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2 years ago

If x=3, what is the value of the following expression? 3x² + 2

Mathematics

2 answers:

siniylev [52]2 years ago

7 0

Answer: -27

Step-by-step explanation:

If x = —3, what is the value of — 3x23x2?

(A) —27

(B) —18

(D) 27

(E) 81

Your welcome, mind pressing the gold crown down below it will help me out alot ...

Stolb23 [73]2 years ago

3 0

Answer:

Step-by-step explanation:

substitute the value of x in the equation 3x^2+2= 3(3×3) + 2 =3×9+2 =27+2=29.....

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4. From a faculty of six professors, six associate professors, ten assistant professors, and twelve instructors, a committee of

Degger [83]

Answer:

P=0.228

Step-by-step explanation:

We know that from a faculty of six professors, six associate professors, ten assistant professors, and twelve instructors, a committee of size six is to be selected.

Therefore, we have 34 people.

We calculate the number of possible combinations:

$C^{34}_6=\frac{34!}{6!(34-6)!}=1344904\\$

Of the 6 professors we choose 2, and of the other 28 people we choose 4.

We calculate the number of favorable combinations:

$C_2^6\cdot C_4^{28}=\frac{6!}{2!(6-2)!}\cdot \frac{28!}{4!(28-4)!}=15\cdot 20475=307125\\$

Therefore, the probability is:

$P=\frac{307125}{1344904}=0.228$

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3 years ago

The volume of the triangular prim is 250 cubic inches. What is the value of x

Vinvika [58]

Answer:

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Step-by-step explanation:

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3 years ago

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goblinko [34]

Answer:

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Step-by-step explanation:

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3 years ago

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MatroZZZ [7]

Answer:

48-20x=21

Step-by-step explanation:

So, we basically have to clear the fractions (get rid of the denominators)

Multiply everything by the LCM of 6 and 8 (24)

24(2)-24(5/6x)=24(7/8)

48-20x=21

Hope this helps!

6 0

3 years ago

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Agata [3.3K]

Answer:

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Step-by-step explanation:

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3 years ago

If x=3, what is the value of the following expression? 3x² + 2​

If x=3, what is the value of the following expression? 3x² + 2