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3 years ago

Evaluate: the product of 4 and 7*

Mathematics

1 answer:

weeeeeb [17]3 years ago

4 0

Answer:

Step-by-step explanation:

4 x 7 = 28

Hope this helps you :)

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A local petting zoo had a total of 98,464 visitors last year. The zoo was open every day except thanksgiving, Christmas, and New

riadik2000 [5.3K]

Answer:

The average number of visitors per day is 272.

Step-by-step explanation:

Total number of visitors in the zoo in a year = 98,464

Now,we know that 1 YEAR = 365 DAYS

Also, the zoo was closed on thanksgiving, Christmas, and New Year's Eve

So, the Number of days zoo was open = Total Days in year - 3 days

= 365 - 3 = 362 days

⇒Number of visitors in 362 days = 98,464

So, $\textrm{Number of visitor per day} = \frac{\textrm{Total number of visitors in 352 days}}{\textrm{352 days}}$

$= \frac{98,464}{362} = 272$

or, the number of people visiting per day is 272.

Hence, the average number of visitors per day is 272.

8 0

2 years ago

The Philadelphia Museum of Art’s triangular pediment has the measurements shown in the diagram. What is the area?

kherson [118]

Answer:

420 ft^2

Step-by-step explanation:

12x70=840

840/2=420

5 0

2 years ago

A student group claims that first-year students at a university must study 2.5 hours (150 minutes) per night during the school w

AlekseyPX

Answer:

We have strong evidence that on average, students study less than 150 minutes per night during the school week

Step-by-step explanation:

Normal distribution:

mean μ₀ = 150

Sample:

Sample size n = 272

Sample mean x = 141

Sample standard deviation s = 66

The standard error of the sample mean SE = σ /√n

SE = 66/√272

SE = 66 / 16,49

SE = 4

Test Hypothesis:

Null hypothesis H₀ x = μ₀

Alternative hypothesis Hₐ x < μ₀

z(s) test statistics is:

z(s) = ( x - μ₀ ) / s/√n

z(s) = - 9 /4

z(s) = - 2,25

p-value for that z(s) p-value = 0,0122

Then for α = 0,05 p-value < 0,05

We are in the rejection region we need to reject H₀

7 0

3 years ago

John gave 23/25 of an orange to his best friend. What

Zarrin [17]

Answer:

80%

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

The price of an item has risen to $217 today. Yesterday it was $140. Find the percentage increase.

tiny-mole [99]

Answer: $77

Step-by-step explanation: 77 is the correct answer because the price increased by 77 because 77 is the difference between the two, and how i got 77 was to subtract 140 ( the earlier price) from 217 ( the price that it changed to), i hope you found this helpful...

5 0

2 years ago