Mathematics, 22.01.2021 02:00 amandajennings01
A student is deriving the quadratic formula. Her first two steps are shown.
Step 1: -c=ax^2+bx
Step 2: -c=a(x^2+b/ax)
Which best explains or justifies step 2?
A) division property of equality
B) factoring the binomial
C) completing the square
D) subtraction property of equality
Answers: 3
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A23 – year – old male buys 100/300/100 liability insurance, collision insurance with a $100 deductible, and comprehensive insurance with a $250 deductible? what is his total annual premium? (a) $1142.00 (b) $1765.45 (c) $1770.10 (d) $1785.25
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Paula makes stained-glass windows and sells them to boutique stores. if her costs total $12,000 per year plus $4 per window for the frame. how many windows must she produce to earn a profit of at least $48,000 in one year if she sells the windows for $28 each? 1. define a variable for the situation. 2. write an inequality that represents her profit. note: revenue is money coming in. cost is money going out. profit is the difference between the revenue and the cost. in other words: revenue - costs profit 3.using words, describe how many windows she must sell to have a profit of at least $48,000.
Answers: 2
A student is deriving the quadratic formula. Her first two steps are shown.
Step 1: -c=ax^2+bx
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