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3 years ago

HELP PLEASE!!!!!

Mathematics

1 answer:

Tasya [4]3 years ago

6 0

Answer:

233 Times

Step-by-step explanation:

In a standard cube, there are 6 faces labelled 1 to 6.

Numbers less than 5=1,2,3,4

The probability of rolling a number less than 5 =4/6

Therefore, if the standard number cube is rolled 350 times.

Number of Expected Outcome Less than 5

$=\dfrac{4}{6}X350$

$=233.33\\\approx 233$ (to the nearest integer)$

We would roll a number less than 5 233 times.

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3 years ago

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3 years ago

Read 2 more answers

PLEASE AND THANK YOU CONFUSED ON THIS

ICE Princess25 [194]

After staring at this for a few seconds, I think the equation

$-5\sqrt{10}\cdot\sqrt{15}=[1]\sqrt{[2]}$

is asking you to simplify the left hand side so that it has a form matching the right hand side, and [1] and [2] are placeholders. My guess is that they're supposed to be integers.

Notice that

$\sqrt{10}=\sqrt{5\cdot2}=\sqrt5\cdot\sqrt2$

$\sqrt{15}=\sqrt{5\cdot3}=\sqrt5\cdot\sqrt3$

$\implies\sqrt{10}\cdot\sqrt{15}=(\sqrt5)^2\cdot\sqrt2\cdot\sqrt3=5\sqrt{2\cdot3}=5\sqrt6$

Then multiplying by -5, we have

$-5\sqrt{10}\cdot\sqrt{15}=-25\sqrt6$

so I believe [1] = -25, and [2] = 6.

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3 years ago