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3 years ago

Explain the steps involved in adding two rational expressions.

2 answers:

8 0

1. If the denominators are the same, simply add the numerators and place the answer over the common denominator. Reduce the final answer if necessary.

2. if the denominators are different, then find the least common denominator and rewrite the rational expressions as equivalent rational expressions with the least common denominator. Then add the numerators and place the answer over the common denominator.. Reduce your final answer if necessary.

Ulleksa [173]3 years ago

3 0

Factor the denominators of each expression to find the LCD.

Rename each expression, if needed, by multiplying by a form of one to get the LCD.

Add the numerators, keeping the denominators the same.

If possible, simplify by factoring the numerator and dividing out common factors from both the numerator and denominator.

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To test whether an integer, $n$, is prime, it is enough to be sure that none of the primes less than or equal to the square root

IrinaK [193]

Answer:

the largest divisor is less than the square root of that number

Step-by-step explanation:

Pick any number between 900 and 950 . For example I choose 937 . Now taking the square root of 937 would give 30.61

So divide 937 with all the primes less than 30.61

937/2, 937/3, 937/5,...................937/29

29 would be the largest divisor which is less than the square root of 937 .

29< 30.61

But if you check 937 does not divide wholly with any of the primes hence it is a prime number itself.

If any number such 925 is chosen and it gets divided wholly by another prime like 5

925 /5= 185 so it is not a prime number

5 0

3 years ago

Please answer I need this AS SOON AS POSSIBLE A

lana [24]

Answer:

When using desmos I got y=x^{2}-4x+3 (the 2 is an exponent btw) I inserted a picture. I hope this helped

Step-by-step explanation:

3 0

3 years ago

George drove 240 miles to his grandmother's house. The graph below shows the relationship between the distance he traveled and t

Advocard [28]

Answer:

There is no graph but I can infer that if time is on the x axis it would be C and if distance is on the x axis it would be B

Step-by-step explanation:

5 0

3 years ago

1. What is the solution of n^2-49=0?

zepelin [54]

Answer:

it would be d for #1 because it has no solution for the question

7 0

3 years ago

A study shows that 78% of adults need eye correction. If 12 adults are randomly selected, find the probability that atleast 11 o

sergejj [24]

Answer: 0.2224

Step-by-step explanation:

Given: The proportion of adults need eye correction: p= 78%=0.78

Let X be a binomial variable that represents the number of adults who need eye correction.

Sample size of adults: n= 12

Binomial ditsribution formula:

$P(X=x)=^nC_xp^x(1-p)^{n-x}$

Now, the probability that at least 11 of them need correction for their eyesight will be

$P(X\geq11)=P(X=11)+P(X=12)\\\\=^{12}C_{11}(0.78)^{11}(1-0.78)^{1}+^{12}C_{12}(0.78)^{12}(1-0.78)^{0}\\\\=(12)(0.78)^{11}(0.22)+(1)(0.78)^{12}(1)\\\\\approx0.1716503+0.05071486=0.22236516\approx0.2224$

Hence, the required probability = 0.2224

7 0

3 years ago