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Leno4ka [110]
3 years ago
9

State how many imaginary and real zeros the function has.

Mathematics
1 answer:
Orlov [11]3 years ago
5 0
The answer is a)
<span>0 imaginary; 3 real
proof

f(3)= = 27-20.9+123.3-216= 216-216=0
so f(x)=(x-3)(ax²+bx+c)=0
after doing euclidean division </span>
<span>ax²+bx+c= (x-8)(x-9)=x²-17x+72
and  </span><span><span>x²-17x+72</span> = (x-8)(x-9)
so f(x)=(x-3)</span><span><span>(x-8)(x-9)</span>

f(8)= 8^3-20*64+123*8-216=216-216=0
f(9)=9^3-20*81+123*9-216=0

</span> 




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Not always but your answer is sometimes 
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4 years ago
Find the area of the triangle. A= 125°, b= 9, c= 6
Semmy [17]

The area of given triangle is: 22.1184

Step-by-step explanation:

When we only know two sides of a triangle and the included angle then the area of triangle is given by:

A = \frac{1}{2} * side\ 1 * side\ 2 * angle

Given

b = 9

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So the formula will be:

A = \frac{1}{2} bc * sin\ A\\A = \frac{1}{2} * 9 * 6 * sin\ 125\\A = 27 * 0.8192\\A = 22.1184

Hence,

The area of given triangle is: 22.1184

Keywords: Triangle, Area

Learn more about triangle at:

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3 years ago
Please show all steps for answering this problem!!!
Anarel [89]
(4x^5-15x^3-10x^2)-(2x^5-5x^3-2x^2)

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Now, we will add like terms.

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Now, there's a common factor that all of these terms share; it's 2x^2. 2x^5 can be divided by 2, as well as -10x^3 and -8x^2 (these are the coefficients, number found in front of the variable.) So, we'll distribute 2

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8 0
3 years ago
What two number multiply to -132 and add to -1
EastWind [94]

Answer:

The two numbers can be -12 and 11, or 11 and -12.

Step-by-step explanation:

xy=-132

x+y=-1

-------------

x=-1-y

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-y-y^2=-132

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factor out the trinomial,

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zero property,

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y=0+11=11,

y=0-12=-12

x+11=-1 & x+(-12)=-1

x=-1-11=-12

x=-1-(-12)=-1+12=11

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4 years ago
Find the slope of the line. <br> -3<br> 1/3<br> -1/3<br> 3
oksian1 [2.3K]
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1/3
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