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dybincka [34]
4 years ago
10

Which of the following is a factor of 5x3 − 135? 135 x + 3 x2 + 3x + 9 x - 5

Mathematics
2 answers:
cluponka [151]4 years ago
7 0

Answer:

The answer to your question is:

Step-by-step explanation: The third one is a factor

Factor

                                        5x³ − 135    

Find the prime factors of 135

             135   3

               45   3

                15    3                   Then 135 = 3³ x 5

                 5     5

                  1

                                   5x³  - 5(3)³

Factor   5    

                   5[  x³  - (3)³]

                   5 [  (x  - 3)(x² + 3x + 9)]

ivann1987 [24]4 years ago
4 0

Answer:

5 [  (x  - 3)(x² + 3x + 9)]

Step-by-step explanation:

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If r(x) = 3x - 1 and s(x) = 2x + 1, which expression is equivalent to (r/s)(6)?
Nana76 [90]

Answer:

Step-by-step explanation:

(r/s)(x) is the quotien of r(x) = 3x - 1 and s(x) = 2x + 1:

  r            3x - 1

(-----)(x) = ----------

  s            2x + 1

8 0
3 years ago
A screening test for a newly discovered disease was evaluated in order to determine how well the test performs. Investigators ad
saw5 [17]

Answer:

B. 71.43%

Step-by-step explanation:

The sensitivity is the probability that a test will indicate 'disease' among those with the disease, that is, the test has a positive results:

In this problem, we have that:

150 people with the disease tested positive and 60 tested negative. So the sensitivity is:

S = 100*\frac{150}{210} = 71.43

The correct answer is:

B. 71.43%

5 0
3 years ago
Which polynomial represents the difference below 5x^2+9x+3-(x^2-3x)?
neonofarm [45]
5x^2+9x+3-(x^2-3x)=5x^2+9x+3-x^2+3x\\\\=(5x^2-x^2)+(9x+3x)+3=4x^2+12x+3
6 0
4 years ago
Yo someone help me! And please,.
Savatey [412]

Answer:

2 x 2 x 3 x 5

<em>Hope that helps! :)</em>

<em></em>

<em>-Aphrodite</em>

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Consider that an = 4n-1 represents a sequence. What is the tenth term? A) 361 B) 512 C) 1,024 D) 4,096 E) 262,144
mel-nik [20]

Hello from MrBillDoesMath!

Answer:

Choice E.

Discussion:

Assuming that n >=1, a(n) = 4n -1, then

a(10) = 4(10) - 1 = 39    

but that doesn't match any of the answers...... hmm...

BUT

If you meant that a(n) = 4^(n-1),  then

a(10) = 4^(10-1) = 4^9 =  262144    

which is Choice E.

Thank you,

MrB

4 0
3 years ago
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