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Nana76 [90]
2 years ago
10

Please help answer this question

Mathematics
2 answers:
8_murik_8 [283]2 years ago
7 0

Answer:

C

Step-by-step explanation:

mihalych1998 [28]2 years ago
6 0

Answer:

its c

Step-by-step explanation:

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Find f-1(x), if f(x) = 3x – 6. Justify your
Sergio039 [100]
Answer: 1/3 (x + 6)

Explanation: given f(x) = 3x - 6.
Let y = f(x) and so y = 3x - 6.
Trade places between x and y.
x = 3y - 6
Solve for y
x + 6 = 3y
y = x + 6/3
Now the new y is the inverse and so y = f-1(x)
f-1(x) = 1/3(x + 6)
4 0
2 years ago
Explain the special pattern for sketching a parabola
Lady bird [3.3K]

Answer:

the parabola can be written as:

f(x) = y = a*x^2 + b*x + c

first step.

find the vertex at:

x  = -b/2a

the vertex will be the point (-b/2a, f(-b/2a))

now, if a is positive, then the arms of the parabola go up, if a is negative, the arms of the parabola go down.

The next step is to see if we have real roots by using the Bhaskara's equation:

x =  \frac{-b +-\sqrt{b^2 -4ac} }{2a}

Now, draw the vertex, after that draw the values of the roots in the x-axis, and now conect the points with the general draw of the parabola.

If you do not have any real roots, you can feed into the parabola some different values of x around the vertex

for example at:

x =  (-b/2a) + 1 and x =  (-b/2a) - 1

those two values should give the same value of y, and now you can connect the vertex with those two points.

If you want a more exact drawing, you can add more points (like x =  (-b/2a) + 3 and x =  (-b/2a) - 3) and connect them, as more points you add, the best sketch you will have.

8 0
3 years ago
Choose the like terms: 2l,2,l
Semmy [17]
21 and 1 because both numbers are odd
8 0
3 years ago
2 1/7 + 9 15/28 + -9 5/14
Free_Kalibri [48]

Answer:

65/28 or 2 9/28

Step-by-step explanation:

Hope this helps!

3 0
3 years ago
What two numbers multiply to -84 and add up to 17
allsm [11]
The two numbers are 21 and -4 because 21×(-4)=(-84). And when you add 21+(-4) you get 17.
4 0
3 years ago
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