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Drupady [299]
2 years ago
14

Three times a number, decreased by 8, is the same as twice the number, increased by 15. Find

Mathematics
1 answer:
natima [27]2 years ago
3 0
3x - 8 = 2x + 15
Add 8 to both sides
3x = 2x + 23
Subtract 2x from both sides
x = 23
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timofeeve [1]
For this case we can make the following rule of three:
 23000 -------> 100%
 x --------------> 180%
 Clearing the value of x we have:
 x = (180/100) * (23000)
 x = 41400
 Answer:
 
you would expect about:
 
a) 41,400 responses
8 0
3 years ago
Solve 4^x+2 = 2^x-1. What are the exact and approximate solutions?​
Juliette [100K]

Answer:

no solution

Step-by-step explanation:

examples: 4^1 + 2 = 2^ 1 -1 and the answer is 6 = 1 which is not true. So its gonna be hard for them to have a solution.

6 0
3 years ago
Read 2 more answers
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lisov135 [29]
You can use Math-way for problems like this !! ... it’s an app it’s good for giving you answers on math equations
4 0
3 years ago
3+-1/1/3 the first half is 3+-1 the second half is 1/3
kolbaska11 [484]
\bf \cfrac{3\pm1}{\frac{1}{3}}\implies 
\begin{cases}
\cfrac{3+1}{\frac{1}{3}}\\\\
\cfrac{3-1}{\frac{1}{3}}
\end{cases}\\\\
-------------------------------\\\\

\bf \cfrac{3+1}{\frac{1}{3}}\implies \cfrac{4}{\frac{1}{3}}\implies \cfrac{\frac{4}{1}}{\frac{1}{3}}\implies \cfrac{4}{1}\cdot \cfrac{3}{1}\implies \cfrac{4\cdot 3}{1\cdot 1}\implies \cfrac{12}{1}\implies \boxed{12}
\\\\\\
\cfrac{3-1}{\frac{1}{3}}\implies \cfrac{2}{\frac{1}{3}}\implies \cfrac{\frac{2}{1}}{\frac{1}{3}}\implies \cfrac{2}{1}\cdot \cfrac{3}{1}\implies \cfrac{2\cdot 3}{1\cdot 1}\implies \cfrac{6}{1}\implies \boxed{6}
6 0
3 years ago
The Bradenton Post polled 1,356 adults in the city to determine whether they wet their toothbrush before they put toothpaste on
natulia [17]

Answer:

The mean is 0.54 and the standard deviation is 0.0135.

Step-by-step explanation:

i) the mean of the sampling distribution is 0.54

ii) the mean for the sampling distribution, p = 0.54

iii) therefore for the sampling distribution, q = ( 1 - 0.54) = 0.46

iv) the sample size of the distribution, n = 1356

v)  the\hspace{0.1cm} standard\hspace{0.1cm}  deviation\hspace{0.1cm}  s = \sqrt{\frac{p\times q}{n} }  = \sqrt{\frac{0.54\times 0.46}{1356} } = 0.0135

4 0
3 years ago
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