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2 years ago

PLEASE HELP ME

Mathematics

2 answers:

prisoha [69]2 years ago

3 0

The answers is D source I take AP Statistics

Anna007 [38]2 years ago

3 0

The right answers is D.

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I went to Cookie Plug and bought 7 cookies for $20. How much is it per cookie? Show your work, what operation did you use? Round

siniylev [52]

Answer:

2.8

Step-by-step explanation:

I guess?

Sana makatulong

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3 years ago

Can you please help me solve this and show the solution 4y⁴+6y?

Pepsi [2]

Answer:

4y^4 + 6y = 256y + 6 = <u>262y</u>

Step-by-step explanation:

Remove the variables for a second and think of the problem as a normal expression; 4^4 + 6

Simplify the first term; 4^4 = 256

Now, add 6; 256 + 6 = 262

Add back in the variable; 262y

4 0

3 years ago

Read 2 more answers

Kyle notices that the number of likes he receives each day on his social media page is a function. He decides to create a graph

12345 [234]

Answer:

B) y=12x

Step-by-step explanation:

We are given with the coordinates $(0,0) , (1,12) \ and \ (2,24)$

Where $x$ represents the number of days.

$y$ represents the number of likes she got.

To model the equation using Kyle's data we find the slope using the given coordinate.

Let us say $(0,0) \ as \ (x1 , y1)$ and $(1,12) \ as \ (x2,y2)$

Slope $(m)$ formula , $m=\frac{(y2-y1)}{(x2-x1)}$

Plug in the above points now, we get

$m=\frac{(12-0)}{(1-0)} =\frac{12}{1} =12$

Now we use the point-slope formula, $(y-1)= m(x-x1)$

Plugging the corresponding values.

$(y-0)= 12(x-0)\\y=12x$

Thus option is B is the correct answer.

5 0

3 years ago

Suppose you had d dollars in your bank account. You spent $22 but have at least $42 left. How much money did you have initially?

german

1) What left

$\boxed {d-22 \geq 42}$

*Obs: remember that left at least 42 dollars. In other words, the left over is equal or more than 42 dollars.

2) At the beginning

$d-22 \geq 42 \\ \\ \boxed {d \geq 64}$

Letter C

4 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.

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

t=415.63 minutes

6 0

3 years ago