jorgeb12316

05.05.2020 • 

Mathematics

Brandon drew 4 circles, each with a different diameter, on a piece of paper. For each circle, he laid a piece of string along the outline and then measured the length of the string. His results are shown in the table below.

Circle Measurements

Diameter Length
of String
5 cm 15.7 cm
10 cm 31.4 cm
15 cm 47.1 cm
20 cm 62.8 cm

Brandon wrote the equation, y = kx, to model the relationship between the circumference and the diameter of the circle. Which of the following statements correctly describe what k represents in this equation?
k represents the radius
k represents the unit rate
k represents the area
k represents
A.
II and IV only
B.
I, II, and IV only
C.
I and III only
D.
I and IV only

Ответ:

Gattuso

22.12.2020

Mathematics

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59

Step-by-step explanation:

2a^2 - b^3

a = 4, b = -3

substitute in the given values and solve

2*4^2 - -3^3

remember the order of operations, exponents first

2 * 4^2 - - 3^3

= 2 * 16 - - 27

simplify

2 * 16 - -27

=32 - - 27

= 32 + 27

= 59

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