Akeyboard typically has 46 keys that can be modified and four ways to modify them, shift, ctrl, alt, and no modification. for instance, to type a percent sign, you hold the shift key and type the number 5. ivan has three keyboards with this same configuration set for three alphabets: english, russian, and japanese. assuming ivan only uses no more than one modification key at a time, how many different characters can he type?

step-by-step explanation:

hans did not square the 40-unit side; he merely multiplied it by 2.   incorrect.

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part a: triangles gcb and epb

part b. sides cg and rp are parallel by definition of parallelogram.

angles cgb and e are congruent by being alternate interior angles of parallel lines cut by a transversal. angles gbc and ebp are congruent because they are vertical angles. by aa similarity, the triangles are similar.

part c. since the triangles are similar, the ratios of the lengths of corresponding sides are equal.

calculation of be:

gb/be = cb/bp

(400 ft)/be = 300/200

(400 ft)/be = 3/2

3be = 2 * 400 ft

3be = 800 ft

be = 800/3 ft

calculation of pe:

gc/pe = cb/bp

(350 ft)/pe = 300/200

(350 ft)/pe = 3/2

3pe = 2 * 350 ft

3pe = 700 ft

pe = 700/3 ft

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