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3 years ago

What is the least common denominator (LCD) of 1/2 and 2/3 ?

2 answers:

8 0

So basically you just want to find the LCM of the denominators shown, or 2 and 3.

So in this case, you could use the most inefficient method, or listing the multiples out:

2 : 2, 4, 6

3: 3, 6, 9

And as you can see, the first multiple that matches is 6. So your answer would be B, 6.

kherson [118]3 years ago

6 0

Answer:

B(6

Step-by-step explanation:

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Solve the following system of equations algebraically: Y = x^2 + 8x – 9 Y = 2x + 7

julia-pushkina [17]

Use simultaneous equations:
2x + 7 = x^2 + 8x - 9
7 = x^2 + 6x - 9
16 = x^2 + 6x
+ or - 4 = 7x
answer is
-4/7 or 4/7

3 0

2 years ago

Using approciate properties find -4/7*3/5+4/7*-1/5+2/5*-4/5

slega [8]

Answer: 0.548

Step-by-step explanation:

First you need to remember the formula for PEMDAS(Parenthesis,exponents,multiplication,divison,addition,subtractio)

you can do either multiplication or divison whichever comes first, same with addition+subtraction.

the underlined means to simplify

1.-0.57x3/5+4/7x-1/5+2/5x-4/5

2.-1.71/5+4/7x-1/5+2/5x-4/5

3.-0.342+4/7x-1/5+2/5x-4/5

4.-0.342+0.57x-1/5+2/5x-4/5

5.-0.342+0.57x-0.2+2/5x-4/5

6.-0.342+0.114+2/5x-4/5

7.-0.342+0.114+0.4x-4/5

8.-0.342+0.114+-1.6/5

9.-0.342+0.114+-0.32

10.-0.228+-0.32=-0.548

i did this all in one go so......

8 0

2 years ago

Find the slope of a ski run that descends 15 feet for every horizontal change of 24 feet.

Ivahew [28]

The answer is 360 -15 times -24 equals 360

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3 years ago

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HELPPP MY MATH HOMEWORK!!!

11Alexandr11 [23.1K]

D and then A I would say

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2 years ago

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Which equation has no solution?

Andreas93 [3]

Answer:

D has no solution

I hope this helps a little bit.

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3 years ago