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marshall27 [118]
3 years ago
7

Use the substitution method to solve the system of equation.choose the correct ordered pair.

Mathematics
1 answer:
Reika [66]3 years ago
6 0

Answer:

x=8 and y=2

Step-by-step explanation:


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Which two numbers multiply to 60 and add to -2?
USPshnik [31]
xy=60\\
x+y=-2\\\\
xy=60\\
x=-y-2\\\\
(-y-2)y=60\\
-y^2-2y-60=0\\
y^2+2y+60=0\\
y^2+2y+1+59=0\\
(y+1)^2=-59


There are no such numbers in real numbers.
Do you perhaps want a solution in complex numbers?
8 0
2 years ago
How do you subtract 7.6 from 20.39
larisa [96]
20.39 -7.6 = 12.79
8 0
3 years ago
Read 2 more answers
After being rejected for employment, Kim Kelly learns that the Bellevue Credit Company has hired only three women among the last
mixer [17]

Answer:

0.00071 = 0.71% probability of getting three or fewer women when 21 people are hired. This probability, which is very small, supports the charge of gender discrimination.

Step-by-step explanation:

For each employee hired, the are only two possible outcomes. Either it is a man, or it is a woman. The probability of a person hired being a man or a woman is independent of any other person. This means that we use the binomial probability distribution 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.

21 new employees.

This means that n = 21

She also learns that the pool of applicants is very large, with an approximately equal number of qualified men as qualified women.

This means that p = 0.5

Help her address the charge of gender discrimination by finding the probability of getting three or fewer women when 21 people are hired.

This is

P(X \leq 3) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3)

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

P(X = 0) = C_{21,0}.(0.5)^{0}.(0.5)^{21} \approx 0

P(X = 1) = C_{21,1}.(0.5)^{1}.(0.5)^{20} = 0.00001

P(X = 2) = C_{21,2}.(0.5)^{2}.(0.5)^{19} = 0.0001

P(X = 3) = C_{21,3}.(0.5)^{3}.(0.5)^{18} = 0.0006

P(X \leq 3) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3) = 0 + 0.00001 + 0.0001 + 0.0006 = 0.00071

0.00071 = 0.71% probability of getting three or fewer women when 21 people are hired. This probability, which is very small, supports the charge of gender discrimination.

8 0
3 years ago
To find the quotient of 4 ÷ <br> 1<br> 8<br> , count the number of
Ivanshal [37]

Answer:

the answer is 32

Step-by-step explanation:

6 0
2 years ago
Antonio earned the following points during a game:4.26 points, -3 and one half points, and 7 over 10 points. What is the final s
KiRa [710]

1.46 points put them all in to decimals so 4.26-3.5= .76 + .7 is 1.46

3 0
3 years ago
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