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koban [17]
4 years ago
5

Which expression is equivalent to ?

Mathematics
2 answers:
Natali5045456 [20]4 years ago
7 0

Answer:

FIRST OPTION.

Step-by-step explanation:

Given the expression \sqrt{\frac{2x^5}{18}}, you can find an equivalent expression simplifying.

The first step is to descompose 18 into its prime factors:

18=2*3*3=2*3^2

Remember the Product of powers property, which states that:

(a^m)(a^n)=a^{(m+n)}

Then you can rewrite the expression in this form:

 \sqrt{\frac{2x^4x}{2*3^2}

Knowing that \sqrt[n]{a^n}=a, you get the following equivalent expression:

\sqrt{\frac{2x^4x}{2*3^2}

\frac{x^2}{3}\sqrt{\frac{2x}{2}}

\frac{x^2\sqrt{x}}{3}

il63 [147K]4 years ago
3 0

Answer:

Your answer would be A

Step-by-step explanation:

First you gotta reduce that fraction. Then square root the 9 (which is 3) and as well as radicalize x^5, which is x^2/x

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For the rhombus below, find the measure of angles 1,2,3 and 4.
Alexus [3.1K]

Answer:

∠1 is 33°

∠2 is 57°

∠3 is 57°

∠4 is 33°

Step-by-step explanation:

First off, we already know that ∠2 is 57° because of alternate interior angles.

Second, it's important to know that rhombus' diagonals bisect each other; meaning they form 90° angles in the intersection. Another cool thing is that the diagonals bisect the existing angles in the rhombus. Therefore, 57° is just half of something.

Then, you basically just do some other pain-in-the-butt things after.

Since that ∠2 is just the bisected half from one existing angle, that means that ∠3 is just the other half; meaning that ∠3 is 57°, as well.

Next is to just find the missing angle ∠1. Since we already know ∠3 is 57°, we can just add that to the 90° that the diagonals formed at the intersection.

57° + 90° = 147°

180° - 147° = 33°

∠1 is 33°

Finally, since that ∠4 is just an alternate interior angle of ∠1, ∠4 is 33°, too.

5 0
3 years ago
The ELISA test was an early test used to screen blood donations for antibodies to HIV. A study (Weiss et al. 1985) found that th
patriot [66]

Answer:

0.057258

Step-by-step explanation:

From the statement of the problem, the following information were given:

  • P(Positive|HIV)=0.979
  • P(Negative|No HIV)=0.919
  • P(HIV)=0.005

The following can be derived:

  • P(Positive|No HIV)=1-P(Negative|No HIV)=1-0.919=0.081
  • P(No HIV)=1-P(HIV)=1-0.005=0.995

We are to determine the probability that a person has HIV given that they test positive. [P(HIV|Positive)]

Using Baye's theorem for Conditional Probability

P(HIV|Positive)=\dfrac{P(Positive|HIV)P(HIV)}{P(Positive|HIV)P(HIV)+P(Positive|No HIV)P(No HIV)}=\dfrac{0.979*0.005}{0.979*0.005+0.081*0.995}

P(HIV|Positive)=0.057258

The probability that a random person tested has HIV given that they tested positive is 0.057258.

5 0
4 years ago
How many 3-letter combinations can be made from this set if no letter can be repeated?
Wittaler [7]

Answer:

B 120 different combinations

Step-by-step explanation:

There are 6 letters to choose from

Picking a letter for the first spot  6

Then there are 5 letters left

Picking a letter for the second spot  5

Then there are 4 letters left

Picking a letter for the second spot  4

6*5*4

= 120

7 0
4 years ago
For the following right triangle, 12, 16, x. find the side length x
Alexeev081 [22]
So Pythagorean Theorem is a^2+b^2=c^2

So, 12^2+16^2= 400
c=400, but you need to find c^2. so do the square root of 400, which is 20. so x=20
7 0
4 years ago
Read 2 more answers
Need help alert!!!!!!!
Free_Kalibri [48]

Answer:

1- 80,000

2- 900,000

3- 300,000,000

4- one hundred three million seven hundred twenty-seven thousand thousand four hundred ninety-five

Hope this helps! :)

8 0
3 years ago
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