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GenaCL600 [577]
3 years ago
12

Please help me, I'm lost.

Mathematics
1 answer:
MA_775_DIABLO [31]3 years ago
5 0

Answer:

a. y = 250 (0.4)^x

b. 0.066

Step-by-step explanation:

The equation can be modeled as a geometric sequence, where the first term is 100 and the common ratio is 0.4.

y = 100 (0.4)^(x − 1)

This can also be simplified to:

y = 250 (0.4)^x

When x = 9:

y = 250 (0.4)^9

y = 0.066

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-1 5/6x 6 1/2<br> please explain now!
Vlad1618 [11]

The value of the given expression -1 5/6 x 6 1/2 is equal to  -11 11/12.

As given in the question,

Given expression is equal to :

-1 5/6 x 6 1/2

Simplify the given expression -1 5/6 x 6 1/2 to get the value of the expression:

-1 5/6 x 6 1/2

Convert mixed fraction to proper fraction we have :

-1 5/6 = -11 /6

6 1/2 = 13 /2

-11/6 × 13 /2

= -(11 ×13) / (6×2)

= -143 /12

Convert the proper fraction into mixed fraction we get,

= -11  11/12

Therefore, the value of the given expression -1 5/6 x 6 1/2 is equal to  -11 11/12.

The complete question is:

Find the value of the given expression:

-1 5/6 x 6 1/2

please explain now!

Learn more about expression here

brainly.com/question/14083225

#SPJ1

8 0
1 year ago
What is the length of the triangle below?
Butoxors [25]

Answer:

b-78 give me brainiest

5 0
3 years ago
If 3,000 bacteria, with a growth constant (k) of 2.8 per hour, are present at the beginning of an experiment, in how many hours
Ivenika [448]

Given:

Initial number of bacteria = 3000

With a growth constant (k) of 2.8 per hour.

To find:

The number of hours it will take to be 15,000 bacteria.

Solution:

Let P(t) be the number of bacteria after t number of hours.

The exponential growth model (continuously) is:

P(t)=P_0e^{kt}

Where, P_0 is the initial value, k is the growth constant and t is the number of years.

Putting P(t)=15000,P_0=3000, k=2.8 in the above formula, we get

15000=3000e^{2.8t}

\dfrac{15000}{3000}=e^{2.8t}

5=e^{2.8t}

Taking ln on both sides, we get

\ln 5=\ln e^{2.8t}

1.609438=2.8t                  [\because \ln e^x=x]

\dfrac{1.609438}{2.8}=t

0.574799=t

t\approx 0.575

Therefore, the number of bacteria will be 15,000 after 0.575 hours.

4 0
3 years ago
What should be subtracted from 5/8 to make it -1​
user100 [1]

Answer:

13/8

Step-by-step explanation:

let the number be x

5/8 - x = -1

-x = -1 - 5/8

-x = - 13/8

x = 13/8

5/8- 13/8 = -1

5 0
2 years ago
Read 2 more answers
A huge ice cream sundae is made for a charity. It contains about 6,900 pounds of topping. The topping flavors are chocolate, but
Dennis_Churaev [7]

Answer:

7500 pounds of toppings

Step-by-step explanation:

6,900 + 600=

3 0
3 years ago
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