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2 years ago

Given 5 blue marbles, 3 red marbles and 2 white marbles. Find the probability of choosing a red marble given that its not white

Mathematics

1 answer:

Maslowich2 years ago

6 0

Answer:

The chances you will get a red marble over a white or blue marble is 30%

Step-by-step explanation:

If you add 5 + 3 + 2 you will get 10

You then turn it into a fraction

3/10 is the chance you will get a red over a blue or white, now we need to convert it into a percentage by turning to 10 into 100 and multiplying 3 x 10

Once you have done that you should have 30/100

Take the 100 away and turn it into a percentage

The answer would be 30%

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What type(s) of symmetry does the figure have?

Troyanec [42]

Answer:

both points and rotational only

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3 years ago

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Hailey wants to buy a new pair of Vans. She found them on-line for $70. If the site is offering 15%

musickatia [10]

Answer:

It's $56 dollars

Step-by-step explanation:

$56 dollars, because I think 20% is like 14 dollars so then that gives you 70 and then you do 70 minus 14 and then that gives you 56 dollars

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2 years ago

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What is 5/40 as a decimal?

yanalaym [24]

Answer:

0.125

Step-by-step explanation:

Simplified:

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3 years ago

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An ecologist studies the fox population of the arctic circle, and observes that the population loses 1/11 of its size every 7 mo

Ksju [112]

Answer: The fox population decrease 1.298% every month.

Step-by-step explanation:

Since we have given that

Initial foxes = 170000

Every 7 months, the population loses $\dfrac{1}{11}$

So, we need to find the rate of change in population every month.

So, we will use "Unitary method":

So, In every month, the population loses $\dfrac{1}{11}\times \dfrac{1}{7}=\dfrac{1}{77}$

So, the percentage would be

$\dfrac{1}{77}\times 100=1.298\%$

Hence, the fox population decrease 1.298% every month.

5 0

3 years ago

(2x-3)^2=49<br><img src="https://tex.z-dn.net/?f=%282x%20-%203%20%29%20%5E%7B2%7D%20%3D%2049" id="TexFormula1" title="(2x - 3 )

inna [77]

$(2x-3)^2=49\iff2x-3=\pm\sqrt{49}\\\\2x-3=-7\ \vee\ 2x-3=7\ \ \ |+3\\\\2x=-4\ \vee\ 2x=10\ \ \ \ |:2\\\\x=-2\ \vee\ x=5$

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3 years ago