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avanturin [10]
3 years ago
5

Please I need help 20 POINTS!

Mathematics
1 answer:
lana [24]3 years ago
5 0
Mia made 18 cookies to share with her best friend at school. Each day she brought 2 cookies to share with her friend. How many days does she have to bring cookies to school?

Answer: 9

Solving Steps:

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Determine whether the improper integral converges or diverges, and find the value of each that converges.
Brrunno [24]

Answer:

Converges at -1

Step-by-step explanation:

The integral converges if the limit exists, if the limit does not exist or if the limit is infinity it diverges.

We will make use of integral by parts to determine:

let:

u=x             dv=e^(2x)\cdot{dx}

du=dx         v=2\cdot{e^(2x)}

\int\limits^a_b {u} \, dv = uv -\int\limits^a_b {v} \, du

\int\limits^a_b {x\cdot{e^2^x} \, dx =2xe^2^x- \int\limits^a_b {2e^2^x} \, dx

\int\limits^a_b {xe^2^x} \, dx = 2xe^2^x-2e^2^x-C

We can therefore determine that if x tends to 0 the limit is -1

\lim_{x \to \0} 2xe^2^x-2e^2^x=0-1=-1

5 0
3 years ago
32% of a number is 64 what is the number
Serjik [45]

Answer:

If you take 32 percent of a number and get 64, then what is that number? In other words, you know that 32 percent of a number is 64 and you want to know what that initial number is. Therefore, the answer to "64 is 32 percent of what number?" is 200, and you can also derive that 32 percent of 200 equals 64.

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Which statements are true about exponential decay functions? Check all that apply. The domain is all real numbers. As the input
lorasvet [3.4K]
<h2>Answer:</h2>

The correct options are:

  • The domain is all real numbers.
  • The base must be less than 1 and greater than 0.
  • The function has a constant multiplicative rate of change.
<h2>Step-by-step explanation:</h2>

We know that the exponential function is given by:

                f(x)=ab^x

where a>0 and b are constants.

Also, it represents a growth function if b>1

and a decay function if 0<b<1

where b is the base.

  • x belongs to whole of the real numbers( since the exponential function is well defined for all the real values of x.

Hence, the domain of the function is all the real numbers )

  • Also, the graph of a decay function decreases continuously i.e. with the increasing input value the output value decreases.
  • The exponential decay function always have a constant multiplicative rate of change i.e. b.
8 0
3 years ago
Read 2 more answers
A saleswoman earns 3% commission on all the merchandise that she sells. Last month she sold $9000 worth of merchandise. How much
SashulF [63]

3/100 = 0.03

9000 * 0.03 = 270

She got $270 in commission last month.

8 0
3 years ago
Read 2 more answers
(QUICK RESPONSE!!!) Which graph shows the solution set for 2 x + 3 greater-than negative 9?
iris [78.8K]

Answer:

It's the last answer choice

Step-by-step explanation:

2x+3> -9

2x+3-3> -9-3

2x> -12

2x/2> -12/2

x> -6

6 0
3 years ago
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