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3 years ago

5

Please answer: A A piece of wood that is 7.07 centimeters long. Then she sawed 0.7 centimeters off the end. How long is the piec

e of wood now?

2 answers:

Lynna [10]3 years ago

5 0

The piece of wood is 6.37 cm long

lukranit [14]3 years ago

4 0

Answer:

6.37 cm

Step-by-step explanation:

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The perimeter of a rectangular room is 60 feet. Let pie be the width of the room (in feet) and let y be the length of the room (

Aleks04 [339]

Answer:

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3 years ago

consider the equation is Y equals 1/square root of x and y=x-2. approximate solution of the system equations

emmasim [6.3K]

Answer:

$x=1$ and $x=4$

Step-by-step explanation:

We have the following system of equations:

$y=\sqrt{x}$ and $y=x-2$

To solve the problem, we need to equal the two equations:

$x-2=\sqrt{x}$ ⇒ $(x-2)^{2} =x$ ⇒ $x^{2} -4x + 4 = x$

⇒ $x^{2} -5x + 4 = 0$

So you need to find two numbers that added equal to 5 and multiplied equal to 4. These two numbers are $x=-1$ and $x=-4$ .

Then, the factorized form of the polynomial is: $(x-1)(x-4)$ .

The, the solution to the system of equations is: $x=1$ and $x=4$ .

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3 years ago

Evaluate each expression a3 for a=5

nadezda [96]

I'm assuming you meant to say a^3. If so, then

a^3 = a*a*a
a^3 = 5*5*5
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3 years ago

How many natural numbers N have the property among 1,2,..........,N exactly 30% are divisible by 3?

k0ka [10]

Answer:

The answer is B. 2.

Step-by-step explanation:

We know that for N = 1 and N = 2, none of them are divisible by 3.

For N = 3, 33.33% are divisible by 3. For N = 4, 25% (which is already less than 30%), so N = 5 would also be less.

At N = 6, we're back up to 33.33%. N = 7 is already less than 30%.

At N = 9, you guessed it, 33.33%. N = 10 is 30% (3, 6, and 9). So we have one case.

Moving along, at N = 18, 33.33%. N = 20 is again 30% (3, 6, 9, 12, 15, and 18). Two cases now.

Finally, at N = 21, again 33.33%. N = 22 and N = 23 are both greater than 30%. As we continue this, for any N after 20, we will always be greater than 30%.

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3 years ago

298, 209, 129, 58, -4 continue the sequence

anastassius [24]

Answer:-

-93

Step-by-step explanation:

You keep on subtracting 98 from it.

3 0

3 years ago