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3 years ago

What must be true of two rational expressions before they can be added?

Mathematics

2 answers:

cricket20 [7]3 years ago

8 0

They must have common denominators

klio [65]3 years ago

3 0

Answer:

D They must have common denominators.

Step-by-step explanation:

Rational expressions are fractions formed by two polynomials, one in the numerator and other in the denominator.

The numerator is the polynomial that is at the top of the fraction and denominator is the polynomial that is at the bottom of the fraction.

To add any fractions it is necessary that they have the same denominator, this applies to rational expressions, to add them it is required that they have the same polynomial in the denominator.

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Solve the equation.<br> 10= p/10 <br> P=?

Lunna [17]

Answer:

p = 100

Step-by-step explanation:

10 = p/10

multiply both sides of the equation by 10 (the inverse of 1/10, which is 1p/10)

p = 100

please let me know if you have questions about this.

6 0

2 years ago

In a shipment of 71 vials, only 13 do not have hairline cracks. If you randomly select 2 vials from the shipment, what is the pr

yanalaym [24]

Answer:

0.0313

Step-by-step explanation:

Given that in the shipment of 71 vials, only 13 do not have hairline cracks

Probability of not having a hairline cracks = $\frac{13}{71}$

If you randomly select 2 vials from the shipment

(Probability of not having a hairline cracks)' = $\frac{13-1}{71-1}$ = $\frac{12}{70}$

what is the probability that none of the 2 vials have hairline cracks.

i.e $(\frac{13}{71}) * (\frac{12}{70})$

= 0.183 × 0.171

= 0.0313

Hence, the probability that none of the 2 vials have hairline cracks = 0.0313

6 0

3 years ago

Multiple 3/4 times 16/9

nataly862011 [7]

3/4 times 16/9 is equal to 1 1/3.

7 0

2 years ago

Read 2 more answers

Write an equation of the line in either point slope or slope intercept form that passes through the points (3,5) and (2,-2). (Hi

Jobisdone [24]

Answer:

Step-by-step explanation:

slope= y2-y1 / x2-x1

= -2-5 / 2-3

= -7 / -1

= 1

6 0

2 years ago

221+ X equals 386 right and solve an addition equation to find how many trading cards are Levi’s

vova2212 [387]

Answer:

165 cards left

Step-by-step explanation:

x + 221 = 386

-221 from both sides

x = 165

5 0

3 years ago