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Leviafan [203]
3 years ago
9

A flat rectangular piece of aluminum has a perimeter of 64 inches. The length is 8 inches longer than the width. Find the width.

Mathematics
1 answer:
denpristay [2]3 years ago
7 0

Answer:

w = 12

Step-by-step explanation:

W=48/4

W=12 ANS. FOR THE WIDTH.

L=12+8=20 ANS. FOR THE LENGTH.

PROOF:

2*20+2*12=64

40+24=64

64=64

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Recall the definition of the cross product:

i x i = j x j = k x k = 0

i x j = k

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The cross product is antisymmetric, or anticommutative, meaning that for any  vectors u and v, we have u x v = - (v x u).

It's also distributive, so for any vectors u, v, and w, we have (u + v) x w = (u x w) + (v x w).

Taking all of these properties together, we get

b x a = (6i - j + 2k) x (2i + 2j - 5k)

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b x a = i + 34j + 14k

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3 years ago
Which expression is equivalent to 5(2+7)?<br> A. 2(5+7)<br> B. 2+7(5)<br> C. 5(2)+7<br> D. 5(2)+5(7)
Kipish [7]
Hope this helps but I this helps but I think the answer is D if not then try B
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3 years ago
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A car is driving down I-55 approaching the exit for two cities: Angleton and Bisectorville. Both towns are 3.14 miles to I-55 an
Shtirlitz [24]

Answer:

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i think i help.(sorry if it is not correct)

Step-by-step explanation:

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3 years ago
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In the second image, a reflection just describes a flip over some line, known as the line of reflection. We change the point's signs depending on the line of symmetry we are given when reflecting (in this case, the y axis). Reflecting the trapezoid over the y axis will result in a change of signs of the x values of the given points. Point A of the trapezoid is located on coordinate (-2,2), after the reflection, it will be located on point (2,2). Points B will reflect from point (-1,2) to point (1,2). Point C will reflect from (-1,1) to (1,1). Finally, point D will reflect from point (-3,1) to (3,1). After this reflection, we have to perform the same one except only the y values of our coordinates will change because we are reflecting over the x axis. After you graph the trapezoid from the previous reflection, do the same thing by just changing the y values of the coordinates to get your desired image.

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