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evablogger [386]
2 years ago
8

Joyce says that 4 is a factor of every whole number that has a 4 in the ones place. Nathan says 2 is a factor of every whole num

ber that has a 4 in the ones place. Are they both correct? Complete the following to explain. Joyce is correct For example, 14 has a 4 in the ones place and choose... 4. Choose... Nathan is Choose... Four is Choose... and all numbers with an number in the ones place have Choose... as a factor.​
Mathematics
1 answer:
hram777 [196]2 years ago
7 0

9514 1404 393

Answer:

  • Joyce is incorrect; 14 is not divisible by 4
  • Nathan is correct; 4 is divisible by 2 and all numbers with 4 in the ones place have 2 as a factor.

Step-by-step explanation:

We know that 4 is divisible by 4, and 14 is not. It has to do with 14 = 4 + 10, where 10 does not have 4 as a factor.

On the other hand, both 4 and 14 are divisible by 2. That's because 14 = 4 + 10, where 10 has 2 as a factor.

Joyce is incorrect; Nathan is correct—for the reasons shown above.

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1 year ago
The square of a number decreased by 3 times the number 28 find all possible values for the number
stealth61 [152]

Question:

The square of a number decreased by 3 times the number is 28 find all possible values for the number  

Answer:

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Solution:

Given that the square of a number decreased by 3 times the number is 28

To find: all possible values of number

Let "a" be the unknown number

From given information,

square of a number decreased by 3 times the number = 28

a^2 - 3a = 28

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Let us solve the above quadratic equation

\text {For a quadratic equation } a x^{2}+b x+c=0, \text { where } a \neq 0

x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}

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Thus the possible values of number are 7 and -4

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