3 years ago

For which value of c is the line y=3x+c a tangent to the parabola with equation y=x2-5x+7

1 answer:

7 0

Hello :
the slope of tangent in A(x':y') is : f'(x') =3
f'(x) = 2x-5
2x'-3 =3
2x' = 6
x' = 3
f(3)= 3²-5(3)+7=1
1 =3(3)+c
c =-8

You might be interested in

9966 [12]

Here’s the correct answer and the way i got to it. Hope this helps :)

4 0

3 years ago

Anna35 [415]

Answer:

-2

Step-by-step explanation:

1. Distribute: -3x + 6x + 3 = x-1

2. Combine like terms: 3x + 3 = x-1

3. Subtract 3 on both sides: 3x = x-4

4. Subtract x on both sides: 2x = -4

5. Divide each side by 2: x = -2

6. Check by plugging in -2 to the equation:

4 0

3 years ago

Pachacha [2.7K]

1 furlong = 1/8 miles
6 furlongs = x miles
xmiles = 1/8(6 furlongs)
Xmiles= 3/4 miles
Which is 0.75 miles

Please give my answer the brainliest

7 0

3 years ago

Annette [7]

Answer:

If something has stripes it is not always a zebra but a zebra always has stripes

Step-by-step explanation:

Many things have stripes and aren't called zebras

5 0

3 years ago

ollegr [7]

$1\frac{1}{2} = 1 + \frac{1}{2} = \frac{2}{2} + \frac{1}{2} = \boxed{\frac{3}{2}}$

4 0

3 years ago