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qwelly [4]
3 years ago
7

Find the missing length

Mathematics
2 answers:
SVEN [57.7K]3 years ago
7 0

The\: missing\: length\: is\: 5

leonid [27]3 years ago
4 0

Answer:

? = 5

Step-by-step explanation:

Since the figures are similar then the ratios of corresponding sides are equal, that is

\frac{21}{7} = \frac{15}{x} ( cross- multiply )

21x = 105 ( divide both sides by 21 )

x = 5

That is ? = 5

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Answer:

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Step-by-step explanation:

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sdas [7]

Answer:

\boxed{\mathrm{view \: explanation}}

Step-by-step explanation:

2)

a) elimination method

b) substitution method

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For the first part we can elimate the y variable by subtracting the equations. We can then find the value of x.

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For the third part we can substitute y as 4x+3 in the first equation and solve for x.

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8 0
3 years ago
Solve the system of equations. y = x − 5 and y = x2 − 5x + 3 A. (-4,-9) and (-2,-7) B. (4,-9) and (2,-7) C. (4,-3) and (2,-1) D.
larisa [96]

Answer:

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Step-by-step explanation:

Given the 2 equations

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Equate each factor to zero and solve for x

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4 0
3 years ago
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Fudgin [204]

Answer:

x and EAF are 27 degrees

Step-by-step explanation:

Since GAF is a right angle as indicated by the little square, GAC and CAF must add up to 90 degrees. Therefore, x is 90-63=27 degrees. The situation is the same for angle EAF. Hope this helps!

7 0
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