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2 years ago

Can someone help (will give brainliest)

Mathematics

2 answers:

nikklg [1K]2 years ago

8 0

Answer:

384

Step-by-step explanation:

8 x 6 = 48

48 x 2 = 96

12 x 10 = 120

6 x 12 = 72

8 x 12 = 96

96 + 120 + 72 +96 = 384

Firlakuza [10]2 years ago

8 0

Answer:

Step-by-step explanation:

Remark

Surface area for this = Top + bottom + left side + 2 triangles.

The hypotenuse of the triangle can be found by the Pythagorean Theorem.

a^2 + b^2 = c^2

a = 6

b = 8

c = ?

c^2 = 6^2 + 8^2

c^2 = 36 + 64

c^2 = 100

sqrt(c^2) = sqrt(100)

c = 10

Top

Top = Length * Width

Top = 12 * hypotenuse

Top = 12 * 10

Top = 120

Left side = L*W

L = 12

W = 6

Area = 6 * 12

Area = 72

Two triangles

Two Triangles = 2* (1/2) * 6 * 8 = 48

Base

W = 8

L = 12

Area = L*W

Area = 8 * 12 96

Total area = 96 + 48 + 72+120 = 336

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If y = 6 when x = 8, then value of "x" when y = 9 is equal to 12

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Given that , In a certain function, y varies directly with x

And x = 8 when y = 6,

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Now, from the given information,

$\begin{array}{l}{y \alpha x} \\\\ {y=c x \rightarrow(1)}\end{array}$

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$\begin{array}{l}{\text { Now, substitute } x=8 \text { and } y=6 \text { in }(1)} \\\\ {\rightarrow 8=c(6) \rightarrow c=\frac{8}{6}} \\\\ {\rightarrow c=\frac{4}{3}} \\\\ {\text { Then, }(1) \rightarrow x=\frac{4}{3} y} \\\\ {\text { So, when } y=9} \\\\ {\rightarrow x=\frac{4}{3}(9)} \\\\ {\rightarrow x=4 \times 3} \\\\ {\rightarrow x=12}\end{array}$