3 years ago

What is the relationship between percents and decimals

1 answer:

7 0

Decimals and percentages are both systems of designating parts of a whole. 25% of an object is the same as 1/4 of an object which is the same as .25 of an object.

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A room contains three urns: u1, u2, u3. u1 contains 3 red and 2 yellow marbles. u2 contains 3 red and 7 yellow marbles. u3 conta

Archy [21]

Answer:

$\dfrac{11}{30}$

Step-by-step explanation:

Urn U1: 3 red and 2 yellow marbles, in total 5 marbles.

The probability to select red marble is $\dfrac{3}{5}=0.6.$

Urn U2: 3 red and 7 yellow marbles, in total 10 marbles.

The probability to select red marble is $\dfrac{3}{10}=0.3.$

Urn U1: 1 red and 4 yellow marbles, in total 5 marbles.

The probability to select red marble is $\dfrac{1}{5}=0.2.$

The probability to choose each urn is the same and is equal to $\frac{1}{3}.$

Thus, the probability that the marble is red is

$\dfrac{1}{3}\cdot 0.6+\dfrac{1}{3}\cdot 0.3+\dfrac{1}{3}\cdot 0.2=\dfrac{1.1}{3}=\dfrac{11}{30}.$

4 0

3 years ago

Plz help me with 52 a and b

8090 [49]

A equals 54
im thinking b equals 12 but i could be wrong
a is right though

4 0

3 years ago

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What is the answer to number 23

vesna_86 [32]

So 50/27 is your answer

6 0

3 years ago

on square bcde if e is located at (4,-9) and d is located at (10,-5) find the perimeter of the square

mariarad [96]

Answer:

8 $\sqrt{13}$ units

Step-by-step explanation:

We know that:

P = 4a

We can find one side by distance formula:

a = $\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$
a = $\sqrt{(10 - 4)^2+(-5+9)^2} = \sqrt{36+16} = \sqrt{52} = 2\sqrt{13}$

Then the perimeter is:

P = 4*2 $\sqrt{13}$ = 8 $\sqrt{13}$ units

5 0

3 years ago

5x+3=23 what is the answer?

Margaret [11]

Answer:

Step-by-step explanation:

Sub both sides by 3 then describe 20 by 5.

5 0

3 years ago

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