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2 years ago

Find the least common denominator (LCD) of 1/20 and 11/30

Mathematics

2 answers:

Sergeu [11.5K]2 years ago

5 0

Answer:

Step-by-step explanation:

To find the LCD, all you have to do is find the least common multiple (LCM) of the two denominators.

The fractions are already reduced, so you have to find the LCM of 20 and 30. The LCM of 20 and 30 is 60.

20 and 30 are easy numbers, so you can just list the multiples out.

20: 20, 40, 60, etc.

30: 30, 60

The lists both have 60, so the LCM is 60.

Another way is to prime factorize the two numbers.

20: 2^2*5

30: 2*3*5

Then, take the non-repeating factor from the second number (3) and multiply that by 30, which is 60.

Mrrafil [7]2 years ago

3 0

Answer:

Step-by-step explanation:

LCD(1 /20 , 11 /30) = LCM(20, 30) = 22×3×5 = 60

1 /20 = 3 /60

11 /30 = 22 /60

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1 point<br> 5) Solve by using the quadratic formula 8x² = 15 - 14x

kykrilka [37]

<h3>I'll teach you how to solve 8x² = 15 - 14x</h3>

----------------------------------------------------

8x² = 15 - 14x

Add 14x to both sides:

8x^2 +14x =15-14x+14x

Simplify:

8x^2 +14x =15

Subtract 15 from both sides:

8x^2+14x-15 = 15-15

SImplify:

8x^2+14x-15 = 0

Solve with the quadratic formula:

x= $\frac{-14+ \sqrt{14^2-4*8(1-15)} }{2*8}$ = 3/4

x= $\frac{-14+ \sqrt{14^2-4*8(1-15)} }{2*8}$ = -5/2

The solutions to the quadratic formula are:

x= 3/4, x=-5/2

Your Answer Is x= 3/4, x=-5/2

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2 years ago

A water slide starts at (0,144) and ends at (12,0) what is the slope of the slide

fredd [130]

Answer:

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Step-by-step explanation:

The slope of a line is just the difference of y-values divided by the difference of x-values

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Kyle and his friends had a pie eating contest. Kyle ate 1/2 of his apple.Pie. Bobby ate 1/6 of his peach pie. Joanie ate 2/3 of

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Answer:

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Step-by-step explanation:

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