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Juliette [100K]
3 years ago
14

If a = 5 and b = 2 and c= 3, explain why a + b/c -3 cannot be evaluated

Mathematics
2 answers:
galben [10]3 years ago
6 0

Answer:

Dividing by 0 is impossible

Step-by-step explanation:

The equation rewritten is

(5) + (2) / (3) - 3

3 - 3 = 0

2 / 0 is impossible

avanturin [10]3 years ago
3 0
A+b is 5+2 which equals 7
c=3 but 7 cannot be divided by 3.
which would be why this cannot be evaluated
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Set up and solve the following using dimensional analysis.
Softa [21]
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      (See explanation at the bottom)

         =      (5400 inch) x (1 foot / 12 inch) x (1 mile / 5280 foot)

         =      (5400 x 1 x 1 / 12 x 5280)  (inch - foot - mile / inch - foot) 

         =          0.0852  mile  


2).  Multiply (16 week) by (7 day/week) then by (24 hour/day)
       then by (60 minute/hour) then by (60 sec/minute).

3).  Multiply (54 yards) by (3 foot/yard) then by (1 meter/3.28 foot)
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4).  Multiply (36 cm/second) by (3600 second/hour) then by (1 meter/100 cm)
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5).  Look up how many grams in a pound  ('P')
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      Multiply (1.09 g/mL) by ( 1 pound/ P gram) then by (1 gallon/ G mL)

6).  Multiply (32 foot/sec) by (1 meter / 3.28 foot) then by (60 sec/minute).


Each time I told you to multiply by something, it was always a fraction
where the numerator and denominator are equal, like (60 seconds/minute)
or (1 foot / 12 inch).  Since the top and bottom of the fraction are equal, the
value of the fraction is ' 1 ' , and multiplying by it doesn't change the value,
it only changes the units ... that's what this whole exercise is about.
When you multiply, KEEP the units in the product, and then, after you multiply, you can 'cancel' units out of the top and bottom of the product.
Like if you have 'feet' on top and bottom, just cross them out.  When you're done, if you did it correctly, the last unit you end up with will be the one you want.      
4 0
3 years ago
Reggie needs 24 feet of rope to make a tire swing. He has 10 yards of rope. Is this enough for him to make his swing? Explain.
Luden [163]

Answer:

8 yards < 10 yards

He has enough.

Step-by-step explanation:

1 yard = 3 feet

y yards = 24 feet

\frac{1}{3} :\frac{y}{24}

y · 3 = 1 · 24

3y = 24

3y ÷ 3 = 24 ÷ 3

y = 8

24 feet = 8 yards

8 yards < 10 yards

3 0
2 years ago
How many times does 50 go into 4000
iVinArrow [24]
Well, if you just divide 4000 by 50, you can see that the answer will come out as:
<em><u>80
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~TO check: 80 multiplied by 50 would come out to the answer of 4,000.
<em>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</em><em><u>
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3 years ago
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Kamila [148]

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Step-by-step explanation:

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Using Rise/Run, the answer would be y= -3/4x + 3.

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