Each key on the student calculators is 12 millimeters wide, and each key on the demonstration calculator is 4.8 centimeters wide. if the student calculators are 249 millimeters tall, how tall is the demonstration calculator?

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Each key on the student calculators is 12 millimeters wide, and each key on the demonstration calculator is 4.8 centimeters wide.

Means

When student calculator is 12 millimeters, demonstration calculator= 4.8 cms

When student calculator is 1 millimeter , demonstration calculator

When student calculator is 1 mm , demonstration calculator

So, when student calculator are 249 mm, demostration clculator

Means 99.6 cms

Means demonstration calculator is 99.6 cms tall. : Answer

Hope it will help :)

(2x + 16) + (x) = 180

step-by-step explanation:

given,

abcd is a quadrilateral inscribed in a circle

angle a is labeled x plus 16, (x + 16)

angle b is labeled x degrees, (x)

angle c is labeled 6x minus 4, (6x – 4)

angle d is labeled 2x plus 16, (2x + 16)

what equation can be used to solve for angle b?

we know that the sum of the opposite angles of a simple quadrilateral inscribed in a circle is 180 degrees.

angle b is opposite angle d

therefore, angle b + angle d = 180

(x) + (2x + 16) = 180 

same as (2x + 16) + (x) = 180