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3 years ago

11

13) PLEASE HELP WITH QUESTION. WILL MARK BRAINLIEST + POINTS GIVEN.

1 answer:

zvonat [6]3 years ago

7 0

The 2nd one i'm pretty sure i did it with a calculator

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Х<br> Y<br> K<br> 6<br> un 00<br> 5<br> 9<br> ??<br> K= Y/X<br> Y = K(X). K=. Y=?????

zhenek [66]

Answer:

Yep

Step-by-step explanation:

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3 years ago

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I need help reviewing my anwsers

storchak [24]

Try everything you can find to see if you feel like its right

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3 years ago

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Given the following three points, find by the hand the quadratic function they represent (0,6, (2,16, (3,33)

Lisa [10]

Answer:

$f(x) = 4x^2 - 3x + 6$

Step-by-step explanation:

Quadratic function is given as $f(x) = ax^2 + bx + c$

Let's find a, b and c:

Substituting (0, 6):

$6 = a(0)^2 + b(0) + c$

$6 = 0 + 0 + c$

$c = 6$

Now that we know the value of c, let's derive 2 system of equations we would use to solve for a and b simultaneously as follows.

Substituting (2, 16), and c = 6

$f(x) = ax^2 + bx + c$

$16 = a(2)^2 + b(2) + 6$

$16 = 4a + 2b + 6$

$16 - 6 = 4a + 2b + 6 - 6$

$10 = 4a + 2b$

$10 = 2(2a + b)$

$\frac{10}{2} = \frac{2(2a + b)}{2}$

$5 = 2a + b$

$2a + b = 5$ => (Equation 1)

Substituting (3, 33), and c = 6

$f(x) = ax^2 + bx + x$

$33 = a(3)^2 + b(3) + 6$

$33 = 9a + 3b + 6$

$33 - 6 = 9a + 3b + 6 - 6$

$27 = 9a + 3b$

$27 = 3(3a + b)$

$\frac{27}{3} = \frac{3(3a + b)}{3}$

$9 = 3a + b$

$3a + b = 9$ => (Equation 2)

Subtract equation 1 from equation 2 to solve simultaneously for a and b.

$3a + b = 9$

$2a + b = 5$

$a = 4$

Replace a with 4 in equation 2.

$2a + b = 5$

$2(4) + b = 5$

$8 + b = 5$

$8 + b - 8 = 5 - 8$

$b = -3$

The quadratic function that represents the given 3 points would be as follows:

$f(x) = ax^2 + bx + c$

$f(x) = (4)x^2 + (-3)x + 6$

$f(x) = 4x^2 - 3x + 6$

6 0

3 years ago

Find the area of each figure. Use 3.14 for pie.

Murrr4er [49]

Answer:

sorry

Step-by-step explanation:

i think hope this helps

7 0

3 years ago

Plz help me well mark brainliest if you are correct!!.....

emmainna [20.7K]

Step-by-step explanation:

the base is 5unit and the height is 9unit

8 0

3 years ago

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