Helpp me i need to get a 67 as my grade because i dont understand
2 answers:
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Answer:
7000 cal/min
Step-by-step explanation:
It is mentioned that, Lucia is using energy at a rate of 420 kilo calories per hour ice skating
We know that,
1 kilo calories = 1000 calories
Using unitary method :
420 kilo calories = 420,000 calories
Also,
1 hour = 60 minutes
In this case, Lucia is using energy per 60 minutes = 420,000 calories. So,energy used by her per minute is :
Hence, Lucia is using 7000 calories per minute.
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Answer:
The area of the shape is .
Step-by-step explanation:
The shape in the graph is a composite figure is made up of several simple geometric figures such as triangles, and rectangles.
Area is the space inside of a two-dimensional shape. We can also think of area as the amount of space a shape covers.
To calculate the area of a composite shape you must divide the shape into rectangles, triangles or other shapes you can find the area of and then add the areas back together.
First separate the composite shape into three simpler shapes, in this case two rectangles and a triangle. Then find the area of each figure.
To find the area of a rectangle, we multiply the length of the rectangle by the width of the rectangle.
The area of the first rectangle is
The area of the second rectangle is
The area of a triangle is given by the formula where <em>b</em> is the base and <em>h</em> is the height of the triangle.
The area of the triangle is
Finally, add the areas of the simpler figures together to find the total area of the composite figure.