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Ghella [55]
3 years ago
12

Lizzie came up with a divisibility test for a certain number $m \neq 1$:

Mathematics
1 answer:
fiasKO [112]3 years ago
4 0

Answer:

Lizzie came up with a divisibility test for a certain number $m \neq 1$:

Break a positive integer n into two-digit chunks, starting from the ones place. (For example, the number 354764 would break into the two-digit chunks 64, 47, 35.

Find the alternating sum of these two-digit numbers, by adding the first number, subtracting the second, adding the third, and so on. (In our example, this alternating sum would be 64-47+35=52.

Step-by-step explanation:

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7 0
3 years ago
Kareem started a race at 3:03 PM and finished it at 3:41 PM.
Blababa [14]

Answer:

38minutes

Step-by-step explanation:

41-3=38

5 0
2 years ago
ms. jeffers is splitting $775 among her three sons. of the oldest gets twice as much as the youngest and the middle son gets $35
Angelina_Jolie [31]

The oldest son will get $370, the middle will get $220 and the youngest will get $185.

Step-by-step explanation:

Given,

Total amount to be split = $775

Let,

Oldest son's share = x

Middle son's share = y

Youngest son's share = z

According to given statement;

x+y+z=775     Eqn 1

the oldest gets twice as much as the youngest

x = 2z             Eqn 2

the middle son gets $35 more than the youngest

y = z+35         Eqn 3

Putting value of x and y from Eqn 2 and 3 in Eqn 1

2z+(z+35)+z=775\\2z+z+35+z=775\\4z=775-35\\4z=740\\

Dividing both sides by 4

\frac{4z}{4}=\frac{740}{4}\\z=185

Putting z=185 in Eqn 2

x=2(185)\\x=370

Putting z=185 in Eqn 3

y=185+35\\y=220

The oldest son will get $370, the middle will get $220 and the youngest will get $185.

Keywords: linear equation, substitution method

Learn more about substitution method at:

  • brainly.com/question/11175936
  • brainly.com/question/11203617

#LearnwithBrainly

4 0
3 years ago
Professor Stats has 40 students in her statistics class. 24 of the students are male. If she randomly selects 6 of her students
Aleonysh [2.5K]

Answer:

the answer is 332

Step-by-step explanation:

quizlet

7 0
3 years ago
If you were constructing a 99% confidence interval of the population mean based on a sample of n 1) = 25 where the standard devi
svetlana [45]

Answer:

We want a confidence of 99% so then the significance level would be 1%

The degrees of freedom are given by:

df = n-1= 25-1=24

And the critical value using the significance level \alpha=0.01 and \alpha/2 =0.005 and the critical value would be:

t_{\alpha/2}= \pm 2.797

Step-by-step explanation:

We know the following info :

s= 0.05 represent the standard deviation from the sample

n = 25 represent the sample size selected

We want a confidence of 99% so then the significance level would be 1%

The degrees of freedom are given by:

df = n-1= 25-1=24

And the critical value using the significance level \alpha=0.01 and \alpha/2 =0.005 and the critical value would be:

t_{\alpha/2}= \pm 2.797

3 0
2 years ago
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