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Nana76 [90]
3 years ago
8

If f(x) = x^2 — 3x, explain how to find f(—1.8).

Mathematics
1 answer:
gogolik [260]3 years ago
5 0

Answer:

Plug -1.8 into each x so the equation would become (-1.8)^2 - 3(-1.8)

Step-by-step explanation:

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Rewrite the expression x^3+10x^2+13x+39/x^2+2x+1 in the form of q(x)+r(x)/b(x)
natima [27]

\dfrac{x^3+10x^2+13x+39}{x^2+2x+1}

x^3=x\cdot x^2, and x(x^2+2x+1)=x^3+2x^2+x. Subtracting this from the numerator gives a remainder of

(x^3+10x^2+13x+39)-(x^3+2x^2+x)=8x^2+12x+39

8x^2=8\cdot x^2, and 8(x^2+2x+1)=8x^2+16x+8. Subtracting this from the previous remainder gives a new remainder of

(8x^2+12x+39)-(8x^2+16x+8)=-4x+31

-84x is not a multiple of x^2, so we're done. Then

\dfrac{x^3+10x^2+13x+39}{x^2+2x+1}=x+8+\dfrac{-4x+31}{x^2+2x+1}

4 0
3 years ago
Evaluate the expression when a= 6 and c= -6. -a+9c​
Troyanec [42]

Answer:

=-a +9c

=-6+9×-6

=-6+(-54)

=-6-54

=-60

hope it helps you!!!

stay safe healthy and happy!!!!

7 0
3 years ago
The cost, y, of red apples can be represented by the equation y = 2x, where x
Temka [501]

Answer:

red apples

Step-by-step explanation:

1 lb of green apples is 1.5

1 lb of red apples is 2

6 0
2 years ago
The probability of a red marble being pulled from a bag full of colored marbles is
Mkey [24]
The answer is 5/7. That is the answer :)
6 0
3 years ago
Factorize by splitting the middle term 6x-11x+4​
Gennadij [26K]

Answer: (2x - 1)(3x - 4)

(split -11x as -8x and -3x)

Step-by-step explanation:

I am assuming that it is actually 6x^2 - 11x + 4

To find out how to split the middle term: The two numbers should multiply to a*c (6*4 = 24) and add to b (-11)

-8, -3 works

(6x^2 - 8x) + (-3x + 4)

2x(3x - 4) + -1(3x - 4)

(2x - 1)(3x - 4)

5 0
3 years ago
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