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3 years ago

Which table shows the same relationship as y = -x^2 + 3x?

Mathematics

1 answer:

kkurt [141]3 years ago

8 0

Answer:

Step-by-step explanation:

given y = -x² + 3x.

let f(x) be y.

f(-2) = -(-2)² + 3(-2) = -10

f(-1) = -(-1)² + 3(-1) = -4

f(0) = -(0)² + 3(0) = 0

f(1) = -(1)² + 3(1) = 2

f(2) = -(2)² + 3(2) = 2

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X=2π/3

Marina86 [1]

Answer:

$cos{\frac{2\pi}{3}}=-\frac{1}{2}$ .

Reference angle is $\frac{\pi}{3}$

Step-by-step explanation:

Given the value of x. we have to find the correct value of cosx.

$x=\frac{2\pi}{3}$

Now, we have to find the exact value of $cos{\frac{2\pi}{3}}$

$cos{\frac{2\pi}{3}}=cos(\frac{\pi}{2}+\frac{\pi}{6})$

$=-sin(\frac{\pi}{6})$

$=-\frac{1}{2}$

Now, we have to find the reference angle of $x=\frac{2\pi}{3}$ .

Since the angle $x=\frac{2\pi}{3}$ lies in second quadrant, the reference angle formula is

Reference angle= $\pi-given angle$ .

= $\pi-\frac{2\pi}{3}=\frac{\pi}{3}$

3 0

3 years ago

What is the greatest common factor (GCF) of 80 and 100?

marshall27 [118]

Answer:

20.

Step-by-step explanation:

We found the factors and prime factorization of 80 and 100. The biggest common factor number is the GCF number. So the greatest common factor 80 and 100 is 20

4 0

3 years ago

Read 2 more answers

A ball gets kicked from the ground, and the equation that models the height of the ball (measured in metres) versus time (measur

VikaD [51]

Answer:

MFG Graphing Parabolas - Yoshiwara Booksyoshiwarabooks.org › mfg › Graphing-Parabolas

Some parabolas are shown below. ... This high or low point is called the vertex of the graph. ... Points where the parabola intersects the [Math Processing Error] x -axis are called the ... For a soccer ball kicked from the ground, these functions are ... of the ball t seconds after its release would be given in meters by the function.

Step-by-step explanation:

5 0

3 years ago

what do i put the box like <6 but with the line under? cause when i checked if it was right it said it was wrong

alexdok [17]

Since it’s a closed circle it would be x≥6 with the line

8 0

3 years ago

How do you simplify -14/63

leonid [27]

14 = 7*2
63 = 7*9

14 7 * 2 2 2
---- = ------- 7/7 =1, so = 1 * ------ = ----
63 7 * 9 9 9

7 0

3 years ago