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3 years ago

In Mr.Kleins class, 40% of the students are boys. What decimal represents the portion of the students that are girls?

Mathematics

1 answer:

Sidana [21]3 years ago

4 0

Percent that are girls = 100-40 = 60%
As a decimal 60% is 0.6.

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katie wants to buy a watermelon from the store if the watermelon costs $1.20 per kilogram and the watermelon weighs 6 kilograms

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Answer:

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Step-by-step explanation:

Let

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A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form or

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3 years ago

Event A: Spinning violet or yellow on the spinner.

OlgaM077 [116]

Answer:

$\sf P(A \cap B)=\dfrac{1}{4}$

Step-by-step explanation:

$\sf Probability\:of\:an\:event\:occurring = \dfrac{Number\:of\:ways\:it\:can\:occur}{Total\:number\:of\:possible\:outcomes}$

Event A - spinning violet or yellow

Assuming that the spinner has 4 different colors (red, orange, violet and yellow) - see attachment.

$\implies \sf P(A) = \dfrac{2}{4}=\dfrac{1}{2}$

Event B - rolling an even number

Assuming the number cube has 6 sides numbered 1, 2, 3, 4, 5 and 6. Therefore, the even numbers are 2, 4 and 6.

$\implies \sf P(B)=\dfrac{3}{6}=\dfrac{1}{2}$

Events A and B are independent events as the outcome of one event does not affect the outcome of the other event.

For independent events A and B:

$\implies \sf P(A \cap B)=P(A)P(B)$

To find P(A and B), substitute the found values of P(A) and P(B):

$\implies \sf P(A \cap B)=\dfrac{1}{2} \times \dfrac{1}{2}=\dfrac{1}{4}$

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1 year ago

Read 2 more answers