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dalvyx [7]
3 years ago
5

How many ways can you make a 3-letter arrangements out of the letters in the word trapezoid?

Mathematics
1 answer:
Fed [463]3 years ago
5 0
You can make 81 words from 3-letter arrangements out of the letters in trapezoid.

3-LETTER ARRANGEMENTS:

Ado, adz, aid, air, ait, ape, apo, apt, are, art, ate, azo, dap, dei, die, dip, dit, doe, dor, dot, ear, eat, era, eta, ire, oar, oat, oda, ode, ope, opt, ora, ore, ort, pad, par, pat, pea, ped, per, pet, pia, pie, pit, pod, poi, pot, pro, rad, rai, rap, rat, red, rei, rep, ret, rai, rid, rip, rod, roe, rot, tad, tae, tao, tap, tar, tea, ted, tie, tip, tod, toe, top, tor, zap, zed, zep, zip, zit, zoa
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Answer:

Answer for #10:

y = 2 \: and \: x = 1

Answer for #1:

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Step-by-step explanation:

In order to solve a simultaneous equation using the substitution method you have to:

Use one of the equation and substitute it into the other equation, in this case equation <em>B</em><em> </em>was substituted into equation <em>A</em><em>.</em>

<em>equ. \: a = (2x - 3y = 7) \\ equ. \: b = (x = 1 - y)</em>

Therefore since x = 1 - y, equation A would be:

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