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2 years ago

Sandy builds this shape of four

Mathematics

1 answer:

omeli [17]2 years ago

7 0

Answer:

Triangular Pyramid

30.5 cm^3 (cubic centimeters)

Step-by-step explanation:

a shape made up of four triangles is a triangular pyramid.

Volume of any pyramid is (1/3)*Area of the base*height.

area of the base, or any face, is 17.6 as said in the question, now the height. is 5.2 so we can solve then.

V = 1/3 * 17.6 * 5.2 = 30.5

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The number you are looking for is 995

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3 years ago

Write the equation of the line that passes through the points (2,−8) and (1,7). Put your answer in fully reduced point-slope for

ValentinkaMS [17]

Point-slope form of equation is: $y - 7 = -15(x-1)$

Step-by-step explanation:

Given points are:

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First of all we have to calculate the slope of the line

so,

$m=\frac{y_2-y_1}{x_2-x_1}\\= \frac{7-(-8)}{1-2}\\=\frac{7+8}{-1}\\=\frac{15}{-1}\\= -15$

Point-slope form is given by:

$y-y_1 = m(x-x_1)$

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We can put any one of two given points in the equation to find the final form of point-slope form

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Hence, point-slope form of equation is: $y - 7 = -15(x-1)$

Reducing and simplifying

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Keywords: Point-slope form, equation of line

Learn more about equation of line at:

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3 years ago

1. 9x + 16 = 4x - 19

Genrish500 [490]

Answer:

x=-7

Step-by-step explanation:

9x + 16 = 4x - 19

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9x-4x + 16 = 4x-4x - 19

5x+16 = -19

Subtract 16 from each side

5x+16 -16 = -19-16

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Divide each side by 5

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