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3 years ago

What is the equation of the parabola, in vertex form, with vertex at (2,-4) and

Mathematics

2 answers:

kari74 [83]3 years ago

8 0

Answer:

$y=\left(x-2\right)^{2}-4$

Step-by-step explanation:

I graphed the vertex and directrix on the graph below and found the equation for the parabola.

If this answer is correct, please make me Brainliest!

Ad libitum [116K]3 years ago

4 0

Answer:

I'm not good at math but you can add me on Instagram npw.angela

Step-by-step explanation:

i need new friends

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The area of a rectangle is 72 cm square. The length of the rectangle is 6 cm longer than the width. What is the width of the rec

miskamm [114]

The correct option will be : B) 6 cm.

Explanation

Suppose, the width of the rectangle is $x$ cm.

As, the length is 6 cm longer than the width, so the length will be: $(x+6) cm.$

Formula for the Area of rectangle is: $(Length)*(Width)$

Given that, the area of a rectangle is 72 cm²

So....

$x(x+6)=72\\ \\ x^2+6x-72=0\\ \\ (x+12)(x-6)=0$

Using zero-product property, we will get...

$x+12=0\\ x= -12$ (Negative value is ignored as width can't be negative)

and

$x-6=0\\ x=6$

So, the width of the rectangle is 6 cm.

6 0

3 years ago

The ratio of the number of hippos to the number of crocodiles at a watering hole is 4:3. If you draw a double number line diagra

devlian [24]

Answer: 26.67

Step-by-step explanation: multiply 20 and 4/3

4 0

3 years ago

You and your friends decide to rent some studio time to make a CD. Big notes studio rinse for $100 plus $60 per hour. Great soun

Orlov [11]

About 3.8 hours, if asking for a whole number round to 4

8 0

3 years ago

-3x + 9 = -18 what's the answer

Art [367]

Answer:

x=9

Step-by-step explanation:

subtract 9 from both sides.

-3x = -27

divide by -3

x=9

6 0

3 years ago

Read 2 more answers

Solve this: if [a]=2,then 1[a]0=120 feet, and if [c]=8, then 6[c]=68 feet

katrin2010 [14]

Well the answer would be 120=120 and 68=68

5 0

4 years ago