Understand that a relationship between<span> two variables,</span>x and y<span>, is </span>proportional<span> if it can be expressed in the form </span>xy<span> = k or </span>y<span> = kx. ... Understand that the graph of a</span>proportional relationship<span> is a line through the origin whose slope is the unit rate (constant of proportionality)</span>
Answer:
y=40-15x
Step-by-step explanation:
Let x represent the number of hours.
We have been given that Dudley travels 30 miles every 2 hours, so distance covered in each hour by Dudley would be:
.
Since Dudley travels 15 km per hour, so distance covered in x hours would be 15x.
We have been given that Dudley wants to cover 40 miles. So we can represent our given information in an equation as:
, where, y represents number of miles he has left to travel, after biking x hours.
When it come to find per hours or per day or anything that mean to find a single amount of time, you have to divide. So 800 divide by 40 is 20 ,
The answer is 20 dollars for one hours. hope this help
Since he has to give 50, and 12.25*p is the amount of money he has to spend (since it's 12.25 per pizza), we have 50-12.25=change
In isosceles triangle ∆ABC,
AC is the base and ADis the angle bisector of ∠A.
If ∠ADB = 110 then <ADC=70 (Linear pair of angles )
Therefore <DAC= 1/2(<DBA) (AD is the bisector of <A.)
<DAC + <DBA =180-70 =110
1/2(<DBA) + <DBA=110
<DBA=220/3 and <DAB=220/6
if <DAB=220/6 then <BAC=220/3
<ABC = 180 -(2x <BAC)= 100/3
Therefore the isosceles , ∆ABC,
<ABC=100/3, <BAC =<BCA=220/3