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grandymaker [24]
3 years ago
13

What is the value of x ???

Mathematics
1 answer:
k0ka [10]3 years ago
6 0

Answer:

D. 2\sqrt {133}

Step-by-step explanation:

{x}^{2}  =  {18}^{2}  + ( {12}^{2}  +  {8}^{2} ) \\  \\  {x}^{2}  = 324 + (144 + 64) \\  \\  {x}^{2}  = 324 + 204 \\  \\  {x}^{2}  = 528 \\  \\ x =  \sqrt{532}  \\  \\ x =  \sqrt{4\times 133}  \\  \\ x = 2\sqrt {133}

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Hello can someone send me some documment for geometry where are the signs explained(Like )
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Answer:

https://revisionmaths.com/gcse-maths-revision/shape-and-space/vectors

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3 0
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What rectangle shows the final image
frozen [14]
Is there an image attached?
6 0
3 years ago
Logx(8x-3)-logx 4=2<br> please help ill give you everything i have !!
Gelneren [198K]
Logx (8x-3) - logx 4 = 2
logx [(8x-3)/4] = 2
x^2=(8x-3)/4
4x^2=4(8x-3)/4
4x^2=8x-3
4x^2-8x+3=8x-3-8x+3
4x^2-8x+3=0
4(4x^2-8x+3=0)
(4^2)(x^2)-8(4x)+12=0
(4x)^2-8(4x)+12=0
(4x-2)(4x-6)=0
2(4x/2-2/2)2(4x/2-6/2)=0
4(2x-1)(2x-3)=0
4(2x-1)(2x-3)/4=0/4
(2x-1)(2x-3)=0
Two options:
1) 2x-1=0
2x-1+1=0+1
2x=1
2x/2=1/2
x=1/2

2) 2x-3=0
2x-3+3=0+3
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Answer: Two solutions: x=1/2 and x=3/2
6 0
3 years ago
GEOMETRY
Katarina [22]
SA = 2(LW + WH + LH)
SA = 2[8(6) + 6(5) + 8(5)]
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5 0
2 years ago
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Brums [2.3K]
Given that the area is equal to twice the perimeter and the dimensions are:
length=4x ft, width=(x+6) ft
the perimeter will be:
P=2(L+W)
P=2(4x+(x+6))
P=2(4x+x+6)
P=2(5x+6)
P=(10x+12)

Area of the rectangle is:
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A=4x²+24x
but:
2P=A
thus
2(10x+12)=4x²+24x
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thus
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x²+x-6=0
x²-2x+3x-6=0
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(x-2)(x+3)=0
thus the answer is:
x=-3 or x=2
thus
length=4x=4*2=8 ft
width=(x+6)=(2+6)=8 ft

4 0
3 years ago
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