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n200080 [17]
2 years ago
4

The bar graph shows the number of dinner reservations at a restaurant for one week. What percent of the reservations were for Fr

iday or Saturday?
Monday 15
Tuesday 5
Wednesday 10
Thursday 25
Friday 40
Saturday 30
Sunday 35
Mathematics
1 answer:
Maksim231197 [3]2 years ago
7 0
Hey there!

You can answer this question by adding up all of the reservations and finding the percentage of reservations made on Friday or Saturday out of that total. First, find the total, then, add up the reservations for Friday and Saturday. 

15 + 5 + 10 + 25 + 40 + 30 + 35 = 160

40 + 30 = 70

Now, divide the reservation amount for Friday and Saturday by the total amount and multiply this decimal by 100 to get your percentage. 

70 ÷ 160 = 0.4375

0.4375 × 100 = 43.75%

Hope this helped you out! :-)
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2 years ago
Rayna is building a tapered staircase using wooden boards. The bottom stair is 3 ft wide, and the top stair is 2 ft wide. Each s
Oksana_A [137]

Answer:

Total length of wooden boards = 10 feet

As 10 is a whole number, it can't be written as an improper fraction.

Step-by-step explanation:

First we need to convert the 4 in measurement to foot.

The conversion rate is: 12 inches = 1 foot.

So we have that 4 inches is equal to 1/3 feet.

If each stair is (1/3) feet shorter than the one below, we have that:

Bottom stair = 3 feet

Second stair = 2.666 feet

Third stair = 2.333 feet

Top stair = 2 feet

The staircase have 4 stairs:

3 feet, 2.666 feet, 2.333 feet and 2 feet

Now, to know the total length of wooden boards, we just need to sum the length of each stair:

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2 years ago
The photo shows a small coin. The scale from the actual coin to the photo is
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8mm to 2cm is the same as 8mm to 20mm

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2 years ago
It has been estimated that only about 30% of California residents have adequate earthquake supplies. Suppose we are interested i
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Answer:

Step-by-step explanation:

We are given that 30% of California residents have adequate earthquake supplies.

a) Ramon variable X denotes the number of the california residents that have adequate earthquake insurance

B) x can take value 1 ,2 ,3 ......

C)The distribution of random variable is geometric distribution with parameter p=0.3

The pmf of geometric distribution is

P(X=x)=0.3(1-0.3)^{x-1} , x=1,2,3...

D)P(X=1) or P(X=2)=P(X=1)+P(X=2)

P(X=1) or P(X=2)=0.3(1-0.3)^{1-1}+0.3(1-0.3)^{2-1}=0.51

E)

P(X \geq 3)=1-P(X

F)

E(X)=\frac{1}{p}

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p = 1-0.3 = 0.7

E(X)=\frac{1}{0.7}=1.42

G)E(X)=\frac{1}{q}=\frac{1}{0.3}=3.33

8 0
2 years ago
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