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artcher [175]
4 years ago
12

Please help me on this problem

Mathematics
1 answer:
Shalnov [3]4 years ago
6 0
If Mr. Sanchez has 16 feet of fencing, the perimeter of his fencing must be 16 feet too.  The perimeter is the sum of all the side lengths; since he has 16 feet of fencing, this is all he can use.

He wants the fencing to be a rectangle.  The area of a rectangle is equal to length times width: A=lw.  The perimeter of a rectangle is equal to the length plus width plus length plus width, or twice the length plus twice the width: P=2l+2w.

We know that the perimeter (P) must equal 16.  We can fill this in: 16=2l+2w.  What are some possible lengths and widths that would fulfill this?  What if l=1?  Then we can fill that in: 16=(2*1)+2w.  2*1=2.  So, 16=2+2w.  Subtract 2 from both sides to get 14=2w.  Then divide both sides by 2: w=7.  This is a possible fencing scenario: the length is 1, and the width is 7.  BUT, we need to get the greatest area possible.  The area of this rectangle is A=lw, which would be A=1*7.  The area of this fenced area would be 7 feet squared.

What if l=2?  Use a similar method.  16=(2*2)+2w.  2*2=4.  16=4+2w.  12=2w.  w=6.  A=lw.  A=2*6=12 ft squared.

l=3: 16=(2*3)+2w.  2*3=10.  16=6+2w.  10=2w.  w=5.  A=3*5=15 sq. ft.

l=4: 16=(2*4)+2w.  2*4=8.  16=8+2w.  8=2w.  w=4.  A=4*4=16 sq ft.

After this, it starts to repeat: if l=5, then w=3, and you get the same area as l=3: 15.  If l=6, w=2, and A=12.  If l=7, w=1, and A=7.  l=8 or w=8 is impossible, because then the other dimension is 0 and you get an area of 0.  You can't have any dimensions above 8, either, or you will get a perimeter greater than 16--and then your other dimension would be negative, which is impossible in length.

So the possible areas are 7, 12, 15, and 16.  What's the greatest area? 16.
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PLSSSSSSSSSS HELPPPPPP MEEEEEEE, WILL RATE YOU BRAINLIEST!!!!!!!!!!!!!!
Artemon [7]
The lateral area of the prism is given by:
LA=[area of the two triangles]+[area of the lateral rectangles]
hypotenuse of the triangle will be given by Pythagorean:
c^2=a^2+b^2
c^2=6^2+4^2
c^2=52
c=sqrt52
c=7.211'
thus the lateral area will be:
L.A=2[1/2*4*6]+[6*8]+[8*7.211]
L.A=24+48+57.69
L.A=129.69 in^2

The total are will be given by:
T.A=L.A+base area
base area=length*width
=4*8
=32 in^2
thus;
T.A=32+129.69
T.A=161.69 in^2

Hope this helps:) plz mark brainiest i would really apperciate it
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5 0
3 years ago
4+5(p-1) how to expand brackets and then simplify
Valentin [98]

Step-by-step explanation:

these are multiplications.

you could also write

4 + 5×(p - 1)

now, we need to calculate the contents of brackets (if we can), then do the multiplications and divisions, before we can do the then remaining additions and subtractions.

if we cannot do a calculation directly (because there is a variable involved), we need to do and document the single steps for the individual parts involved.

so,

4 + 5×(p - 1) = 4 + 5×p + 5×-1 = 4 + 5p - 5 = 5p - 1

remember, a multiplication of 2 expressions is done by multiplying every term of one expression with every term of the other expression and adding the results up (by considering their individual signs, of course).

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What are the solutions of 12 - x2 = 0?
tester [92]

Answer:

±2 sqrt(3) =x

Step-by-step explanation:

12 - x^2 = 0

Add x^2 to each side

12 - x^2 + x^2 = x^2

12 = x^2

Take the square root of each side

±sqrt(12) = sqrt(x^2)

±sqrt(4*3) = sqrt(x^2)

±sqrt(4) sqrt(3) = x

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3 0
3 years ago
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A case of 24 tennis balls weighs 3 pounds. How much would a shipment of 2560 tennis balls weigh? Please write
kolbaska11 [484]

The weight of a shipment of 2560 balls weighs 320 pounds.

<h3>How much would a shipment of 2560 tennis balls weigh?</h3>

We know that 24 tennis balls weigh 3 pounds. Then the weight of a single tennis ball is:

W = (3 lb)/(24 balls) = (1/8) pounds per ball.

To get the weight of 2560 tennis balls, we just need to multiply the number of tennis balls by the weight of a single ball, then we get:

Total weight = 2560*(1/8) pounds per ball = 320 pounds.

The weight of a shipment of 2560 balls weighs 320 pounds.

If you want to learn more about weight:

brainly.com/question/25973294

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