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Travka [436]
3 years ago
15

Solve F(x) for the given domain.F(x) = x² + 3x - 2F(3)=____a. 13b. 16C. 40​

Mathematics
2 answers:
Llana [10]3 years ago
5 0

Answer:

B. 16

Step-by-step explanation:

F(3) means we must plug the number "3" into the equation for each x.

(3)^2 + 3(3) -2

9 + 9 - 2

16

Juliette [100K]3 years ago
5 0

Answer:

16

Step-by-step explanation:

F(x) = x² + 3x - 2

Let x=3

F(3)= 3^2 +3*3 -2

     = 9+9-2

    = 18-2

     =16

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3/7x + 4 = -1/2<br><br>explain pls
Temka [501]
3/7x + 4 = -1/2
subtract 4 from both sides
3/7x= -1/2 - 4
3/7x= -4 1/2
divide both sides by 3/7
x= -4 1/2 ÷ 3/7
convert -4 1/2 to improper fraction
x= (-4*1+1)/2 ÷ 3/7
x= -9/2 ÷ 3/7
multiply by reciprocal of 3/7
x= -9/2 * 7/3
multiply numerators & denominators
x= (-9*7)/(2*3)
x= -63/6
x= -10 3/6
simplify 3/6 by 3
x= -10 1/2

CHECK:
3/7x + 4 = -1/2
3/7(-63/6) + 4= -1/2
(3*-63)/(7*6) + 4= -1/2
-189/42 + 4= -1/2
-4 1/2 + 4= -1/2
-1/2= -1/2

ANSWER: x= -63/6 or -10 1/2

Hope this helps! :)
4 0
2 years ago
What is the complete factorization of the polynomial below
DerKrebs [107]

Answer:

a. \ (x-2)(x+i)(x-i)

Step-by-step explanation:

First of all let's notice that (x-i)(x-i)=(x-i)^2 = x^2+2xi-1 \in \mathbb{C} while our original polynomial is real. So we can rule out the even options B and D. At this point, if the polynomial has a factor of (x-\alpha) it means tha \alpha is a zero of the polynomial. Let's check both 2 (for option a) and -2 (for option c)

p(2)=2^3-2(2)^2+2-2= 8-8+2-2=0

p(-2)= (-2)^3-2(-2)^2+(-2)-2=-8-8-2-2=-20

At this point 2 is a zero, and our final factoring is a(x-2)(x+i)(x-i)

7 0
2 years ago
Resultant Terms in Exponential Form 13^-11 * 13^16 * 13^-3 * 13^4 * 13^-5
Yuki888 [10]
Easy
remember
(x^m)(x^n)=x^(m+n)
basically add exponens when the base is same
(13^-11)(13^16)(13^-3)(13^4)(13^-5)=
13^(-11+16-3+4-5)=
13^(5-4)=
13^1=13
6 0
3 years ago
What is the relationship between the 6s in the number 7,664
vazorg [7]
It is in the ones and tens digit i think thats the answer
8 0
3 years ago
Read 2 more answers
Drag the measurements to put them in order From least to greatest 7 g 7 kg seven centigrams 7 mg
Arturiano [62]

Answer:

7 mg, 7 centigrams, 7g, 7kg

3 0
3 years ago
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