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aliina [53]
4 years ago
5

Which of the following is equal to the rational expression when X not equal -4 or 3?

Mathematics
1 answer:
guajiro [1.7K]4 years ago
7 0

Answer:

A

Step-by-step explanation:

Given

\frac{x^2-4x+3}{x^2+x-12}

Factorise the numerator and denominator

x² - 4x + 3 = (x - 1)(x - 3)

x² + x - 12 = (x + 4)(x - 3), thus

= \frac{(x-1)(x-3)}{(x+4)(x-3)} ← cancel (x - 3) on numerator/denominator

= \frac{x-1}{x+4} → A

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In a genetics experiment on​ peas, one sample of offspring contained 450 green peas and 371 yellow peas. Based on those​ results
laiz [17]

Answer:

P(G) = 0.55

the probability of getting an offspring pea that is green. Is 0.55.

Is the result reasonably close to the value of three fourths that was​ expected?

No

Expected P(G)= three fourths = 3/4 = 0.75

Estimated P(G) = 0.55

Estimated P(G) is not reasonably close to 0.75

Step-by-step explanation:

Given;

Number of green peas offspring

G = 450

Number of yellow peas offspring

Y = 371

Total number of peas offspring

T = 450+371 = 821

the probability of getting an offspring pea that is green is;

P(G) = Number of green peas offspring/Total number of peas offspring

P(G) = G/T

Substituting the values;

P(G) = 450/821

P(G) = 0.548112058465

P(G) = 0.55

the probability of getting an offspring pea that is green. Is 0.55.

Is the result reasonably close to the value of three fourths that was​ expected?

No

Expected P(G)= three fourths = 3/4 = 0.75

Estimated P(G) = 0.55

Estimated P(G) is not reasonably close to 0.75

3 0
3 years ago
Consider the perfect square trinomial identity:
denis-greek [22]

Answer:

a = x

b = 5

Step-by-step explanation:

5 0
4 years ago
I need the reasons for this
rusak2 [61]

Answer:

Reflexive Property

ASA

CPCTC

Step-by-step explanation:

4 0
3 years ago
If 1/3 is 0.333 then 3/3 is 0.999 that means 1 doesnt actually equal 1​
sergejj [24]

Answer:

Correct

Step-by-step explanation:

When you type 1/3 into a calculator it should give you something along the lines of .333333334. If you continue to round, eventually you will get 1.

7 0
3 years ago
Read 2 more answers
Is the answer B correct?
VashaNatasha [74]
If you do the elimination process, here it is.

- A : Too small

+ B : I think so

- C : I little too big

- D : Way too big
7 0
4 years ago
Read 2 more answers
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