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Schach [20]
4 years ago
15

Simplify the expression

Mathematics
1 answer:
bearhunter [10]4 years ago
7 0
First we want to simplify the denominator
\frac{1}{4} - \frac{5}{2}

to subtract, we convert 5/2 to have a denominator of 4
\frac{1}{4} - \frac{10}{4}
- \frac{9}{4}

now we can put this back into the original problem
\frac{4}{ - \frac{9}{4} }
this equation can also be read as
4 \div - \frac{9}{4}

when dividing, we flip the right side and switch to multiplication
\frac{4}{1} \times - \frac{4}{9} = - \frac{16}{9}

answer = - \frac{16}{9}
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One person is selected at random from a class of 20 males and 13 females. Find the odds against selecting a male and a female
spin [16.1K]

Answer:

Odds for male= 1.538

Odds for female =  0.65

Step-by-step explanation:

The question is asking for odds, not a probability. A probability shows how much the chance for the event to happen, so it can be expressed as a percentage. Odds show how the event more likely to happen compared to the chance it did not happen. If an event has a 90% probability, the odds will be 90:10= 9

In this case, the odds of selecting a male will be:  

number of male : number of female= 20:13 = 1.538

The odds of selecting a female will be

number of female : number of male = 13/20 = 0.65

7 0
3 years ago
What are the steps for long division?
diamong [38]
This is what I learned:

D = Divide
M = Multiply
S = Subtract
B = Bring down
C= Check

D= Dad
M= Mom
S= Sister
B= Brother
C= Cousin

Hope this helped you! :)
8 0
4 years ago
Blain exchanges $100 for yen before going to Japan. If each U.S. dollar is worth 88.353 yen, how many yen should Blain receive?
Tcecarenko [31]
To figure out how many yen all ya have to do is multiply 88.353 by 100 to get the answer 8835.3 yen.
5 0
3 years ago
Read 2 more answers
How much is the percent change if the price was $75 and now it is $300?
ale4655 [162]

Answer:

300 percent change

Step-by-step explanation:

300 is 400 percent of 75.(75x4 is 300.) Therefore, the percent change is

400 - 100 = 300.

6 0
3 years ago
What is the sum of numbers as a product of their GCF 45+60
Eduardwww [97]
Find the prime factorization

45=3*3*5
60=2*2*3*5
GCF=3*5=15

45=3*15
60=4*15

remember
ab+ac=a(b+c) so
45+60=15(3)+15(4)=15(3+4)=15(7)=105
5 0
3 years ago
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