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SIZIF [17.4K]
3 years ago
9

How do you use numerical expression to solve real word problem

Mathematics
1 answer:
Yuki888 [10]3 years ago
3 0
I really don’t know
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ABC is isosceles with AB=AC=8 units and BC=6 units. D and E are midpoints of AB and BC respectively. Calculate the length of DE?
Allushta [10]
The triangle is drawn and is shown in the image attached with.

We get two similar triangles. Triangle ABC and Triangle ADE. Since the triangles are similar the ratio of their corresponding sides will be the same. 

D and E are the midpoints of AB and BC, therefore, AD and AE are both 4 units in length. Using the property of similar triangles, we can say:

AD : DE= AB : BC
AD = 4 units
AB = 8 units
BC = 6 units
DE = unknown = x units

So,

4 :x = 8 : 6 \\  \\ 
 \frac{4}{x} = \frac{8}{6}  \\  \\ 
x=4* \frac{6}{8}=3 


Therefore, the length of DE will be 3 units

6 0
3 years ago
What is (6m)to the third power when m=3
tia_tia [17]
6m to the third power is 5,832
This is because 6(3)=18
18 to the third power is 5,832
7 0
3 years ago
What is the volume of a pyramid with a base area of 10 square inches and height of 9inches
Akimi4 [234]
To find the base area of a pyramid, you can use the equation:

volume = base area × height

volume = 10 × 9

volume = 90 cubed inches
8 0
3 years ago
The diagram below shows the different lengths and widths of a rectangle based on a given ratio.
Vinil7 [7]
Looking at this, the unit of 1 length is equal to 2.5 units of width. To find 6 units of length, you just multiply 6 by 2.5. Getting this gives us 15. So your answer is C.
8 0
3 years ago
How do I find the area
stiv31 [10]

Answer:

1971.68cm squared

Step-by-step explanation:

Circle to remove = 628.32

a + b / 2  x  h

area of trapezoid = 2600

2600 - 628.32 = 1971.68cm ²

8 0
4 years ago
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