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k0ka [10]
3 years ago
12

A 24 foot long tree casts a shadow that is 9 feet long at the same time a nearby building casts a shadow of 45 feet long how tal

l is the building
Mathematics
1 answer:
qwelly [4]3 years ago
7 0

Answer:

i think the answer you're looking for is 60

Step-by-step explanation:

24-9=15

45+15=60

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How are percent error and percent change similar
mihalych1998 [28]
Percent Change = New Value − Old Value|Old Value| × 100%

Example: There were 200 customers yesterday, and 240 today:

240 − 200|200|× 100% = 40200 × 100% = 20%

A 20% increase.

 

Percent Error = |Approximate Value − Exact Value||Exact Value| × 100%

Example: I thought 70 people would turn up to the concert, but in fact 80 did!

|70 − 80||80| × 100% = 1080 × 100% = 12.5%

I was in error by 12.5%

(Without using the absolute value, the error is −12.5%, meaning I under-estimated the value)

The difference between the two is that one states factual calculations and the other is a theoretical guess
5 0
3 years ago
Evaluate 2^−1 + 2^−1.
Diano4ka-milaya [45]

Answer:

1

Step-by-step explanation:

2^−1 + 2^−1

2x2^-1

1

4 0
3 years ago
a school sells boxes of cookies each year for a charity fund .the data set shows the number of boxes the 10 families living on w
Thepotemich [5.8K]
0, 1, 1, 2, 2, 2, 2, 3, 3, 5

minimum: 0
maximum: 5
mean: 2.1
median: 2
mode: 2

I think the data have zero skew. Its mean, median, and mode are based on 2. It shows symmetry.
8 0
3 years ago
Find the value of y:<br><br> 8y(4y+24)
Ray Of Light [21]

Answer:

32y² + 192y

Step-by-step explanation:

First, we need to distribute 8y. This gets us 32y²+192y. I do not believe you can simplify that. I hope this helps!

3 0
3 years ago
Read 2 more answers
Delta Airlines quotes a flight time of 2 hours, 5 minutes for its flights from Cincinnati toTampa. Suppose we believe that actua
siniylev [52]

Answer:

a) The graph of the probability density function for flight time is shown below.

b) 1/2

c) 0

d) 130 minutes

Step-by-step explanation:

Let's deal with the flight times in minutes instead of hours, and let T be the random variable that represents the flight time. T is uniformly distributed between 120 minutes and 140 minutes. The probability density function for T is given by

f(t)=\frac{1}{140-120}=\frac{1}{20} for t in [120, 140]

a) The graph of the probability density function for flight time is shown below.

Delta Airlines quotes a flight time of 125 minutes for its flights from Cincinnati to Tampa.

b) The probability that the flight will be no more than 5 minutes late is given by

P(T \leq 125 + 5) = P(T \leq 130) = \int\limits_{120}^{130}\frac{1}{20}dt = \frac{1}{20}(130-120)= \frac{1}{20}(10) = \frac{1}{2}  

c) The probability that the flight will be more than 10 minutes late is given by

P(T \geq 125 + 10) = P(T \geq 135) = 0 because the probability density function is zero for t outside of [120, 140]

d) The expected flight time is given by E(T) = \frac{120+140}{2} = \frac{260}{2} = 130 minutes

8 0
3 years ago
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