3 years ago

Find the least common multiple (LCM) of 54 and 72. A) 9 B) 27 C) 108 D) 216

Mathematics

2 answers:

adelina 88 [10]3 years ago

5 0

LCM (54,72):
54, 108, 162, 216...
72, 144, 216...
Answer: D) 216

True [87]3 years ago

4 0

The lowest common multiple is 216 (D)

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D = b^2 -4ac solve for a 2/3 (x-18y) = 6y solve for x

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Answer:

a = $\frac{b^2-d}{4c}$

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Step-by-step explanation:

Order of Operations: BPEMDAS

Question 1

Step 1: Write out discriminant

d = b² - 4ac

Step 2: Subtract b² on both sides

d - b² = -4ac

Step 3: Divide both sides by -1

b² - d = 4ac

Step 4: Divide both sides by 4c

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Question 2

Step 1: Write out equation

2/3(x - 18y) = 6y

Step 2: Distribute parenthesis

2/3x - 12y = 6y

Step 3: Isolate x by adding 12y on both sides

2/3x = 18y

Step 4: Divide both sides by 2/3

x = 27y

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Step-by-step explanation:

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