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cluponka [151]
3 years ago
9

A building 86.31 feet tall has a shadow that is 89.19 feet long

Mathematics
1 answer:
zmey [24]3 years ago
3 0

Answer:


Step-by-step explanation:

what r u tyring to find there is no question,

answer this and i really can help.

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The price of patatoes first increased by 10% and then fell by 8%. Find the net percentage change in the price of patatoes.
timofeeve [1]

Answer:

10%-8%=2

2/8=0.25

0.25×100=25

The net percentage is 25%

6 0
3 years ago
The Copy Shop has made 20 copies of a document for you. Since the defective rate is 0.1, you think there may be some defective c
Pepsi [2]

Answer:

Binomial

There is a 34.87% probability that you will encounter neither of the defective copies among the 10 you examine.

Step-by-step explanation:

For each copy of the document, there are only two possible outcomes. Either it is defective, or it is not. This means that we can solve this problem using the binomial probability distribution.

Binomial probability distribution:

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinatios of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

In this problem

Of the 20 copies, 2 are defective, so p = \frac{2}{20} = 0.1.

What is the probability that you will encounter neither of the defective copies among the 10 you examine?

This is P(X = 0) when n = 10.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 0) = C_{10,0}.(0.1)^{0}.(0.9)^{10} = 0.3487

There is a 34.87% probability that you will encounter neither of the defective copies among the 10 you examine.

8 0
3 years ago
Which situation is most likely to have a constant rate of change?
Vera_Pavlovna [14]

Answer:

b

Step-by-step explanation:

each brick is the exact same size.

(Also can I please have brianliest? I need it to level up!!!)

3 0
3 years ago
What is the equation of the line that contains point ( -2,1) and has a slope of 4
marshall27 [118]

Answer:

y=4x+7

Step-by-step explanation:

it's in the picture

please mark as brainliest

6 0
3 years ago
What is 3 to the sixth power times 3 there is a picture please help worth 12 pts.!!!!!
Diano4ka-milaya [45]

Answer:

2187 ( 3 to the 7th)

Step-by-step explanation:

3 to the 6th= 729

729 x 3 = 2187

6 0
3 years ago
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