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Solnce55 [7]
2 years ago
13

These are the means and standard deviation for samples of building heights in two different cities. Select the two true statemen

ts.

Mathematics
1 answer:
SashulF [63]2 years ago
8 0

The two true statements are A. City A's heights are more spread out than B and C. City A has a lower average height than B

Explanation:

  • The mean for building heights in city A is 120 feet while in city B it is 200 feet. This means that if all the heights are summed with each other and this sum is divided by the number of buildings measured we get 120 feet in city A and get 200 feet in city B. So buildings in city B have a higher average height than the buildings in city A. So Option C is true.
  • City A has a standard deviation of 20 feet while city B's is 12 feet. This standard deviation means that the majority of buildings heights are within 20 feet in city A and 12 feet in city B. Combining both sets of data, we can say that most of city A's building heights are within 100 and 140 feet. For city B most of the building heights are within 188 feet and 212 feet. So City A has more spread than City B which is option A.

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wariber [46]

Check the picture below.

A)

well, we start off by making a table of values for the function, with a few "t" values, as you see in the picture, then graph those points to get the graph.

B)

at t = 0, h(0) = 98, and at t = 1, h(1) = 82, so it went from 98 to 82, for a difference of 16.

C)

at t = 1, h(1) = 82, and at t = 2 h(2) = 34, so it went from 82 to 34, for a difference of 48.

does it fall the same distance on both intervals? well, they're different, so nope.

6 0
3 years ago
Sandra bought a tube of toothpaste for $1.89, shampoo for $3.19 and a jar of peanuts for $2.29 from the local supermarket. Using
uranmaximum [27]
To find the total cost, you need to add these numbers together

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rounding 7.37 will make it 7.

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5 0
3 years ago
Read 2 more answers
Five more than four times a number
Tasya [4]

Answer: 4x +5

Step-by-step explanation:

8 0
3 years ago
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The height H metres of a ball projected upwards t seconds after being projected is given by H=64t - 16t². Find it's initial velo
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Answer:

initial velocity = 64 m/s

Step-by-step explanation:

Differentiate H = 64t - 16t² to find an equation for velocity:

Velocity = \frac{dH}{dt} = 64 - 32t

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4 0
2 years ago
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garik1379 [7]
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3 0
3 years ago
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