Mathematics: I need help to solve please

I need help to solve please - id9044779, hellp138

Ответ:

wrightdarius78

09.02.2022

Mathematics

x = 8

Step-by-step explanation:

Angle sum property of triangle states that the sum of interior angles of a triangle is 180°.

So,

$\rm \longrightarrow 45 \degree + 80 \degree + (9x - 17) \degree = 180 \degree \\ \\ \rm \longrightarrow 125 + 9x - 17 = 180 \\ \\ \rm \longrightarrow 108 + 9x = 180 \\ \\ \rm \longrightarrow (108 - 108) + 9x = 180 - 108 \\ \\ \rm \longrightarrow 9x = 72 \\ \\ \rm \longrightarrow \dfrac{9}{9} x = \dfrac{72}{9} \\ \\ \rm \longrightarrow x = 8$

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Ответ:

zay65307

17.05.2022

Mathematics

4,524 gallons

Step-by-step explanation:

The volume of any cylinder is

π (radius)² (height) .

The pool's radius is 1/2 its diameter = 8 ft. So its volume is

π (8 ft)² (3 ft)

= π · (64 ft²) · (3 ft)

= π · 192 ft³

= 603.2 ft³ .

(603 ft³) · (7.5 gal / 1 ft³) = 4,524 gallons

Hope this helps :D

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