3 years ago

Help me please it’s due today

1 answer:

8 0

1. B. $20
2. B. 25%
3. C. 35%
I think.

You might be interested in

alex41 [277]

The total would be $2.73.

7 0

3 years ago

bija089 [108]

D 39.25 which isn't far from 40

8 0

3 years ago

alina1380 [7]

Answer:

The reaction ca occur at 10 degree Celsius or -14 degree Celsius.

Step-by-step explanation:

We are given the following in the question:

The completion of a chemical reaction is expressed by the equation

$y = 300 - 4x -x^2$

where y is the number of seconds needed to complete the reaction and x is the temperature in degrees Celsius at which the reaction occurs.

We have to find the temperature at which the reaction occurs, if the completion time of reaction is 160 seconds.

Putting y = 160

$160 = 300 - 4x -x^2\\x^2 + 4x - 140 = 0\\x^2 + 14x -10x -140 = 0\\x(x+14)-10(x+14)=0\\(x-10)(x+14) = 0\\(x-10) =0, (x+14) =0\\x = 10, x = -14$

Thus, the reaction ca occur at 10 degree Celsius or -14 degree Celsius.

5 0

3 years ago

Naddika [18.5K]

C is the least that is beause it is .015 which is smaller than 0.15

8 0

3 years ago

maw [93]

Answer:

Step-by-step explanation:

25% is 1/4 of the bag. 12x4 = 48.

There are 48 jelly beans in the bag.

Hope that helps

8 0

3 years ago