Answer:
20
Step-by-step explanation:
15+(-2)+7=13+7=20
Answer:
24%
Step-by-step explanation:
First, you would need to add up the total amount of skittles in the bag.
8+5+6+4+2=25 skittles in total.
We already know that 6 of these skittles are green. Therefore, we could say that 6 out of 25 skittles are green (or as a fraction, 6/25).
6/25 skittles are green. You can now easily convert this fraction into a decimal by doing 6 divided by 25 (6/25 = 0.24)
To convert this decimal into a percentage, simply multiply by 100.
0.24 x 100 = 24%
Answer:
working hypothesis.
Step-by-step explanation:
Hypothesis is a technique in mathematics used to identify between two events. The event is tested for hypothesis using the null hypothesis and an alternative hypothesis is set to compare the results. If there are more than one hypothesis then there is working hypothesis technique used to identify the conclusion.
Answer:

Step-by-step explanation:
For this case the solution flows at a rate of 2L/min and leaves at 1L/min. So then we can conclude the volume is given by 
Since the initial volume is 10 L and the volume increase at a rate of 1L/min.
For this case we can define A as the concentration for the salt in the container. And for this case we can set up the following differential equation:

Because at the begin we have a concentration of 8 gr/L and would be decreasing at a rate of 
So then we can reorder the differential equation like this:

We find the solution using the integration factor:

And then the solution would be given by:

And if we simplify this we got:

And after do the integral we got:

And using the initial condition t=0 A= 20 we have this:


So then we have this function for the solution of A:

And now replacinf t= 40 we got:

Answer:
Step-by-step explanation:
so first make an equation...
10x=2x-32
then do distributive property
10x-2x=2x-32-2x
8x=-32
then divide negative 32 by 8
x= negative 4