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prithy
15.07.2019 •
Mathematics
Bao you is completeing the square to solve equation x^2-x-3=0 what should her first step be?
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Ответ:
Her first step should be to factor the equation by splitting down the middle
Hope this helps!
Ответ:
isolating the constant, –3
Step-by-step explanation:
Ответ:
Option C -![128 + 8.50x + 9.50y + 10z](/tpl/images/0475/6179/99aa4.png)
Step-by-step explanation:
Given : The Jones family plans a trip to the amusement park a purchase a family package for $128.00. They also want to buy lunch and souvenir cups. The chicken platter costs $8.50 each and the burger platter costs $9.50 each. The souvenir cups each cost $10.00
To find : Which of the following algebraic expressions can be used to describe the amount of money the Jones family will spend, before sales tax, based on the number of each meal and souvenir cups purchased?
Solution :
Let x represent the number of chicken platters.
Let y represents the number of burger platters.
Let z represent the number of souvenir cups.
A family package cost is $128.00.
The chicken platter costs $8.50 each
The cost of x chicken platter =![8.50x](/tpl/images/0475/6179/130f7.png)
The burger platter costs $9.50 each.
The cost of y burger platter =![9.50y](/tpl/images/0475/6179/ec084.png)
The souvenir cups each cost $10.00
The cost of z souvenir cups =![10z](/tpl/images/0475/6179/45e11.png)
Therefore, Total they spend is![128 + 8.50x + 9.50y + 10z](/tpl/images/0475/6179/99aa4.png)
Hence, Option C is correct.