1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
stellarik [79]
3 years ago
7

Please help me answer this question its urgent

Mathematics
1 answer:
yarga [219]3 years ago
6 0

Answer:

Step-by-step explanation:

1). \frac{2}{3}n-\frac{3}{4}n+\frac{1}{6}n+2\frac{2}{9}n

= \frac{2}{3}n-\frac{3}{4}n+\frac{1}{6}n+(2+\frac{2}{9})n

= (\frac{2}{3}-\frac{3}{4}+\frac{1}{6})n+(2+\frac{2}{9})n

= (\frac{8}{12}-\frac{9}{12}+\frac{2}{12})n+(2+\frac{2}{9})n

= \frac{(8-9+2)}{12}n+(2+\frac{2}{9})n

= \frac{1}{12}n+(2+\frac{2}{9})n

= (\frac{1}{12}+2+\frac{2}{9})n

= (\frac{3}{36}+\frac{72}{36}+\frac{8}{36})n

= \frac{83}{36}n

= 2\frac{11}{36}n

2). \frac{2}{5}g-\frac{1}{6}-g+\frac{3}{10}g-\frac{4}{5}

= (\frac{2}{5}-1+\frac{3}{10})g-(\frac{1}{6}+\frac{4}{5})

= (\frac{4}{10}-\frac{10}{10}+\frac{3}{10})g-(\frac{5}{30}+ \frac{24}{30})

= (\frac{4-10+3}{10})g-(\frac{5+24}{30})

= \frac{-3}{10}g-\frac{29}{30}

= -\frac{3}{10}g-\frac{29}{30}

3). i+6i-\frac{3}{7}i+\frac{1}{3}h+\frac{1}{2}i-h+\frac{1}{4}h

= 7i-\frac{3}{7}i+\frac{1}{2}i+\frac{1}{3}h-h+\frac{1}{4}h

= (7-\frac{3}{7}+\frac{1}{2})i+(\frac{1}{3}-1+\frac{1}{4})h

= (\frac{98}{14} -\frac{6}{14}+\frac{7}{14})i+(\frac{4}{12}-\frac{12}{12}+\frac{3}{12})h

= (\frac{98-6+7}{14})i+(\frac{4-12+3}{12})h

= \frac{99}{14}i-\frac{5}{12}h

You might be interested in
How do I solve this:<br><br>180-(2x-40)<br><br>its a geometry problem.
Anastasy [175]

Answer:

180-1(2x-40)

180-1(2x)+(-1)(-40)

180+−2x+40

Combine Like Terms:

180+−2x+40=(−2x)+(180+40)

-2x+220


Step-by-step explanation:


8 0
3 years ago
Which expression is equivalent to -28 x 2 + 35 x ?
IrinaVladis [17]

Answer:

35+28=31

Step-by-step explanation:

7 0
3 years ago
How do I write the sum of two numbers as the product of their GCF and another sum
Delicious77 [7]
Let's assume we were given 2 numbers: 15 and 30. Their sum is:
15+30 = 45
We want to express it as the product of GCF and another sum.
15 is divisible by: 1, 3, 5, 15
30 is divisible by: 1, 2, 3, 5, 6, 10, 15, 30
The greatest number that appears in 2 series is 15.
\frac{15}{15} = 1
\frac{30}{15} = 2
In this case sum of two numbers can always be written as:
15+30 = (15\cdot 1) + (15\cdot 2) = 15\cdot (1+2) = 15\cdot 3 = 45

8 0
3 years ago
Read 2 more answers
Suppose a particular type of cancer has a 0.9% incidence rate. Let D be the event that a person has this type of cancer, therefo
natita [175]

Answer:

There is a 12.13% probability that the person actually does have cancer.

Step-by-step explanation:

We have these following probabilities.

A 0.9% probability of a person having cancer

A 99.1% probability of a person not having cancer.

If a person has cancer, she has a 91% probability of being diagnosticated.

If a person does not have cancer, she has a 6% probability of being diagnosticated.

The question can be formulated as the following problem:

What is the probability of B happening, knowing that A has happened.

It can be calculated by the following formula

P = \frac{P(B).P(A/B)}{P(A)}

Where P(B) is the probability of B happening, P(A/B) is the probability of A happening knowing that B happened and P(A) is the probability of A happening.

In this problem we have the following question

What is the probability that the person has cancer, given that she was diagnosticated?

So

P(B) is the probability of the person having cancer, so P(B) = 0.009

P(A/B) is the probability that the person being diagnosticated, given that she has cancer. So P(A/B) = 0.91

P(A) is the probability of the person being diagnosticated. If she has cancer, there is a 91% probability that she was diagnosticard. There is also a 6% probability of a person without cancer being diagnosticated. So

P(A) = 0.009*0.91 + 0.06*0.991 = 0.06765

What is the probability that the person actually does have cancer?

P = \frac{P(B).P(A/B)}{P(A)} = \frac{0.91*0.009}{0.0675} = 0.1213

There is a 12.13% probability that the person actually does have cancer.

3 0
3 years ago
You win a prize and are offered two choices. Which of the choices could be represented by a linear equation?
brilliants [131]

Answer:

choice b because it is constantly going up the same amount.

6 0
3 years ago
Read 2 more answers
Other questions:
  • An electronic store makes a profit of $15 for every fitness tracker sold. The store wants to find how many fitness trackers they
    13·1 answer
  • If 14 is decreased by 3 times a number the result is -4​
    5·1 answer
  • 2 miles and 20 yards is equal to how many yards?
    7·2 answers
  • I need help with number 7!!!☹️
    5·1 answer
  • Simplify square root 9 = 9 1/2
    13·1 answer
  • What is the length of a rectangle whose perimeter is 140 ft if its width-to-length is 2 : 5
    14·1 answer
  • HELP!! ASAP FOR BRAINLIEST!!!
    12·1 answer
  • The temperature overnight in Sitka, Alaska was 12 below zero. How should this be written?
    6·1 answer
  • An item is regularly priced at $90. It is on sale for 40% off the regular price. How much (in dollars) is discounted from the re
    9·1 answer
  • 10 freshmen, 9 sophomores, 8 juniors, and 9 seniors are eligible to be on a committee.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!