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Leviafan [203]
3 years ago
9

Sara worked 24 hours last week. Joan worked for hours less than Sara, and Erin worked half as many hours as Joan. How many hours

did Sara, Joan, and Erin work last week?
Mathematics
1 answer:
Vaselesa [24]3 years ago
3 0
Sara worked 1 day last week
Joan worked for 20 hours last week
And Erin worked for 10 hours last week
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2 years ago
Fifty-five percent of the members of the junior varsity swim team wear glasses. Of the team memebers who do not wear glasses, 30
GarryVolchara [31]

the probability that a randomly chosen member of the JV swim team does not wear glasses and is in the 10th grade is 14%.

Given, the members of the junior varsity swim team wear glasses is 55%.

And the members of junior varsity swim team who do not wear glasses and in 10th grade is 30%.

Let the total no. of members be x.

So, the members of the junior varsity swim team wear glasses (55%),will be

0.55x.

The total number of members not wearing glasses, will be

x - 0.55 x = 0.45 x.

Now, the no. of members not wearing glasses and in 10th grade will be,

\frac{0.45x\times30}{100} =0.135x

We know that the probability of an event E, P(E) will be,

P(E)=\frac{No.\ of Favourable\ outcomes}{total \ no. \ of \ outcomes}

So, the probability for no. of members not wearing glasses and in 10th grade will be,

P(E)=\dfrac{0.135x}{x}

P(E)=0.135\\\\P(E)=13.5 \%

Hence the nearest whole percent of probability is 14%.

For more details on probability follow the link:

brainly.com/question/795909

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2 years ago
Given that F(x) = 5x^2-2x+7
tia_tia [17]
Whats the question for this question 
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3 years ago
How would I do this?
Georgia [21]
Work shown above! Answer would be 110 degrees!

3 0
3 years ago
What is the answer and why?
Sati [7]
A is the answer, because 3/5=.60 and 37.5/62.5=60
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3 years ago
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