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romanna [79]
2 years ago
7

The bar graph shows the numbers of reserved campsites at a campground for one week. What percent of the reservations were for Fr

iday or Saturday? Write the percent as a mixed number in simplest form.

Mathematics
1 answer:
natta225 [31]2 years ago
8 0

Answer:

66\frac{2}{3} \%

Step-by-step explanation:

See the attached bar graph.

The bar graph shows the numbers of reserved campsites at a campground for one week.

So, on Friday and Saturday, the total number of reserved campsites will be (26 + 30) = 56.

Now, the total number of reserved campsites from Monday to Sunday is (5 + 3 + 4 + 7 + 26 + 30 + 9) = 84.

Therefore, the percent of the reservations on Friday and Saturday will be

\frac{56}{84} \times 100\% = \frac{200}{3}\% = 66\frac{2}{3}\%. (Answer)

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The fraction of squares shaded to total squares is 70/100  or 7/10
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2 years ago
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Printed circuit cards are placed in a functional test after being populated with semiconductor chips. A lot contains 140 cards,
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Answer:

a) 0.9644 or 96.44%

b) 0.5429 or 54.29%

Step-by-step explanation:

a) The probability that at least 1 defective card is in the sample P(A) = 1 - probability that no defective card is in the sample P(N)

P(A) = 1 - P(N) .....1

Given;

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Number selected = 20

Total number of defective cards = 20

Total number of non defective cards = 140-20 = 120

P(N) = Number of possible selections of 20 non defective cards ÷ Number of possible selections of 20 cards from all the cards.

P(N) = 120C20/140C20 = 0.0356

From equation 1

P(A) = 1 - 0.0356

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b) Using the same method as a) above

P(A) = 1 - P(N) .....1

Given;

Total number of cards = 140

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From equation 1

P(A) = 1 - 0.4571

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8 0
2 years ago
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Answer:

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The only Pythagorean identities are:

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3. \ 1+Cot^2\theta=Csc^2\theta

4. \ Sin^2\theta=1-Cos^2\theta\\  \ \ Cos^2\theta=1-Sin^2\theta

 

Therefore,Cot^2\theta-Csc^2\theta=-1 is correct as it's one of the pythagorean identities.

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