Please help me with this

A - 5 square root of 3

Step-by-step explanation:

Take one of the triangles and use the pythagorean theorem. A^2 + B^2 = C^2

Hence,

5^2 + x^2 = 10^2

25 +x^2 = 100

25 +x^2 -25 = 100-25

x^2 = 75

Take the square root of both sides. . .

x = 5 square root of 3

first, we define the variables:

x: number of years after 1950

f (x): amount of vinyl sold.

then, with the variables defined, we have:

68594 vinyl records were sold in 1958 > f (8) = 68594

91299 vinyl records were sold in 1961 > f (11) = 91299

38720 vinyl records were sold in 1952 > f (2) = 38720

161743 vinyl records were sold in 1967 > f (17) = 161743

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step-by-step explanation:

10.4 inches

step-by-step explanation:

2x2x2.6