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garik1379 [7]
4 years ago
6

Doreen walks 5 kilometers on arrear ill every day after work. How many meters will Doreen walk on the treadmill in 5 days?

Mathematics
1 answer:
Pepsi [2]4 years ago
6 0
75 meters did he walk everyday por just 5 days
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Does anyone know how to answer this question? Please write your working calculation as well if you do know the answer. Thanks so
krek1111 [17]

Answer:

Mark as brainliest if helped Thanks!

Step-by-step explanation:

funtion is:

y = \frac{x^2 -1}{2x + 1}

therefore \\\frac{dy}{dx}\\ is

\frac{d\frac{x^2 -1}{2x + 1}}{dx}

\frac{\frac{x^2 -1}{2x + 1}}{x}

\frac{x^2 -1}{(2x+1) x}

Now

\int\limits^2_0 {\frac{x^2 +x +1 }{4x^2 +4 + 1} } \, dx

(Calculation of this it too long and it is hard to type on brainly)

here is the answer though....

= 4/5

=0.8

5 0
3 years ago
A new car is purchased for 20000 dollars. The value of the car depreciates at 12. 5% per year. What will the value of the car be
Georgia [21]

To solve the problem we need to know about depreciation.

<h2>Formula of Depreciation</h2>

The formula of depreciation is given as,

A = P(1-r)^t

where,

A is the value of an object after t years of time,

P is the value of the object at the beginning, and

r is the rate of depreciation.

The value of the car after 11 years is $4,603.81.

<h2>Explanation</h2>

Given to us

  • Cost of Car at the beginning, p = $20,000
  • Rate of depreciation, r = 12.5%
  • Time, t = 11 years

<h3>Value of the car after 11 years</h3>

Substituting the values in the formula of depreciation,

A = P(1-r)^t

Value of the car after 11 years = P(1-r)^n

                                                 = \$20,000(1-0.125)^{11}\\\\&#10;= \$20,000\times 0.23\\\\&#10;= \$4,603.822 \approx \$4,603.81

Hence, the value of the car after 11 years is $4,603.81.

Learn more about Depreciation:

brainly.com/question/3023490

8 0
3 years ago
The GPA's at RHS are Normally distributed with a mean of 2.8 and a standard deviation of 0.7. Let G = a random student's GPA.
Alja [10]

The value of  P(G<2.5) is 14.23%.

What is observation?

The active gathering of data from a primary source is observation. Observation of living things makes use of the senses. Using scientific tools to perceive and record data is another way that observation may be used in science.

The $z$-score for this observation of 2.30 is:

Z= (2.3-2.8)/0.7=-1.71

The table shows a value of 0.8577 , and because this z-score is negative, this is the proportion greater than a GPA of 2.30. So the proportion less than 2.30 is 1-0.8577 =0.1423 . Expressing it mathematically we have:

$$\begin{aligned}P(X \leq 2.7) & =P(Z \leq-1.07) \\& =1-P(Z \geq-1.07) \\& =1-P(Z \leq 1.07) \\& =1-0.8577 \\& =0.1423=14.23 \%\end{aligned}$$

To learn more about proportion visit:brainly.com/question/28041973

#SPJ1

7 0
1 year ago
Sara has x dollars and Dina has 15 dollars less than Sara . Together the number
blsea [12.9K]

Answer:

2x-15

Step-by-step explanation:

Sara has x dollars

dina has 15 less which is

x-15

together it will be

x+x-15

=2x-15

5 0
3 years ago
HELP DUE IN 15 MINS!<br><br><br>x = ?? degrees
Elza [17]

Answer:

VWU and FWT are vertical angles.

<u>Their measure is same and:</u>

  • VWU = 1/2(mVU + mFT)
  • x = 1/2(174° + 52°)
  • x = 113°
7 0
3 years ago
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