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enot [183]
3 years ago
6

Find the perimeter. Simplify your answer. 4c+9 70-5 5c+2 5c-3

Mathematics
1 answer:
pickupchik [31]3 years ago
7 0

Answer:

Step-by-step explanation:

Perimeter = 4c + 9 + 7c - 5 + 5c + 2 + 5c - 3

                = 4c +7c + 5c +5c + 9 - 5 + 2  - 3

                 = 21c + 3

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What is the domain and range to this problem?
prohojiy [21]

Answer:

Domain is -5,4       Range is -4, 5

Step-by-step explanation:

Domain is the two ends of the arrows on x

Range is Y

6 0
3 years ago
Volume and surface area are often compared by manufacturers in order to maximize how much of something can go inside of a packag
notka56 [123]
We have no dimensions to work with. I'll pick some and try and comply with the conditions of the problem. 

Suppose you have an object that is 14 by 22 by 27 cm. These three numbers have no common factor so they cannot be reduced any further, which is helpful for this problem.

Find the Volume
Volume

l = 27 cm
w = 14 cm
h = 22 cm

V = 27 *14 * 22
V = 8316 cm^3

Find the surface area
SA = 2*l*w + 2*l*h  + 2*w*h
SA = 2*27*14  +  2*27*22   +  2*14*22
SA = 756 + 1188 + 616
SA = 2558

Just looking at these numbers The surface area is about 1/3 of the volume. I don't think this is always true.


 \frac{SA}{V} =  \frac{2*L*W  + 2*L*H + 2*W*H}{L*W*H} 

Another way to do this is to consider a cube which might give you a more useful result. 

s = L = W = H all three dimensions are equal in a cube.
The volume of a cube is s*s*s = s^3
The surface area of a cube is 2*s*s + 2*s*s + 2s*s = 6s^2

\frac{SA_cube}{V_cube} =  \frac{6s*s}{s*s*s}
\frac{SA}{V} =  \frac{6}{s}

That means whatever the side length, the Surface Area to volume = 6/the side length which is kind of an interesting result.


4 0
3 years ago
How would you graph y = 2x + 3 and its inverse?
Umnica [9.8K]
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for instance if x = 0 , then y = 3

                   if x =  1,  then y = 5
Plot The coordinates of A(90,3) & B(1,5). You need just 2 point to draw a line.

2) The inverse of y=2x+3

a) Switch the x & y ===> x=2y+3

b) subtract 3 from both sides ===> x-3=2y+3-3===> x-3 = 2y

c) divide both sides by 2 ===> (x-3) / 2 =2y / 2 ==> 1/2(x-3)=y

And the inverse function of y = 2x+3 is y= 1/2(x+3)


7 0
3 years ago
Len needs to run at least 3 miles a day to get ready for a cross-country race. One lap of the school track is 400 yards. If len
SSSSS [86.1K]
No because 4 laps around the track is one mile so if he did then he would have only done two and a half miles
5 0
4 years ago
Can someone explain the differences between a rational and irrational number, and a interger
vodomira [7]
Interfere are numbers that can be neagative
Or positive. Rational numbers are numbers that can be put into fractions. Irrational numbers cannot be put into a fraction
6 0
4 years ago
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