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katovenus [111]
3 years ago
10

WILL GIVE BRAINLIEST

Mathematics
2 answers:
iVinArrow [24]3 years ago
5 0

Answer:

-9

Step-by-step explanation:

brainliest?

maks197457 [2]3 years ago
3 0
-9 the slope is always the number multiplied by x y=-9x+2
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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
4 years ago
I urgently need help!!!!
LekaFEV [45]

Answer:

A. C (3,5)

Step-by-step explanation:

This makes the most sense because of the position point C is at on the coordinate plane. It is above point D, which has a x-axis of 3. Option A is the only one that has an x-axis of 3.

Hope it helps!

6 0
3 years ago
What is the area of the polygon in square units?<br> Correct answer gets brainliest
givi [52]

Answer:

72

Step-by-step explanation:

7 0
3 years ago
Arthur Jackson can run 1,500 meters in about 3 1/2 minutes. How many meters per minute is this?
Nimfa-mama [501]

(1500 meters) / (about 3.5 minutes) =

(1500/about 3.5) (meters/minute) =

<em>about 428.6 meters/minute</em>

6 0
3 years ago
Which graph represents this equation? <br> Equation: y = 2/3x^2 - 6x
vovangra [49]

Answer:

I'm afraid that none of them are, as the x-intercepts of the equation are 0 and 9 respectively

however, D. is the closest to it, and it would be the correct graph if there were parentheses around x^{2}-6x

Step-by-step explanation:

7 0
3 years ago
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