D 11 1/4 because trust me
Answer:
X=20
Step-by-step explanation:
The 3 angles all add up to 180º because they are a straight line.
3x + 80 + 2x = 180
5x + 80 = 180
5x + (80-80) = 180-80
5x = 100
5x/5 = 100/5
X=20
Hope this helps!
Answer:
d) none of the above
Step-by-step explanation:
correct me if wrong .
Let x = the number of hours since 5 a.m.
Let y = temperature, °F
Let the total temperature change be modeled by the expression
y = ax + b
At 5 a.m., x = 0 and y = -9.4°F. Therefore
b = -9.4
When x = 6 hours, y = 2.8°F. Therefore
6a + b = 2.8
6a - 9.4 = 2.8
6a = 12.2
a = 2.0333
The expression is
y = 2.0333x - 9.4
Answer:
y = 2.0333x - 9.4
where
x = hours since 5 a.m.
y = temperature, °F
The slope of the equation is calculated as:
Where 
is the height of the upper part of the slope and 
is the height of the low er part.
So, the equation of the line is:
With this equation we can find the height of Alberto after having passed 10 sec.
After 10 seconds Alberto is 350 feet from the bottom of the slope.
Alberto's speed is:
The speed in miles per hour is:
