Answer:
(0,-2) = No
(-5,0) = Yes
(8,0) = Yes
(-9,-6) = No
Step-by-step explanation:
It says "solution to y = 0" so then look at the y-axis which is the second number in parenthesis.
Ex: (0, -2), y is -2 and x is 0.
Just make sure the second number is equal to 0, if not, then that is not the solution.
X of 20% = y
x - y = 75
x = total amount
y = discounted amount
x * 20/100 = y
x * 0.2 = y
replace y with 0.2x in other equation
x - y = 75
1x - 0.2x = 75
0.80x = 75
x = 75/.8
x = 93.75
Check:
93.75 * 20/100 = 18.75
93.75 - 18.75 = 75
x = 93.75
y = 18.75
Answer: Total amount without discount is $93.75
//BTW not sure about this, but kind of make sense
Answer:
Between 21 years and 75 years
Step-by-step explanation:
Given that a real estate company is interested in the ages of home buyers. They examined the ages of thousands of home buyers and found that the mean age was 48 years old, with a standard deviation of 9 years.
X the ages of home buyers is N(48, 9)
a) 
Hence using Cheby chev inequality
b) 
c) Using normal distribution we have
d) z value is 2.97
Hence x lies between
Between 21 years and 75 years
Answer:
66
Step-by-step explanation:
Angle 2 and 4 are supplementary, so if angle 4 is 123, then 180-123=57.
So angle 2 is 57.
Then, if angle 2 and 3 are 57 and we know that all angles of a triangle have to add up to 180, then:
57+57+angle 1=180
114+ angle 1=180
angle 1= 66
Answer:
I am going to give this to someone and see if they can help!
Step-by-step explanation:
