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Novosadov [1.4K]
3 years ago
11

What is the value of x?

Mathematics
2 answers:
Aneli [31]3 years ago
7 0


1)4x - 30 = 2x + 20 
2x = 50
x = 25 
2)4x - 30 = 3x - 5
x = 25
3)3x - 5 = 2x + 20
x = 25

 ΔABC = equilateral 
ira [324]3 years ago
3 0
If ∡A ≡ ∡B ∡C   ⇒   ΔABC = equilateral ⇒ AB = BC = AC

3x - 5 = 2x + 20
 (AB)      (BC)

3x - 2x = 20 + 5 

x = 25


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Answer:

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Step-by-step explanation:

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collect all the like terms

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3 years ago
What is the ordered pair solution to the system y= -4x and y=2x+12 ??
german

Answer:

The ordered pair solution is (-2, 8)

Step-by-step explanation:

y = -4x ------ equation 1

y = 2x + 12 ---- equation 2

We solve for x by substitution;

Substituting the value of y into equation 2;

y = 2x + 12

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Substituting the value of x;

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PROOF;

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8 0
3 years ago
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Step-by-step explanation:

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C=-4-3/2=-7/2
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3 years ago
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