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Anna11 [10]
2 years ago
10

The side length of an equilateral triangle is 4x – 5. Which expression represents

Mathematics
1 answer:
horsena [70]2 years ago
8 0

Answer:

12x-15

Step-by-step explanation:

A triangle has 3 sides

An equilateral triangle has 3 sides that are all the same length

The perimeter of a triangle is

P = s1+s2+s3

P = 4x-4 + 4x-5+4x-5

Combine like terms

P = 12x -15

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Step-by-step explanation:

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3 years ago
Question 8b , thanks
marta [7]

Answer:

Step-by-step explanation:

a = \frac{2b+1}{3b-1}

b = 2/3

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b)

\frac{2b+1}{3b-1}=a\\\\

Cross multiply,

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3 0
2 years ago
Solve the system using elimination<br> 3x+y=27<br> -3x+4y=-42
padilas [110]

Hello :)

3x+y=27

-3x+4y= -42

+____________

(3x -3x) + (y+4y) = (27-42)

0 + 5y = -15

y = -3

Put "-3" for "y" in the system:

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3x -3=27

3x = 30

x = 10

Answer = x:10 y: -3

Have a nice day :)

8 0
2 years ago
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