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SpyIntel [72]
3 years ago
14

Jacki evaluated the expression below.

Mathematics
2 answers:
lbvjy [14]3 years ago
7 0

Answer:

C Jack did not subtract 12 from 8 correctly

Step-by-step explanation:

2^3(3-1)+4(8-12)=2^3(2)+4(-4)

it should be -4, not +4

Minchanka [31]3 years ago
5 0
Jackie didn’t subtract 12 from 8 right, I think
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PLS HELP! I NEED TO FIND THE SURFACE AREA OF THIS CYLINDER!
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Exact Surface Area = 378pi

Approximate Surface Area = 1186.92

The approximate surface area uses pi = 3.14

The units are cm^2 or "square cm".

=========================================================

Work Shown:

SA = surface area of cylinder

SA = 2*pi*r^2 + 2*pi*r*h

SA = 2*pi*7^2 + 2*pi*7*20

SA = 2*pi*49 + 2*pi*140

SA = 2*49*pi + 2*140*pi

SA = 98pi + 280pi

SA = 378pi ..... exact surface area

SA = 378*3.14

SA = 1186.92 ..... approximate surface area

----------

Side note: The diameter 14 cuts in half to get the radius r = 7

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Answer:

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triangle abc has the vertices A (0,10) B (4,10) C( -2,4). Find the orthocenter of ABC. A -2,-12 B 2,-12 C 12,-2 D-12,2
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If you have listed the answer choices properly, none is correct. The orthocenter is (-2, 12).

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See the attached figure.

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