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3 years ago

which number has one digit that represents 10 times the value of the digit to it's right? 375,595, 545,150 and 378,658

Mathematics

2 answers:

irga5000 [103]3 years ago

7 0

Answer:

The required number is : 375,595

Step-by-step explanation:

The given numbers are : 375,595, 545,150 and 378,658

We have to tell the number that has one digit that represents 10 times the value of the digit to it's right.

For this we need to look for the number that has two same digits together, because only then the left digit will be 10 times the right digit.

Only the number 375,595 has two 5's together where the left one is 10 times the right one.

Artyom0805 [142]3 years ago

3 0

It would be 375,595.

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$x+1 = \sqrt{7x+15}$

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$x+1\geq 0 \iff x \geq -1$

because a square root is non-negative, and thus it can't equal a negative number. With this in mind, we can square both sides:

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$x-3 = \sqrt{x-1}+4 \iff x-7=\sqrt{x-1}$

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$x-7\geq 0 \iff x \geq 7$

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