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dexar [7]
2 years ago
8

Simplify: square root negative three and square root negative 27

Mathematics
1 answer:
VashaNatasha [74]2 years ago
7 0

The answer you are looking for is 9.

Solution/Explanation:

Writing out the expression first

√-3√-27

Don't worry. You are overthinking it. All you actually have to do is multiply both of them together

So,

√-3√-27=√81

Then, you will get √81.

This will simplify to 9. So, therefore, the final answer is 9.

Hope this helped you. Good day to you.

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C. 1/root2

Based on the information, the hypotenuse will be 6root2 because it is a 45, 45, 90 triangle. The two legs will be 6. Using SOH CAH TOA, we know that for cosine, it will be adjacent/hypotenuse. The adjacent side is 6 and the hypotenuse is 6root2. The result will be (6)/(6root2). After simplifying, we get
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1 year ago
Find the sum of the squares of the roots of 3x^2 + 4x + 12 = 0
Contact [7]

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Step-by-step explanation:

Let p and q be the roots of the equation.

So, here's how we're gonna work it out:

{p}^{2}  +  {q}^{2}  =  \\  {p}^{2}  +  {q}^{2} +2 pq - 2pq =   \\ ( {p}^{2}  +2pq +   {q}^{2}) - 2pq =  \\  {(p + q)}^{2}  - 2pq

Vieta's formulas give us the sum and the product of the roots of a quadratic equation. Using them we obtain:

  • p + q = -b / a = - 4 / 3
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{(p + q)}^{2}  - 2pq =  \\  {( -  \frac{ 4}{3} )}^{2}  - 2 \times 4 =  \frac{16}{9 }  - 8 =  \\  \frac{16 - 72}{9}  = - \frac{56}{9}

4 0
3 years ago
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Talja [164]

Good morning,

Answer:

1.678 rounded to the nearest hundredth is 1.68

Step-by-step explanation:

By looking at the number 1.678 it’s clear that the hundredth digit is 7

since 8∈{5,6,7,8,9} then we delete the 8 and add one to 7

we get 1.68 .

:)

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3 years ago
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As for the equation, 10 divided by 1 2/3 is 15
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