Answer: The tv had dropped 20%
Step-by-step explanation: $160 is 80% of $200. So 100%- 80%= 20%
The answer is B. Y= (2/3)X - 3
Answer:
s= 65
Step-by-step explanation:
The given quation s = 20h + 10
h= number of hours
Where h= 2.75 hours
If we substitute h into given model equation, we have
s = 20(2.75)+ 10
s=55 +10
s= 65
Hence, her score is 65
The intersection point is only one. Then the equation of the line is tangent to the circle at point (1, -2).
<h3>What is a circle?</h3>
It is a locus of a point drawn an equidistant from the center. The distance from the center to the circumference is called the radius of the circle.
Prove algebraically that the straight line with equation x = 2y + 5 is a tangent to the circle with equation x² + y² = 5.
x = 2y + 5 ...1
x² + y² = 5 ...2
If the intersection of the point of the circle and line is one. Then the line is tangent to the circle.
Then from equations 1 and 2, we have
(2y + 5)² + y² = 5
4y² + 25 + 20y + y² - 5 = 0
5y² + 20y + 20 = 0
5y² + 10y + 10y + 20 = 0
5y (y + 2) + 10(y + 2) = 0
(5y + 10)(y + 2) = 0
y = -2, -2
Then the value of y is unique then the value of x will be unique.
The value of x will be
x = 2(-2) + 5
x = -4 + 5
x = 1
The intersection point is only one. Then the equation of the line is tangent to the circle at point (1, -2).
More about the circle link is given below.
brainly.com/question/11833983
#SPJ1
Answer:
Mean-17
Median-3
Mode-3
Range-47
Greatest Value-47
Least Value-0
Step-by-step explanation:
Mean= Add every number up then divide by how many numbers there are
Median= It has an even number in total when ordered from least to greatest. So take the two middle numbers together and divide them by 2.
Mode= The number that occurs more often
Range= The difference between the highest and the lowest number.
47-0=47
Greatest and lowest value= the highest and lowest number in a data set.
