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Naddik [55]
3 years ago
15

Stanley had $10.75. he bought a notebook for $1.89 and a package of pens for $3.72 he used the rest of his money to buy as many

folders as he can. if each folder cost $0.64 how many folders can stanley buy?
Mathematics
1 answer:
GaryK [48]3 years ago
8 0
1.89 + 3.72 = 5.61
10.75 - 5.61= 5.14
5.14 x 100= 514
0.64 x 100= 64
(You can skip out the multiplying by 100 but doing this step makes it easier to do without a calculator)
514/64= 8.3
Round the number down to 8 and this is your answer.
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iren [92.7K]
<h2>Population becomes 550 in 27 days</h2>

Step-by-step explanation:

The population of spiders in a lab is modeled by the function P(x)=400(1.012)^{x}, where x represents the number of days since population was first counted.

   Consider that after t days, the population of spiders has grown to 550. We need to find such t.

550=400(1.012)^{t}

(1.012)^{x}=\frac{550}{400}=1.375

Applying logarithm on both sides,

xlog_{10}(1.012)=log_{10}(1.375)

x=\frac{log_{10}(1.375)}{log_{10}(1.012)}=26.6967

∴ It takes about 27 days for the population to become 550.

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3 years ago
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Step-by-step explanation:

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2 years ago
Z=5x - 11 y<br> can someone please hell
Airida [17]

Answer:

\frac{z+11y}{5}

Step-by-step explanation:

z=5x-11y

+11y on both sides

z+11y=x

divide by 5 on both sides

<h2>\frac{z+11y}{5}</h2>
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What is the expression for the area of this rectangle?
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3 years ago
Let X1, · · · , Xn be independent identically distributed random variables with probability density function f(x) = 1 2σ exp − |
Igoryamba

Answer:

σˆ =

sPn

i=1 X2

i

2n

Step-by-step explanation:

To obtain, the maximum likelihood ratio, we use the following method.

l(σ) = Xn

i=1 "

− log 2 − log σ −

|Xi

|

σ

#

Let the derivative with respect to θ be zero:

l

0

(σ) = Xn

i=1 "

−

1

σ

+

|Xi

|

σ

2

#

= −

n

σ

+

Pn

i=1 |Xi

|

σ

2

= 0

and this gives us the MLE for σ as

σˆ =

Pn

i=1 |Xi

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n

Again this is different from the method of moment estimation which is

σˆ =

sPn

i=1 X2

i

2n

As our answer

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3 years ago
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