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3 years ago

The one that said there should be a choose number of trial. the answer chose are greater or lesser

Mathematics

1 answer:

Alexeev081 [22]3 years ago

6 0

Answer:

The first option is greater. The second option is more. The third option is 50%.

Step-by-step explanation:

Flipping a coin heads or tails expected probability is 50%. The more trials there are, the more accurate the actual probability will be.

Hope this helps!

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Find the unit vector in the direction of u = (-3,2).

DENIUS [597]

$\bf \textit{unit vector for }(a,b)\implies \left( \cfrac{a}{\sqrt{a^2+b^2}}~~,~~\cfrac{b}{\sqrt{a^2+b^2}} \right)\\\\
-------------------------------\\\\
(-3,2)\qquad \stackrel{unit~vector}{\implies }\qquad \left( \cfrac{-3}{\sqrt{(-3)^2+2^2}}~~,~~\cfrac{2}{\sqrt{(-3)^2+2^2}} \right)
\\\\\\
\left( -\cfrac{3}{\sqrt{13}}~~,~~ \cfrac{2}{\sqrt{13}}\right)\\\\
-------------------------------$

$\bf \textit{and now let's \underline{rationalize} the denominator for each}
\\\\\\
-\cfrac{3}{\sqrt{13}}\cdot \cfrac{\sqrt{13}}{\sqrt{13}}\implies -\cfrac{3\sqrt{13}}{13} \qquad \qquad \qquad \qquad \cfrac{2}{\sqrt{13}}\cdot \cfrac{\sqrt{13}}{\sqrt{13}}\implies \cfrac{2\sqrt{13}}{13}
\\\\\\
\textit{and written in \underline{ai+bj form}}\qquad -\cfrac{3\sqrt{13}}{13}i~~~~+~~~~\cfrac{2\sqrt{13}}{13}j$

7 0

3 years ago

Arrange numbers in ascending order (smallest on top, largest at the bottom)

Alex Ar [27]

Answer:

1. -50

2. -49

3. 38

4. 175

Step-by-step explanation:

hope it helps

8 0

3 years ago

Read 2 more answers

2d(3*6)=48y when y=1/4

vaieri [72.5K]

Answer: d = 1/3

Step-by-step explanation: 48y = 48/4 = 12. So, 2d(18) is equal to 12. 12/18 is 2/3 so 2d has to equal 2/3. That means d = 1/3.

8 0

2 years ago

If the ordered pairs (x, -1) and (5, y) belong to the set {(a, b): b = 2a-3}, find x and y.

Anika [276]

The ordered pair is 5x|x| ^2

7 0

1 year ago

Write a story about elevation that this expression could represent: 56 + (-56)

Ostrovityanka [42]

The correct statement that represents the expression is:

An object moves towards the east (positive direction )at a distance of 56m and west (negative direction) at the same distance, the total displacement of the object is 0m

Given the expression 56 + (-56).

We can see that this is an inverse rule where a value and its negative are added together.

Let us assume the values are distance covered by an object.

The correct statement that represents the expression is:

An object moves towards the east (positive direction )at a distance of 56m and west (negative direction) at the same distance, the total displacement of the object is 0m

This show that 56 + (-56) = 56 - 56 = 0

Learn more on inverses here: brainly.com/question/17130744

7 0

2 years ago