3a^2+5a-2.
To do this problem would require a method called FOIL. If you are not familiar this means First Outside Inside Last. You multiply the First terms, 3a and a, which results in 3*a*a or 3a^2. Next you multiply the Outside terms, a and -1, which results in -a. Next multiply the Inside terms, 2 and 3a, to result in 6a. Finally multiply the Last terms, 2 and -1, which gives us -2. If we put all these terms together we get 3a^2 -a +6a -2 which we can then simplify to 3a^2+5a-2
To complete the 100% of (the job) washing, Roland needed 4 Hours & Sam, 3 hour,
Mind you 100% = 1
Find for each one the (job) achieved in 1 hour:
Roland achieved 1/4 & Sam 1/3 each one in 1 hour.
In one hours both will achieve 1/4+1/3 =7/12
So they will complete 7/12 (of the job) in 1 hour & for a time = t they will complete 100% (or 1) of the job, that is 1/t =7/12 & t=12/7 =1.71 hour
<h2>Answer :</h2>
A wheel is a circle.
Given diameter of wheel = 2.8 m
Then radius of the wheel = 2.8/2 = 1.4 m
Now we know that , circumference of circle =
<h3>Then, </h3>
Circumference of wheel = 2 × 22/7 × 1.4
Circumference of wheel = 8.8 m
<u>From the above we can conclude that ;</u>
1 revolution = 8.8 m
x revolution = 484 km = 484000 m
<h3>Thus, </h3>
<h3>Therefore, total of 55,000 revolutions are made by the wheel.</h3>
Your formula is right but you must have plugged it in wrong.
Y= 1/10 x
X is your distance, so plug in 85 with x
Y= 1/10 85
One- tenth as a decimal equals 0.1. So 0.1 times 85 will equal 8.5
(a) a rectangular prism
each one has dimensions l = 2.4 ,w = 1.2 / 3 = 0.4 and h = 1.8 / 3 = 0.6 m
(b) total volume of concrete needed is 6 * 2.4 * 0.4 * 0.6 = 3.456 m^3
