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3 years ago

Can somebody help me with this problem .3.)find the perimeter of the object below.

Mathematics

2 answers:

AysviL [449]3 years ago

7 0

Answer:

189

Step-by-step explanation:

Multiple 15 by 13 and get 195

Multiply 3 by 2 and get 6

Subtract 195 by 6 and get 189

Hope it helps

Alinara [238K]3 years ago

6 0

Answer:

189ft^3

Step-by-step explanation:

well lxw= area

15x13= 195

then subtract the same part that we added

3x2= 6

195-6= 189ft ^3

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3. Is XY Tangent to circle Z? Y 12 X (20 Z 18

Ratling [72]

Answer:

XY is a tangent

Step-by-step explanation:

Given

$XY = 12$

$WY = 20$

$WZ = 8$

Required

Is XY a tangent?

XY is a tangent if:

$WY^2 = XY^2 + WX^2$

Because XY should make a right angle at point X with the circle

Where

$WX = 2 * WZ$

So, we have:

$WY^2 = XY^2 + WX^2$

$WY^2 = XY^2 + (2*WZ)^2$

$WY^2 = XY^2 + (2WZ)^2$

$WY^2 = XY^2 + 4WZ^2$

This gives:

$20^2 = 12^2 + 4*8^2$

$400 = 144 + 256$

$400 = 400$

Yes, XY is a tangent

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2 years ago

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vivado [14]

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8 0

3 years ago

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valkas [14]

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3 years ago

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lisabon 2012 [21]

$\bf _nC_r= \cfrac{n!}{r!(n-r)!}\qquad \qquad _{14}C_2=\cfrac{14!}{2!(14-2)!}$

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3 years ago

Write the vector u as a sum of two orthogonal vectors, one of which is the vector projection of u onto v, projvu. u = <-8, -8

aalyn [17]

Answer:

c.) <-1, 2> + <-2, -1>

Step-by-step explanation:

hope i helped

3 0

3 years ago

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