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shutvik [7]
3 years ago
12

Which of the following is the best approximation?

Mathematics
1 answer:
Fittoniya [83]3 years ago
8 0

11^2 = 121

sq root 143 rounded to nearest unit is 12

so (3×121)/12 is approx to (3×120)/12 = 30

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A bag contains 30 red and blue marbles. If 19 are blue, what fraction of the marbles are blue?
Musya8 [376]

Answer:

19%

Step-by-step explanation:

19/100. i don't think it is that simple, but i did the best i could

5 0
2 years ago
If 32^2c=8^c what is the value of c? 1 2 3 5
Elina [12.6K]

Answer:

  • as written, c ≈ 0.000979 or c = 4
  • alternate interpretation: c = 0

Step-by-step explanation:

<em>As written</em>, you have an equation that cannot be solved algebraically.

  (32^2)c = 8^c

  1024c = 8^c

  1024c -8^c = 0 . . . . . . rewrite as an expression compared to zero

A graphical solution shows two values for c: {0.000978551672551, 4}. We presume you're interested in c = 4.

___

If you mean ...

  32^(2c) = 8^c

  (2^5)^(2c) = (2^3)^c . . . . rewriting as powers of 2

  2^(10c) = 2^(3c) . . . . . . . simplify

  10c = 3c . . . . . . . . . . . . . .log base 2

  7c = 0 . . . . . . . . . . . . . . . subtract 3c

  c = 0 . . . . . . . . . . . . . . . . divide by 7

7 0
3 years ago
Two girls had 45.00 to spend. one spent 6 dollars less than twice the other. solve
Varvara68 [4.7K]

Let, money spend by jane = x

Maggie spend = 2x-6

So, x+2x-6 = 45

3x= 51

x=17, 2x-6 = 28

So, jane spend $17 & Maggie spend $28

3 0
3 years ago
the least common denominator for the sum 3/8 + 512 is 24 name another common denominator that you could use
bogdanovich [222]
You could also use 48 because 8 and 12 divide into it.
7 0
3 years ago
79+b=159 <br> b= <br> send help pls... :)
Roman55 [17]
Subtract 79 from both sides to isolate variable b. 

b = 159 - 79
b = 80
3 0
3 years ago
Read 2 more answers
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