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Sphinxa [80]
4 years ago
6

Laura is working on an art project she needs a rusty iron nail for her art work so she places a shiny new nail outside in it wet

locations how will the air and water change the nail
Mathematics
2 answers:
posledela4 years ago
6 0
It will make a chemical change that will make the iron rust in contact with oxygen and water.
Katarina [22]4 years ago
5 0
Water is something that leads things to rust. Exposure to air also leads things to rust. Exposure to both of them will completely rust the nail if given time. 
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A rectangular prism has the following dimensions. H=11 meters, L=8 meters, 1 point
katovenus [111]

Answer:

264

Step-by-step explanation:

l*w*h= 8*11*3= 264

7 0
3 years ago
What is the slope of the line through (1,-1) and (5,-7)
tiny-mole [99]

Answer:

  -3/2

Step-by-step explanation:

The slope is the ratio of rise to run, the change in y divided by the change in x. It is often designated by the letter "m".

  m = (change in y)/(change in x) = (-7 -(-1))/(5 -1) = -6/4

  m = -3/2

The slope of the line through the given points is -3/2.

8 0
4 years ago
Magnani flips three coins what is the probability that the first second and third coin will all land the same way either our hea
Pavlova-9 [17]
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it will be 2/8
5 0
4 years ago
If A(−1, 1), B(−4, 5), C(−9, 5), and D(−6, 1) are the vertices of a quadrilateral, do the points form a rhombus? Justify your an
Flura [38]

Answer:

Yes, it is a rhombus because the slope of diagonal segment BD equals 2, the slope of diagonal segment AC equals -1/2, and the diagonals bisect each other.

Step-by-step explanation:

The slope of diagonal BD is ...

  slope BD = (change in y)/(change in x) = (-4/-2) = 2

The slope of diagonal AC is ...

  slope AC = (change in y)/(change in x) = (4/-8) = -1/2

The midpoint of BD is ...

  ((-4, 5) +(-6, 1))/2 = (-10, 6)/2 = (-5, 3)

The midpoint of AC is ...

  ((-1, 1) +(-9, 5))/2 = (-10, 6)/2 = (-5, 3)

so the diagonals bisect each other.

While the third statement is true (both midpoints are the same), that fact alone is not sufficient to allow the figure to be declared a rhombus. The diagonals must also be perpendicular (have slopes whose product is -1). The appropriate answer choice is the <em>second one</em>:

  • Yes, it is a rhombus because the slope of diagonal segment BD equals 2, the slope of diagonal segment AC equals -1/2, and the diagonals bisect each other.
3 0
3 years ago
(-2,1); perpendicular to y= - 2/5x -4<br><br> Help explain step by step?
Fittoniya [83]

Answer:

  y = (5/2)x + 6

Step-by-step explanation:

The given line has a slope (coefficient of x) of -2/5. The perpendicular line will have a slope that is the negative reciprocal of this:

  -1/(-2/5) = 5/2

Since you are given a point you want the line to go through, the point-slope form of the equation of the line is useful. That form for slope m and point (h, k) is ...

  y = m(x -h) +k

For your slope m=5/2 and point (h, k) = (-2, 1), the equation of the line is ...

  y = 5/2(x +2) +1

  y = 5/2x +6 . . . . . eliminate parentheses

8 0
4 years ago
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