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3 years ago

Which value must be added to the expression x2 + 12x to make it a perfect-square trinomial?

Mathematics

2 answers:

stellarik [79]3 years ago

8 0

Answer:

D) 81

Step-by-step explanation:

Alexxx [7]3 years ago

7 0

Answer:36

When you factor X^2+12x+36 you get a perfect square trinomial which is (x+6)^2

Hope this helps!

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Identify the coefficient and the exponent for each term of 8x ^ 4 - 2x

velikii [3]

Step-by-step explanation:

Given binomial is: $8x^4 - 2x$

$in \: the \: term \: 8 {x}^{4} \\ coefficient = 8 \\ exponent = 4 \\ \\ in \: the \: term \: - 2x \\ coefficient = - 2 \\ exponent = 1$

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3 years ago

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Sergeu [11.5K]

The correct answer is 4> -3

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2 years ago

The base of a pyramid has n sides. Write an EXPRESSION for the number of faces of the pyramid.

ser-zykov [4K]

In general, if the pyramid has 'x' sides, then it will have 'x' lateral faces. Total Number of Faces = Number of Base Faces + Number of Lateral Faces. Total Number of Faces = 2 + x. So the formula is F=x%2B2 where "x" is the number of sides that the pyramid has and "F" is the total number of faces.

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3 years ago

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Bess [88]

The answer should be A

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3 years ago

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What is the area of this figure?

Vladimir79 [104]

Answer:

97 square miles

Step-by-step explanation:

Let us divide this figure into rectangles, each of set dimensions;

$Dimensions of Rectangle A - Height ; 2 mi, Length ; 9 mi\\Area of Rectangle A - Height * Length = 2 mi * 9 mi = 18 square miles,\\\\Dimensions of Rectangle B - Height ; 2 mi + 5 mi = 7 mi, Length ; 5 mi\\Area of Rectangle B - Height * Length = 7 mi * 5 mi = 35 square miles,\\\\Dimensions of Rectangle C - Height ; 4 mi + 5 mi + 2 mi = 11 mi, Length ; 4 mi,\\Area of Rectangle C - Height * Length = 11 mi * 4 mi = 44 square miles,\\\\Area of Figure = 18 + 35 + 44 = 97 square miles$

Solution; 97 square miles

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