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ad-work [718]
3 years ago
9

Simplify. 5 - [ - ( - 2)]

Mathematics
2 answers:
Nimfa-mama [501]3 years ago
6 0

Answer:

3

Step-by-step explanation:

1. A - times a - equals a +, which means [-(-2)] equals (2)

2. 5- (2) equals 5 - 2

3. 5-2= 3

Svetach [21]3 years ago
5 0

Answer:

3

Step-by-step explanation:

As you see in the equation, there is a simple rule to apply in any equation make you confuse with - or + symbol. When 2 minus symbol ( - ) stand together, it would become positive or plus symbol (+), so in this situation:

5 - [ - ( - 2)]

= 5 - (+ 2)

= 5 - 2

= 3

Hope this help you :3

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Answer:

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Step-by-step explanation:

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3 years ago
A shoe manufacturer was investigating the weights of men's soccer cleats. He felt that the weight of these cleats was less than
aleksklad [387]

Answer:

 The conclusion is that the researcher was correct

Step-by-step explanation:

From the question we are told that

     The sample size is  n =  13

    The sample mean is  \= x =  9.63

     The standard deviation is  s =  0.585

      The significance level is  \alpha  =  0.05

The Null Hypothesis is  H_o :  \mu = 0

The Alternative  Hypothesis  is  H_a =  \mu < 10

The test statistic is  mathematically represented as

          t =  \frac{\= x - \mu }{\frac{s}{\sqrt{n} } }

Substituting values

          t =  \frac{9.63  - 10 }{\frac{0.585}{\sqrt{13} } }

         t =  -  2.280

Now the critical value for \alpha is  

     t_{\alpha } = 1.645

This obtained from the critical value table

  So comparing the critical value of alpha and the test value we see that the test value is less than the critical value so the Null Hypothesis is rejected

 The conclusion is that the researcher was correct

 

 

6 0
3 years ago
2. 3m - 9n = 24 solve for m<br>​
PIT_PIT [208]

Answer:

m=8+3n

Step-by-step explanation:

Move all terms that don't contain m to the right side and solve.

Hope this helps <3

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2 years ago
PLS HELP
irina1246 [14]

Answer:

that's a trick question lol but I can help a bit

Step-by-step explanation:

if you add 135+125=260+4=264

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3 years ago
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