If Johnny has 3 apples and he gives Tom one apple how many apples does Johnny have

Mathematics

2 answers:

Bezzdna [24]3 years ago

8 0

2 apples 3-1=2 because if you have 3 apples and tom takes 1 do the math 1-3 you're answer is 2

charle [14.2K]3 years ago

3 0

3-1=2
He has 2 apples

You might be interested in

Identify the sample space of the probability experiment: answering a true or false question.

Rainbow [258]

Answer:

we would need to know what the experiment was or we can't awnser

8 0

3 years ago

7:11 and 21:33 yes or no

grandymaker [24]

Yes!! They both are equivalent.....

7 0

3 years ago

I'm studying a new bacteria that doubles in numbers every 25 minutes. If i start with 50 bacteria, how long until i have 5 milli

dimaraw [331]

Answer:

415.63 minutes

Step-by-step explanation:

Growth can be represented by the equation $A=A_0e^{rt}$ . We can find the rate at which it grows by using t=25 minutes and $\frac{A_{0}}{A} =2$ or double the amount at that time. The first step we always take is to divide $A_0$ by A.

$[tex]\frac{A_{0}}{A}=e^{rt}\\2=e^{r(25)}$

$2=e^{(25)r}$

To solve for r, we will take the natural log of both sides and use log rules to isolate r.

$ln 2=ln e^{(25)r}\\ln 2=25r (ln e)\\\frac{ln2}{25} =r$

We know $lne=1$ so we were able to cancel it out and divide both sides by 25.

We solve with a calculator $\frac{ln2}{25} =r\\0.0277=r$

We change 0.0277 into a percent by multiplying by 100 to get 2.77% as the rate.

The equation is $A=A_0e^{0.0277t}$ .

We repeat the step above substituting A=5,000,000, $A_0$ =50, and r=0.02777. Then solve for t.

$5000000=50e^{0.0277t}\\\frac{5000000}{50} =e^{0.0277t}\\100000=e^{0.0277t}\\ln100000=lne^{0.0277t}\\ln100000=0.02777t(lne)\\\frac{ln100000}{0.0277} =t$