Answer:I don’t write English you should translate
Áp dụng tính chất của đường trung bình ta có:
20+x=2.(2x+22)
20+x=4x+44
X-4.x=44-20
-3.x=24
X=24/-3x=-8
Trong độ dài ko có độ âm nên tất cả đại lượng hình học đều mang dấu (+) vì vậy kết quả cuối cùng sẽ là 8
Step-by-step explanation:
<u><em>Answer:</em></u>
original price of pants = $25
<u><em>Explanation:</em></u>
<u>First, let's calculate the price of shorts after discount:</u>
Assume that the price of shorts after the discount is x
Total payment = price of shorts + taxes
<u>We know that:</u>
total payment = $21
taxes = 5% = 0.05 of the price
<u>This means that:</u>
21 = x + 0.05x
21 = 1.05x
x = $20
Therefore, <em>the price of the shorts is $20 after the discount</em>
<u>Now, we will get the price of the shorts before the discount:</u>
Assume that the price of shorts before discount is y
<u>We know that:</u>
The discount was 20%
This means that Jennifer paid:
100% - 20% = 80% of the price of the shorts
<u>Therefore:</u>
80% of the price = $20
0.8y = 20
y = $25
This means that <u>price of shorts before discount was $25</u>
Hope this helps :)
If you meant that 1 ball can complete a full rotation in 120 mins then to have a 180 min rotation you need 1.5 balls.
Answer:
The solution is similar to the 2-point form of the equation for a line:
y = (y2 -y1)/(x2 -x1)·x + (y1) -(x1)(y2 -y1)/(x2 -x1)
Step-by-step explanation:
Using the two points, write two equations in the unknowns of the equation of the line.
For example, you can use the equation ...
y = mx + b
Then for the points (x1, y1) and (x2, y2) you have two equations in m and b:
b + (x1)m = (y1)
b + (x2)m = (y2)
The corresponding augmented matrix for this system is ...
![\left[\begin{array}{cc|c}1&x1&y1\\1&x2&y2\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bcc%7Cc%7D1%26x1%26y1%5C%5C1%26x2%26y2%5Cend%7Barray%7D%5Cright%5D)
____
The "b" variable can be eliminated by subtracting the first equation from the second. This puts a 0 in row 2 column 1 of the matrix, per <em>Gaussian Elimination</em>.
0 + (x2 -x1)m = (y2 -y1)
Dividing by the value in row 2 column 2 gives you the value of m:
m = (y2 -y1)/(x2 -x1)
This value can be substituted into either equation to find the value of b.
b = (y1) -(x1)(y2 -y1)/(x2 -x1) . . . . . substituting for m in the first equation
The thousand place
Of 6.589 is 0.009 because after the decimal it goes tenths hundredth then thousands
