Answer:
x = 5/f-4
Step-by-step explanation:
Answer:
A. Independent samples
Step-by-step explanation:
This experiment is comparing the results between two independent samples. Paired samples consist of data for which each point in one sample would be paired to a specific data point in another sample. In the present study, there are no naturally occurring pairs since only the proportions, for the whole sample, of students with colds were compared. Therefore, the answer is:
A. Independent samples
.
The percent increase from the original cost of the entertainment system to the cost of the entertainment system using the payment plan is 12%.
<u>Step-by-step explanation</u>:
- The original cost of entertainment system = $500
- The cost using payment plan= $125+ ($72.50
6) - cost by payment plan ⇒ 125+ 435 = $560
Percentage increase = (higher value - lower value/ lower value) 100
⇒ ((560-500)/500) 100
⇒ (60/500) 100
⇒ 0.12 100
⇒ 12%
Answer:
x ≈ 2.76
Step-by-step explanation:
Using the tangent ratio in the right triangle
tan78° = 
= 
= 
( multiply both sides by x )
x × tan78° = 13 ( divide both sides by tan78° )
x = 
≈ 2.76 ( to 2 dec. places )
The equation for a circle with a center (-2, 8) and a radius of 9 will be (x + 2)² + (y − 8)² = 81.
<h3>What is an equation of a circle?</h3>
A circle can be characterized by its center's location and its radius's length.
Let the center of the considered circle be at the (h,k) coordinate.
Let the radius of the circle be 'r' units.
Then, the equation of that circle would be:
(x - h)² + (y - k)² = r²
Write an equation for a circle with a center (-2, 8) and a radius of 9.
Then the equation will be
(x + 2)² + (y − 8)² = 9²
(x + 2)² + (y − 8)² = 81
Learn more about the equation of a circle here:
brainly.com/question/10165274
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