\frac{0.25\times1.96}{\textup{0.10}})^2$

n = 4.9²

n = 24.01 ≈ 25 (Rounded off to next integer)

b) for margin of error = $0.07

n = $(\frac{\sigma\times z}{\textup{Margin of error}})^2$

n = $(\frac{0.25\times1.96}{\textup{0.07}})^2$

n = 7²

n = 49

c) for margin of error = $0.05

n = $(\frac{\sigma\times z}{\textup{Margin of error}})^2$

n = $(\frac{0.25\times1.96}{\textup{0.05}})^2$

n = 9.8²

n = 96.04 ≈ 97 (Rounded off to next integer)

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4 years ago

Please help!! Area of Trapezoids and Triangles ​

Please help!! Area of Trapezoids and Triangles