Mathematics: Optionsa.6 cmb. 9 cmc. 11cmd. 12.5 cm

Optionsa.6 cmb. 9 cmc. 11cmd. 12.5 cm - id6911125439685, hrijaymadathil

Ответ:

fredericksppeedddf

11.03.2022

Use Pythagorean theorem.

$x^2+4^2=5^2\\\\x^2+16=25\qquad\text{subtract 16 from both sides}\\\\x^2=9\to x=\sqrt9\to x=3\ (cm)\\\\y^2+4^2=7.5^2\\\\y^2+16=56.25\qquad\text{subtract 16 from both sides}\\\\y^2=40.25\to y=\sqrt{40.25}\\\\y\approx6.34\\\\x+y=3+6.34=9.34\approx9\ cm$

B. 9 cm.

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Ответ:

katy3865

19.09.2021

Mathematics

answer b

step-by-step explanation:

since the exponents are negative, you would have to make them positive by flipping them over the line. then you would have to simplify the exponents by subtracting.

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Optionsa.6 cmb. 9 cmc. 11cmd. 12.5 cm

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