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cupoosta [38]
3 years ago
5

The width of a rectangle is 8cm less than it's length. The perimeter of the rectangle is 52 Cm.

Mathematics
1 answer:
weqwewe [10]3 years ago
5 0
52=2w+2l
52=2(l-8)+2l
52=2l-16+2l
52=4l-16
36=4l
l=9

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Which of the objects shown below could be sliced to create hexagonal cross-sections?
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Consider the line y=9x-5.
igomit [66]
Y = 9x - 5...the slope here is 9...a parallel line will have the same slope.

y = mx + b
slope(m) = 9
(5,-4)...x = 5 and y = -4
now we sub and solve for b, the y int
-4 = 9(5) + b
-4 = 45 + b
-4 - 45 = b
-49 = b
so ur parallel line is : y = 9x - 49

y = 9x - 5...slope is 9. A perpendicular line will have a negative reciprocal slope. All that means is " flip " the slope and change the sign. So the slope we need is -1/9.

y = mx + b
slope(m) = -1/9
(5,-4)...x = 5 and y = -4
now we sub and solve for b, the y int
-4 = -1/9(5) + b
-4 = -5/9 + b
-4 + 5/9 = b
-36/9 + 5/9 = b
- 31/9 = b

so ur perpendicular line is : y = -1/9x - 31/9

6 0
3 years ago
51:9 in simplelest form
Svet_ta [14]
the answer should be 17/3
7 0
3 years ago
Simplify the expression 9n+1/4+6y+4n-4y
Varvara68 [4.7K]

Answer: =13n+2y+1/4

Step-by-step explanation: Hope this help :D

Let simplify step by step

9n+1/4+6y+4n-4y

=9n+1/4+6y+4n-4y

combine like terms:

=9n+1/4+6y+4n+-4y =(9n+4n) +(6y+-4y) +(1/4)

=13n+2y+1/4 Hope

5 0
3 years ago
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