Answer:
Ted is correct. Maggie made mistakes while trying to isolate x for both equations.
Step-by-step explanation:
For 3x-2=0, in order to move -2 to the left side, Maggie had to add 2 on both sides because -2+2=0. The same problem is seen for x+5=0. Maggie had to subtract 5 on both sides because +5-5=0
First we need to determine the type of progression in the question.That's geometric progression. Because the pattern from one sequence to the others are about multiplying.
Second, determine the ratio of the progressionr = a₂/a₁
r = a₂ ÷ a₁
r = 1/2 ÷ 2
r = 1/2 × 1/2
r = 1/4
Third, determine the formula to know the recursive rulea₂ = a × 1/4
a₂ = 1/4 × a
Fourth, determine a₁. a₁ is the first term of the progressiona₁ = 2
Final answer:Recursive rule
![a_{n} = \frac{1}{4} a_{(n-1)}](https://tex.z-dn.net/?f=%20a_%7Bn%7D%20%3D%20%5Cfrac%7B1%7D%7B4%7D%20a_%7B%28n-1%29%7D%20)
a₁ = 2
Answer:
1.Amy should ask every 10th person leaving the school at the end of the day and Amy should ask the 50 students in her computer lab.
2.Yes,the sample is unbiased and equal to everyone.
3.200
Step-by-step explanation:
Answer:
just guess c its mostly right
Step-by-step explanation:
LORAN follows an hyperbolic path.
The equation of the hyperbola is: ![\mathbf{\frac{x^2}{2500} + \frac{y^2}{1100} = 1}](https://tex.z-dn.net/?f=%5Cmathbf%7B%5Cfrac%7Bx%5E2%7D%7B2500%7D%20%2B%20%5Cfrac%7By%5E2%7D%7B1100%7D%20%3D%201%7D)
The coordinates are given as:
![\mathbf{(x,y) = (-60,0)\ (60,0)}](https://tex.z-dn.net/?f=%5Cmathbf%7B%28x%2Cy%29%20%3D%20%28-60%2C0%29%5C%20%2860%2C0%29%7D)
The center of the hyperbola is
![\mathbf{(h,k) = (0,0)}](https://tex.z-dn.net/?f=%5Cmathbf%7B%28h%2Ck%29%20%3D%20%280%2C0%29%7D)
The distance from the center to the focal points is given as:
![\mathbf{c = 60}](https://tex.z-dn.net/?f=%5Cmathbf%7Bc%20%3D%2060%7D)
Square both sides
![\mathbf{c^2 = 3600}](https://tex.z-dn.net/?f=%5Cmathbf%7Bc%5E2%20%3D%203600%7D)
The distance from the receiver to the transmitters is given as:
![\mathbf{2a = 100}](https://tex.z-dn.net/?f=%5Cmathbf%7B2a%20%3D%20100%7D)
Divide both sides by 2
![\mathbf{a = 50}](https://tex.z-dn.net/?f=%5Cmathbf%7Ba%20%3D%2050%7D)
Square both sides
![\mathbf{a^2 = 2500}](https://tex.z-dn.net/?f=%5Cmathbf%7Ba%5E2%20%3D%202500%7D)
We have:
![\mathbf{b^2 = c^2 - a^2}](https://tex.z-dn.net/?f=%5Cmathbf%7Bb%5E2%20%3D%20c%5E2%20-%20a%5E2%7D)
This gives
![\mathbf{b^2 = 3600 - 2500}](https://tex.z-dn.net/?f=%5Cmathbf%7Bb%5E2%20%3D%203600%20-%202500%7D)
The equation of an hyperbola is:
![\mathbf{\frac{(x - h)^2}{a^2} + \frac{(y - k)^2}{b^2} = 1}](https://tex.z-dn.net/?f=%5Cmathbf%7B%5Cfrac%7B%28x%20-%20h%29%5E2%7D%7Ba%5E2%7D%20%2B%20%5Cfrac%7B%28y%20-%20k%29%5E2%7D%7Bb%5E2%7D%20%3D%201%7D)
So, we have:
![\mathbf{\frac{(x - 0)^2}{2500} + \frac{(y - 0)^2}{1100} = 1}](https://tex.z-dn.net/?f=%5Cmathbf%7B%5Cfrac%7B%28x%20-%200%29%5E2%7D%7B2500%7D%20%2B%20%5Cfrac%7B%28y%20-%200%29%5E2%7D%7B1100%7D%20%3D%201%7D)
![\mathbf{\frac{x^2}{2500} + \frac{y^2}{1100} = 1}](https://tex.z-dn.net/?f=%5Cmathbf%7B%5Cfrac%7Bx%5E2%7D%7B2500%7D%20%2B%20%5Cfrac%7By%5E2%7D%7B1100%7D%20%3D%201%7D)
Hence, the equation of the hyperbola is: ![\mathbf{\frac{x^2}{2500} + \frac{y^2}{1100} = 1}](https://tex.z-dn.net/?f=%5Cmathbf%7B%5Cfrac%7Bx%5E2%7D%7B2500%7D%20%2B%20%5Cfrac%7By%5E2%7D%7B1100%7D%20%3D%201%7D)
Read more about hyperbolas at:
brainly.com/question/15697124