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sergij07 [2.7K]
2 years ago
5

What is the value of \sqrt{21} rounded to the nearest tenth

Mathematics
1 answer:
mixer [17]2 years ago
7 0

Answer:

4.5

explanation:

4.5 x 5(This number is not exactly important, but is used as an example)

Is extremely close to the true square root of 21.

That is 4.58257569495584 <em>unrounded.</em>

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​Solve the absolute value equation. Check for extraneous solutions: |9x-3|=12
STatiana [176]

ANSWER: x=5/3, -1. Good luck. Hope this suffices.

Explanation for x=-1: |9x-3|=12. Lets take the absolute value brackets away for a sec. Add 3 to both sides 9x-3+3=-12+3, simplify: 9x=-9, divide both sides by nine:9x/9=-9/9. And that means that x=-1.

Explanation for x=5/3: |9x-3|=12. Add 3. 9x-3+3=12+3. Simplify: 9x=15. Divide both sides by 9. 9x/9=15/9. Simplify: x=5/3

5 0
2 years ago
What is the reciprocal of x^2/6x?
Rzqust [24]

6x / x²

the reciprocal of a number n is \frac{1}{n}

the reciprocal of \frac{x}{y} is \frac{y}{x}

The product of a number and it's reciprocal = 1


4 0
3 years ago
Help please and thank you
lara [203]
Cannot be determined.
Area or perimeter should be provided to calculate the lenght but its not.
8 0
3 years ago
Choose the correct simplification of (7x3y3)2.<br><br> 14x6y6<br> 49x5y5<br> 49x6y6<br> 14x5y5
dolphi86 [110]
The answer would be the first one.

I find it easier to expand the equation (you still get the same answer).

= 2 * 7x + 2 * 3y + 2 * 3
= 14x + 6y + 6

Hope this helps!
8 0
2 years ago
Read 2 more answers
Can someone please help me factor and write the equations for these two problems ?
prisoha [69]

Answer:

Step-by-step explanation:

Asymptotes 3

g(x) = \frac{3x}{x^2-3x-10}

Factors of denominator will be,

x² - 3x - 10 = x² - 5x + 2x - 10

                 = x(x - 5) + 2(x - 5)

                 = (x + 2)(x - 5)

Therefore, factored form of g(x) will be,

g(x) = \frac{3x}{(x + 2)(x - 5)}

Asymptotes 4

h(x) = \frac{(x-5)}{x^{2} + 14x + 40}

      = \frac{x-5}{x^{2}+10x+4x+40}

      = \frac{x-5}{x(x+10)+4(x+10)}

      = \frac{x-5}{(x+10)(x+4)}

5 0
3 years ago
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