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anygoal [31]
2 years ago
14

Rewrite the following expression in standard form by finding common denominator and collecting like terms

Mathematics
1 answer:
kotykmax [81]2 years ago
4 0
We have the expression \frac{2h}{3} - \frac{h}{9} + \frac{h-4}{6}; to find the common denominator we are going to decompose each one of the denominators into prime factors, and then we are going to multiply the common factors raised to the highest power and all the non common factors.

The denominators of our fractions are 3, 6, and 9. 3 is already a prime, so we are going to let that one alone. 6 on the other hand is divisible by tow, so it can be decomposed into tow prime factors 2 and 3: 6=(2)(3).
9 is divisible by 3, so it can also be decomposed into tow prime factors 3 and 3: 9=(3)(3)=3^{2}.
We have a common factor 3 in all our denominators, and among them the one raised to the highest power is 3^{2}. On the other hand we only have one non-common factor, 2. So, our common denominator will be:
common.denominator=(3^{2} )(2)=(9)(2)=18 

Now we know that the common denominator of our standard form fraction is 18, the only thing left is convert the denominators of each one of our fractions to 18 and simplify. To do that we are going to divide the common denominator by the denominator of each fraction, and then multiply the quotient by each one of the numerators:
\frac{2h}{3} - \frac{h}{9}+ \frac{h-4}{6}  = \frac{(6)(2h)-(2)(h)+3(h-4)}{18}
\frac{12h-2h+3h-12}{18}
\frac{13h-12}{18}

Answer: \frac{13h-12}{18}
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Write a linear equation in slope-intercept form using a slope and a given point. If a line has a slope of short dash 2 and goes
viva [34]
<h3>Answer: Choice A</h3>

y equals short dash 2 x minus 1

In other words, y = -2x - 1 is the equation

=========================================================

Explanation:

Slope = m = -2

Point on the line is (x,y) = (1, -3)

Use these three items to find the y intercept b

y = mx+b

-3 = -2*1 + b

-3 = -2 + b

-3+2 = b

-1 = b

b = -1

The slope intercept form of y = mx+b turns into y = -2x-1 after plugging m = -2 and b = -1

5 0
2 years ago
What is expanded form 12.38
Kruka [31]
Twelve and thirty- eight hundredths.
5 0
2 years ago
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The residence of a city voted on whether to raise property taxes the ratio of yes votes to know votes was 5 to 6 if there was 58
Akimi4 [234]
5/6:x/5844

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29220=6x
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10714 votes

Hope this helped :)
7 0
1 year ago
Naval intelligence reports that 4 enemy vessels in a fleet of 17 are carrying nuclear weapons. If 9 vessels are randomly targete
icang [17]

Answer:

0.7588 = 75.88% probability that more than 1 vessel transporting nuclear weapons was destroyed

Step-by-step explanation:

The vessels are destroyed without replacement, which means that the hypergeometric distribution is used to solve this question.

Hypergeometric distribution:

The probability of x successes is given by the following formula:

P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}

In which:

x is the number of successes.

N is the size of the population.

n is the size of the sample.

k is the total number of desired outcomes.

Combinations formula:

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)!}

In this question:

Fleet of 17 means that N = 17

4 are carrying nucleas weapons, which means that k = 4

9 are destroyed, which means that n = 9

What is the probability that more than 1 vessel transporting nuclear weapons was destroyed?

This is:

P(X > 1) = 1 - P(X \leq 1)

In which

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

So

P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}

P(X = 0) = h(0,17,9,4) = \frac{C_{4,0}*C_{13,9}}{C_{17,9}} = 0.0294

P(X = 1) = h(1,17,9,4) = \frac{C_{4,1}*C_{13,8}}{C_{17,9}} = 0.2118

Then

P(X \leq 1) = P(X = 0) + P(X = 1) = 0.0294 + 0.2118 = 0.2412

P(X > 1) = 1 - P(X \leq 1) = 1 - 0.2412 = 0.7588

0.7588 = 75.88% probability that more than 1 vessel transporting nuclear weapons was destroyed

8 0
2 years ago
Compare the decimals 16.30 and 16.3
pshichka [43]
16.30 and 16.3 equal. If you ever have a problem like that then you just add on a zero.

Example:
19.4500 = 19.45 Just add two zeros on the end
19.45 + two zeros = 1.4500
8 0
3 years ago
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