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miv72 [106K]
3 years ago
8

4x-2y=14

Mathematics
2 answers:
Blababa [14]3 years ago
4 0
4x - 2y = 14
y = 0.5x -1

Get just one variable on one side for both equations.

4x - 2y = 14 ⇒ 4x = 2y + 14 ⇒ 4x - 14 = 2y
y = 0.5x - 1 ⇒ x - 2 = 2y

Use the transitive property and then solve for x.

x-2 = 4x-14
12 = 3x
x = 4

<em>Edit: Apprently I didn't use substitution. Oops! Sorry...</em>
mamaluj [8]3 years ago
3 0
4x-2(1/2x-1)=14
4x-x+2=14. 1=1/2(4)-1
3x+2=14. 1=2-1
3x=12. 1=1
X=4
Y=1/2(4)-1
Y=2-1 Y=1
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Read 2 more answers
Help me with a. b. c. I need help
hammer [34]

Answer:

a) Perimeter = 20.5 Inches

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Step-by-step explanation:

a) Perimeter = sum of all the sides

= 8+7.5+5

=20.5

Perimeter = 20.5 Inches

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b)  Perimeter = Sum of all the sides

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P=61.4

Perimeter is 61.4 Cms

Area of trapezium = \frac{1}{2} \times height  \times (sum \ of \ parallel \ sides)

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Area is 210 Sq cm

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3 years ago
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BlackZzzverrR [31]

Answer:

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Step-by-step explanation:

using Pythagoras theorem,

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33 + l² = 49

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l = √16

l = 4

4 0
3 years ago
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