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Alexus [3.1K]
3 years ago
5

Oil consumption is increasing at a rate of 1.8% per year. by what factor will oil consumption increase inn 6 years? Use the appr

oximate doubling time formula (rule of 70)
Mathematics
2 answers:
Vesna [10]3 years ago
6 0
\frac{70}{1,8} \approx 38.8  \ \ \ \  \ \rightarrow \ the \ amount \ of \  time \ to \ double \ the \ consumption \\ \\
38,8 - 100\% \\ 6 - x \\
38,8 x = 600\% \\x \approx 15.5\% \\ \\
In \ six \ years \ oil \ consumption \ will \ increase \ by \ approximately \ 15.5\%
boyakko [2]3 years ago
6 0

Answertion:100 it is

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The number of accidents per week at a hazardous intersection varies with mean 2.2 and standard deviation of 1.4. The distributio
posledela

Answer:

Approximate probability that \overline{X} is less than 2 = 0.1515

Step-by-step explanation:

Given -

Mean (\nu ) = 2.2

Standard deviation (\sigma  ) = 1.4

Sample size ( n ) = 52

Let  \overline{X} be the mean of accidents per week at the intersection during one year (52 weeks) .

probability that \overline{X} is less than 2 =

P(\overline{X}< 2)  = P(\frac{\overline{X} - \nu }{\frac{\sigma }{\sqrt{n}}}< \frac{2 - 2.2 }{\frac{1.4}{\sqrt{52}}})   Putting (Z =\frac{\overline{X} - \nu }{\frac{\sigma }{\sqrt{n}}})

                 = P(Z< - 1.03)    ( Using Z table )

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7 0
3 years ago
Solve the equation.
elena55 [62]

Answer:

C: x=-3 or x=4

Step-by-step explanation:

To solve the equation x^2-x-12=0 we need to factor it

We are looking for two numbers that when multiplied give -12 and when added give -x

This means that when factored, the equation would be (x-4)(x+3)=0

Now we can set each of these equal to 0, which means that at

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4 0
4 years ago
The circumference of C is 72 cm. what is the length of arc AB (the minor arc)? The center angle is 45
Nat2105 [25]
The arc length is given by:
2πr(theta)/360
given the circumference is 72 cm, the arc length will be:
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the answer is 9 cm

7 0
3 years ago
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Ratling [72]
The answer is C because (change on y)/(change in x) = (+ or -5)/ 0
8 0
3 years ago
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Please actually ANSWER the question :&gt;
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Answer:

C

Step-by-step explanation:

cx=11

x=11/c

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3 years ago
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