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marysya [2.9K]
3 years ago
6

PLEASE HELP 15 POINTS!!

Mathematics
1 answer:
tigry1 [53]3 years ago
3 0
28. 6x+42-20=6x
42-20=0
42-20 gives you 22
22=0
Statement is false

30. -2x-4=-2x-3-1
-2x-4=-2x-4
Statement is true because both sides are identical

32. 2x+8-5=2x+3
8-5=3
3=3
Statement is true for any value of x

34. 3x+(x+4)=18
3x+x+4=18
4x+4=18
4x=18-4
4x=14 (next divide both sides by 4)
x= 7 over 2
7/2
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Step-by-step explanation:

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Fill in the other coordinate for the line y=23x+3 y = 2 3 x + 3 : (3, )
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The value of y varies directly with x. When y = 75, 7 = 1. What is the value of y when x is 272
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I’m assuming that 7 means x, and honestly all you have to do is multiply. x= 1 , y= 75.. so just multiply 75 and 272. The answer is 20,400.
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Find the length of the missing side<br><br> a) 17 cm<br> b) 22 cm<br> c ) 15 cm<br> d) 13 cm
Black_prince [1.1K]

Answer:

Step-by-step explanation:

You just have to use the Pythagorean theorem which is A squared plus B squared = C squared. So you have A and B already so just put it in an equation

A^{2} +B^2=C^2\\5^2+12^2=C^2\\169=C^2\\13=C

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