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3 years ago

SNOG PLEASE HELP! (x-1)(y+8)

Mathematics

2 answers:

4vir4ik [10]3 years ago

6 0

Answer:

$xy+8x-y-8$

Step-by-step explanation:

=> (x-1)(y+8)

Using FOIL

=> $xy+8x-y-8$

Leya [2.2K]3 years ago

4 0

Answer:

Using FOIL we get:

xy + 8x - y - 8

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Find the distance between the points (0, – 10) and ( – 9,2). Write your answer as a whole number or a fully simplified radical e

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Answer:

Step-by-step explanation:

(0 - 9)^2 + (- 10 - 2)^2

(-9)^2 + (-12)^2

81 + 144

sq rt of 225

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3 years ago

an ivy plant was 19 inches long. two years later it was 33 inches long. what was the percent increase to the nearest hundredth o

lapo4ka [179]

Answer:

73.68%

Step-by-step explanation:

To find the amount of increase subtract 33-19 to get 14.

The percent increase is the amount of increase/initial length * 100

So 14/19*100 = 73.684...

Rounding to the nearest hundredth = 73.68%

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3 years ago

In a quiz competition, the host asked a question and provided three possible answers. What is the probability that the answer ch

murzikaleks [220]

Answer:

2/3 probability that the answer choice which rohit selects for question is wrong.

Step-by-step explanation:

Completing the question :- what is probability that the answer choice which rohit selects for question is wrong.

Answer :

Since there are 3 possible options provided out of which 1 is correct. So probability of correct answer is 1/3. probability of incorrect answer is 2/3.

So, there is 2/3 probability that the answer choice which rohit selects for question is wrong.

4 0

1 year ago

Help is really needed!

RideAnS [48]

Answer:

The First table is going by 6 on the top, the bottom is going by 1.5.

1.5 3 4.5 6

The Second table is going by multiplying by 2 on the top, the bottom is doing the same thing(from least to greatest).

5,640 2,820 1,140 570

The cost per pound of apples on sale is $1.50.

3÷2= 1.50

You can buy 12 pounds of apples for $18.00.

18.00÷1.5= 12

Since 1 pound=16 ounces, so there are about 3 apples in each pound.

16÷5= 3.2

You can buy approximately 36 apples with $18.00.

12×3= 36

8 0

3 years ago

A real estate agent has 1212 properties that she shows. She feels that there is a 50P% chance of selling any one property during

forsale [732]

Answer:

0.6127 = 61.27% probability of selling no more than 6 properties in one week.

Step-by-step explanation:

For each property, there are only two possible outcomes. Either it is sold, or it is not. The probability of a property being sold is independent of any other property. This means that the binomial probability distribution is used to solve this question.

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 combinations 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.

12 properties

This means that $n = 12$

She feels that there is a 50% chance of selling any one property during a week.

This means that $p = 0.5$

Compute the probability of selling no more than 6 properties in one week.

This is:

$P(X \leq 6) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3) + P(X = 4) + P(X = 5) + P(X = 6)$

In which

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

$P(X = 0) = C_{12,0}.(0.5)^{0}.(0.5)^{12} = 0.0002$

$P(X = 1) = C_{12,1}.(0.5)^{1}.(0.5)^{11} = 0.0029$

$P(X = 2) = C_{12,2}.(0.5)^{2}.(0.5)^{10} = 0.0161$

$P(X = 3) = C_{12,3}.(0.5)^{3}.(0.5)^{9} = 0.0537$

$P(X = 4) = C_{12,4}.(0.5)^{4}.(0.5)^{8} = 0.1208$

$P(X = 5) = C_{12,5}.(0.5)^{5}.(0.5)^{7} = 0.1934$

$P(X = 6) = C_{12,6}.(0.5)^{6}.(0.5)^{6} = 0.2256$

$P(X \leq 6) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3) + P(X = 4) + P(X = 5) + P(X = 6) = 0.0002 + 0.0029 + 0.0161 + 0.0537 + 0.1208 + 0.1934 + 0.2256 = 0.6127$

0.6127 = 61.27% probability of selling no more than 6 properties in one week.

6 0

2 years ago