3 years ago

-5(3x – 1) – 20 = 7(5) – 5

Mathematics

1 answer:

AVprozaik [17]3 years ago

6 0

Answer:

x = -3

Step-by-step explanation:

-5(3x - 1) - 20 = 7 * 5 -5

-15x + 5 - 20 = 35 -5

-15x - 15 = 30

-15x = 45

x = -3

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Y = –3x – 5 help I don’t know the answer

ankoles [38]

Answer:

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Step-by-step explanation:

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3 years ago

What is the value of x if HF = 4x+1 and AB = 12x-3?| Given m

Reptile [31]

Answer: x = 1.25

Step-by-step explanation:

HF - is the middle line of the triangle ABC.

$HF=\dfrac{1}{2} AB\\\\HF=4x+1\\AB=12x-3\\\\4x+1=\dfrac{1}{2} \cdot (12x-3)\\\\4x+1=\dfrac{12x-3}{2} \\\\(4x+1) \cdot 2 =12x-3\\8x+2=12x-3\\8x+2-12x=12x-3-12x\\-4x+2=-3\\-4x+2-2=-3-2\\-4x=-5\\-4x \cdot (-1)=-5 \cdot (-1)\\4x=5\\4x \div 4=5 \div 4\\x=1.25$