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Mrrafil [7]
3 years ago
10

Help on math please answer both

Mathematics
1 answer:
ELEN [110]3 years ago
5 0
To get from red to blue in the first one, we multiply it by the blue side length (6) over the red side length (11) since they are similar, getting 6/11. Since the area is base*height for a parallelogram , we can assume that the height of the blue parallelogram is 6/11th of the red one. Therefore, 6/11(height)*(6/11)(base)=(6/11)^2=36/121. The Area of Similar Polygons Theorem states that to get from the ratio to the sides to the ratio to the area, you simply square the ratio of the sides. For red to blue for the pentagons, we do blue/red=7/4. Square that for the areas, which is (7/4)^2=49/16
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60 feet of wire is needed for a connection. An 80 meter roll of vire is to be
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answer:

61.712

Step-by-step explanation:

60 feet = 18.288

left wire = 80-18.288 = 61.712

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How can mental math help you find solutions to inequalities?
shepuryov [24]

Answer:

There are many examples the basics are also easy to remember.

Step-by-step explanation:

We can input these for the following equation.

x > 5

(x is greater than 5)

Then compare to - x < 5

(minus x is less than 5)

We try a sum

3x -2 ≤ 1

we can then balance subtract -2

3x ≤ -1

then divide by 3

x= -1 /3

We try another value

3x -2 ≤ 0

1 ≤ 3x

1/3 ≥ x

We can check that each equality fits and alter the number accordingly.

For the first one we are saying it is no greater than 1

For the second we say it is greater than zero.

We are able to prove both have the answer.

Just like when we look for negative percentages and count down we record this as we count in mental math.

7 0
3 years ago
A cone is cut by a plane parallel to its base. The small cone on top is similar to the large cone, with a similarity ratio of 1
Pavel [41]

Answer:

<h2>1:1</h2>

Step-by-step explanation:

The ratio between the volume of the small cone to that of the frustum is 1:1.

Notice that the bigger cone is double than the smaller cone, which means the smaller cone is half of the volume of the bigger cone, if you wipe the small one, you would have the frustum with the same volume as the wiped part, because if you delete the smaller cone, you would be deleting half volume of the bigger cone, giving at the end a relation 1 : 1 between the frustum and the smaller cone.

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3 years ago
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