3 years ago

If k is positive how does the parabola move? if negative?

1 answer:

3 0

Answer:

If a is positive, the parabola opens up or to the right. If it is negative, it opens down or to the left. The vertex is at (h, k).

You might be interested in

Marilyn has 24 hair ribbons. 9 of her ribbons are red. What percent of her hair

sergey [27]

37.5
9/24=0.375
Move the decimal two places and you get 37.5%

7 0

2 years ago

Read 2 more answers

The number of bacteria in a certain culture doubled every hour. If there were 30 bacteria present in the culture initially, how

vichka [17]

Answer:

The number of bacteria after $8th$ will be $3840$

Step-by-step explanation:

Given the initially 30 bacteria present in the culture.

Also, the number of bacteria got doubled every hour.

So, using the equation

$A=A_0r^{n-1}$

Where $A$ is number of bacteria after $n$ hours.

$A_0$ is bacteria present initially.

$r$ is the common ration, in our problem it is given that bacteria doubles every hour. So, $r=2$

And $n$ is the number of hours. In our problem we need amount of bacteria at the end of $8th$ hours. So, $n=8$

Plugging values in the formula we get,

$A=30(2)^{8-1}\\A=30\times 2^7\\A=30\times 128\\A=3840$

So, number of bacteria after $8th$ will be $3840$

3 0

3 years ago

Its an easy 25 points

boyakko [2]

Answer:

hope it's help u thank u

Step-by-step explanation:

y=-8
y=-5
y=1
y=10

8 0

1 year ago

A student solved this problem by working backwards. Joani has some stuffed animals. She has 2 times as many as Lily. Lily has 6

kramer

3x4=12 gives him 12 baseballs. he has 5 fewer tennis balls than base balls so you subtract 5 from 12 and you get 7 tennis balls.

5 0

2 years ago

F(x)=-x^2+8x-11 find the value of f(-1)-f(1)

IrinaVladis [17]

Answer: The answer is (4,5)

Step-by-step explanation:

5 0

2 years ago