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iVinArrow [24]
3 years ago
14

3. If x = 12 which equation is true? 7.11B

Mathematics
2 answers:
galina1969 [7]3 years ago
5 0

Answer:

C

Step-by-step explanation:

evaluate each

3(20-12)=48

3(8)=48

24=48 FALSE

3(12-12)=3

3(0)=3

0=3 FALSE

2(12-3)=18

2(9)=18

18=18 TRUE

5(12)-3=58

60-3=58

57=58 FALSE

Alisiya [41]3 years ago
4 0
It’s C It’s c It’s c it’s c it’s c
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Find an equation of a sphere if one of its diameters has endpoints (3, 2, 5) and (5, 6, 7). Incorrect: your answer is incorrect.
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use midpoint equation

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midpoint: (3+5)/2, (2+6)/2, (5+7)/2 = (4,4,6)

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On Saturday, Wendy babysat for
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4 0
3 years ago
Complete the steps to solve the polynomial equation x3 – 21x = –20. According to the rational root theorem, which number is a po
jeka94

Answer:

Zeroes : 1, 4 and -5.

Potential roots: \pm 1, \pm 2, \pm 4, \pm 5, \pm 10, \pm 20.

Step-by-step explanation:

The given equation is

x^3-21x=-20

It can be written as

x^3+0x^2-21x+20=0

Splitting the middle terms, we get

x^3-x^2+x^2-x-20x+20=0

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Splitting the middle terms, we get

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Therefore, the zeroes of the equation are 1, 4 and -5.

According to rational root theorem, the potential root of the polynomial are

x=\dfrac{\text{Factor of constant}}{\text{Factor of leading coefficient}}

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Factors of leading coefficient ±1.

Therefore, the potential root of the polynomial are \pm 1, \pm 2, \pm 4, \pm 5, \pm 10, \pm 20.

3 0
4 years ago
. The total cost (t) is proportional to the number (n) of items purchased at a constant price of $3.
navik [9.2K]

Answer

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Step-by-step explanation:

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3 0
3 years ago
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