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Dovator [93]
3 years ago
13

Find the two-digit number whose tens digit is 4 less than its units digits if the original number is 2 more than 3 times the sum

of the digits
Mathematics
1 answer:
frosja888 [35]3 years ago
7 0
Let the 2 digit number be ab remembering that ab=10a+b
a=b-4...........equation 1
10a+b=3(a+b)+2........... equation 2
take a's value in equation 1 and plug it into equation 2
10(b-4)+b=3(b-4)+3b+2
5b=30
b=6 units digit
a=6-4=2 tens unit
number is 26

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3 years ago
Triangle ABC is rotated 90 degrees clockwise about the origin to create triangle A'B'C'.
frozen [14]

Note: Consider we need to find the vertices of the triangle A'B'C'

Given:

Triangle ABC is rotated 90 degrees clockwise about the origin to create triangle A'B'C'.

Triangle A,B,C with vertices at A(-3, 6), B(2, 9), and C(1, 1).

To find:

The vertices of the triangle A'B'C'.

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(x,y)\to (y,-x)

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3 years ago
Since BC is parallel to DE, triangles ABC and ADE are similar. What are the lengths of the unknown sides? It would be a great he
bija089 [108]

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Step-by-step explanation:

In the given picture, Δ ADE is a right triangle

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Since triangles ABC and ADE are similar and corresponding sides of similar triangles are proportional therefore,

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Step-by-step explanation:

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lara31 [8.8K]
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3 years ago
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