All categories

2 years ago

I need help, please?

Mathematics

1 answer:

Gre4nikov [31]2 years ago

4 0

Answer:

The answer is 21

Step-by-step explanation:

6+6 bc the other side is the same as the one that has 6. 6+6+9=21

You might be interested in

Find the angle with a tangent ratio of 0.6009.

ANEK [815]

31.0016578 degrees :D

3 0

2 years ago

Read 2 more answers

What is f?<br> To 2 decimal places

Goryan [66]

Tan 32 = f/18
f = 18 × tan 32
= 11.25
= 11 ( to 2 sf)

Hope it helped

8 0

2 years ago

Read 2 more answers

Consider the function given by the graph. What are

horrorfan [7]

Answer:

the values of it is the first one. meaning: f(-2)

8 0

2 years ago

Is what I did a correct step?<br>If so, what is the next step?<br>

qaws [65]

Next step would be 5x10x5

8 0

2 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.

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

t=415.63 minutes

6 0

3 years ago