ASAP THIS WAS DUE AN HOUR AGO

Mathematics

2 answers:

marysya [2.9K]3 years ago

8 0

Keep on adding -3 from the 5

sergeinik [125]3 years ago

3 0

Keep on adding -3 for the next 5.

You might be interested in

PLEASE HELP I NEED TO TURN THIS IN TODAY!!!!!!!!!

harkovskaia [24]

Answer:

Step-by-step explanation:

and dont give brainliest

lel

6 0

3 years ago

If twice a number, n, is 5 less than the number squared, which of the following equations could be used to properly solve for n?

hjlf

Answer:

2n - 5 = n^2 (or n squared)

3 0

3 years ago

Plz help me well mark brainliest if you are correct!!

LuckyWell [14K]

Answer:

4 units

Step-by-step explanation:

Distance like magnitude is simply a positive value

----------------------------

Since the y coordinate is the same

the distance is just the difference in the x coordinates

from -5 to -1 is a distance of 4

8 0

3 years ago

Suppose a tank contains 400 gallons of salt water. If pure water flows into the tank at the rate of 7 gallons per minute and the

Strike441 [17]

Answer:

Step-by-step explanation:

This is a differential equation problem most easily solved with an exponential decay equation of the form

$y=Ce^{kt}$ . We know that the initial amount of salt in the tank is 28 pounds, so

C = 28. Now we just need to find k.

The concentration of salt changes as the pure water flows in and the salt water flows out. So the change in concentration, where y is the concentration of salt in the tank, is $\frac{dy}{dt}$ . Thus, the change in the concentration of salt is found in

$\frac{dy}{dt}=$ inflow of salt - outflow of salt

Pure water, what is flowing into the tank, has no salt in it at all; and since we don't know how much salt is leaving (our unknown, basically), the outflow at 3 gal/min is 3 times the amount of salt leaving out of the 400 gallons of salt water at time t:

$3(\frac{y}{400})$