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2 years ago

Solve the equation. +8+3x=X-6 Ox=-18 Ox=-14 Ox=2 Ox=4

Mathematics

1 answer:

professor190 [17]2 years ago

7 0

Answer:

x=-7

Step-by-step explanation:

$8+3x=x-6\\\\8+3x+6=x-6+6\\\\8+3x+6=x+0\\\\(8+6)+3x=x\\\\14+3x=x\\\\14+3x-3x=x-3x\\\\14+0=x-3x\\\\14=(1-3)x\\\\14=-2x\\\\\frac{1}{2}(14)=\frac{1}{2}(-2x)\\\\7=-x\\\\-(7)=-(-x)\\\\-7=x\\\\x=-7$

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Mashcka [7]

Step-by-step explanation:

x=1.25y

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2 years ago

A square pyramid has a base length of 4 inches. The height of each triangular face is 12 inches. What is the surface area of the

Wittaler [7]

Answer:

The surface area of the given pyramid is 112 $inches^{2}$ .

Step-by-step explanation:

Base length of the pyramid = 4 inches

Area of the base = $length^{2}$

= $4^{2}$

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= 24 $inches^{2}$

Area of all its four triangular surfaces = 4 x 24

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surface area of the pyramid = sum of areas of all its surfaces

= 16 + 96

= 112 $inches^{2}$

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2 years ago

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Mandarinka [93]

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