3 years ago

Twice as number decreased by 9 is 7

1 answer:

8 0

You said that. 2x - 9 = 7 . . . . . Add. 9. to each side: 2x = 16 . . . . . Divide each side by 2 : x = 8

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ehidna [41]

Times 339 by . 2 and you get

7 0

2 years ago

Alina [70]

$y = -\frac{1}{9}(x - 1)^2 - 6$

Step-by-step explanation:

The vertex form of the equation for a parabola is given by

$y = a(x - h)^2 + k$

where (h, k) are the coordinates of the parabola's vertex. Since the vertex is at (1, -6), we can write the equation as

$y = a(x - 1)^2 - 6$

Also, since the parabola passes through (4, -7), we can use this to find the value for a:

$-7 = a(4 - 1)^2 - 6 \Rightarrow -7 = 9a - 6$

$a = -\frac{1}{9}$

Therefore, the equation of the parabola is

$y = -\frac{1}{9}(x - 1)^2 - 6$

7 0

2 years ago

Mandarinka [93]

The correct answer is B.)

5 0

2 years ago

kobusy [5.1K]

Hope this answers your question :)

5 0

2 years ago

Salsk061 [2.6K]

31) 27
32) 75
33) 74
34) 90 (because it’s a right angle and adds up to 180)

4 0

2 years ago