What are you talking about?
Answer:
12.75w + 25 = 114.25
w = 7
Step-by-step explanation:
since sarah is receiving 12.75 each week for a number of weeks, w (we don't know its value yet) we know that first part of the equation: that 12.75 is the coefficient next to w. Then we have the extra 25, so we know that adding 12.75w and 25 would give us sarah's total amount, which is 114.25.
to find out what w represents, we have to solve for it. solving for w means isolating it on one side. so, what we can do first is subtract 25 from both sides. that would then make the equation:
12.75w = 89.25
now, we have only one step left to isolating w, and that's to get 12.75 on the other side somehow. since we're multiplying 12.75 with w, and we're applying additive inverse properties, meaning the opposite of what is happening to cancel it out on the side it's in, we would divide 12.75 on both sides. in the left, 12.75 would cancel out, and in the right, we would divide 89.25 by 12.75. the quotient is 7.
now there's nothing left to take out to isolate w, so we have:
w = 7
sarah saved up for 7 weeks.
Rational numbers are Sometimes natural numbers
hope this helps :D
The total surface area of a cylinder with 5cm height and radius 2cm is :
28π cm²
<h3>What is cylinder?</h3>
One of the most fundamental curvilinear geometric shapes, the cylinder has historically been thought of as a three-dimensional solid. Geometrically speaking, it has been referred to as a circle-based prism.
Analysis:
The total surface area of a cylinder is : 2πrh + 2π
where radius = 2cm , Hight = 5cm
Total surface area = 2 x π x 2 x 5 + 2 x π x 2 x 2
= 20π + 8π = 28π cm2
In conclusion, the total surface area of the cylinder is 28π cm2.
To know more about cylinder visit:
brainly.com/question/27795300
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Answer:
2016 square inches
Step-by-step explanation:
Area is length x width. Length is 28. Width is 72. 28 x 72 = 2016
