3 years ago

Which number below is an integer but not a natural number?

Mathematics

1 answer:

tamaranim1 [39]3 years ago

4 0

Answer:

C) -5

Step-by-step explanation:

-5 is an integer but not a whole number or a natural number.

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HELP please this is a TEST!!

stealth61 [152]

The answer is y=-3/2x +3 so D

8 0

3 years ago

Write the number below as a fraction in its simplest form<br> 0.569

san4es73 [151]

Answer:

$\binom{569}{1000}$

Step-by-step explanation:

Step 1:

$\binom{0.569}{1}$

Step 2:

Then multiply both by 1000

$\binom{569}{1000}$

It cant be simplifyed further so its in simplest form

8 0

3 years ago

64 POINT QUESTION<br><br> √(5-2x) - √(2-x) = 1

Ivanshal [37]

Answer:

x = 2 and x = -2

Step-by-step explanation:

The easiest way is to guess. We know that you can't have a square root of a negative number. This constrains x between negative infinity to 2. Testing 2 and -2, we see that it satisfy the equation.

The more systematic approach is shown below

$\sqrt{5-2x}-\sqrt{2-x}=1 \\\sqrt{5-2x}-\sqrt{2-x}+\sqrt{2-x}=1+\sqrt{2-x} \\\sqrt{5-2x} = 1+\sqrt{2-x}$

$5-2x=(1+\sqrt{2-x})^2\\5-2x=1+2\sqrt{2-x}+2-x\\2-x=2\sqrt{2-x}\\1-0.5x=\sqrt{2-x}\\(1-0.5x)^2=2-x\\1-x+0.25x^2=2-x\\0.25x^2-1=0\\0.25x^2 = 1\\x^2 = 4\\x = +/-2$