2n - 7 × 1 = 15 × 3
2n - 7 = 45
2n = 45 + 7
2n = 52
n = 26
Have a nice days.........
Graph y = x^2 - 4x + 1 on your paper and find the vertex.
2 answers:
Answer:
Step-by-step explanation:
Here is a graph that came from Desmos which is a computer program that you can download. There is no cost and you can use it to graph questions that you are given. It least it will tell you what points you should plot.
The two roots are pretty exact to the hundredth place which Desmos will accurately calculate. The vertex is whole numbers which helps.
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2n - 7 × 1 = 15 × 3
2n - 7 = 45
2n = 45 + 7
2n = 52
n = 26
Have a nice days.........
Hello,
What do you think of ?
It is 1
and what do you think of ?
it is 1
and the solution of 1 = 1 ?
There is an infinity of solutions as 1 = 1 is always true.
thanks
The earth is 40000 kilometers around. There is no need to round off because the circumference already contains significant figures.
How do I calculate a circle's circumference?
A circle's diameter is multiplied by to determine its circumference (pi). You can also determine the circumference by multiplying 2radius by pi (=3.14).
Given: theta angle (central) = 7.2°; arc length S = 800 km
This indicates that an 800 km long arc is extending a circle with a 7.2° center angle ( earth in this case).
By definition, "An arc's length is a portion of a circle's diameter."
Therefore, we must first establish what percentage of the circle the specified arc length represents.
360° is a complete circle.
Thus, the fraction equals 7.2°/360°, or 1/50.
As a result, the stated arc length (800km) with a 7.2° central angle is 1/50th of the entire circle.
Thus, the whole circumference is 800 x 50, or 40000 km.
Alternately, you can calculate circumference using the formula below:
360° center angle x arc length as the circumference (theta)
Values substituted: circumference 800 = 360° 7.2°
circumference = 360°, 800°, and 7.2°, or 40000 kilometers
Therefore, the earth is 40000 kilometers around. There is no need to round off because the circumference already contains significant figures.
Learn more about Circumference
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Answer:
3
Step-by-step explanation:
The x-coordinate of the accident is a random variable of uniform distribution with range [-1.5,1.5]. The same can be said for the y-coordinate. However, |x| and |y| are also uniform variables with range [0,1.5], since we still have the same probability on every pair of intervals with the same lenght.
Note that |X| and |Y| are independent with each other, therefore E(|x|+|y|) = E(|x|) + E(|y|) = 2*E(|x|). The last equality holds because both x and y are identically distributed, then so are |x| and |y|.
E(|x|) =
Therefore, E(|x| + |y|) = 2 * 3/2 = 3.
I hope that works for you!