Mathematics, 01.08.2019 03:50 Angeldelissa
Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? multiply the second equation by β4 to get β16x β 4y = β80 multiply the second equation by β1 to get β4x β y = β20 multiply the first equation by 2 to get 4x + 8y = 28 multiply the first equation by β1 to get β2x β 4y = β14
Answers: 1
Mathematics, 21.06.2019 15:00
Which sum or difference identity would you use to verify that cos (180Β° - β
) = -cos β
? a. sin (Ξ± -Ξ²) = sin Ξ± cos Ξ² β cos Ξ± sin Ξ² b. cos (Ξ± -Ξ²) = cos Ξ± cos Ξ² β sin Ξ± sin Ξ² c. cos (Ξ± -Ξ²) = cos Ξ± cos Ξ² + sin Ξ± sin Ξ² d. sin (Ξ± + Ξ²) = sin Ξ± cos Ξ² + cos Ξ± sin Ξ²
Answers: 2
Mathematics, 21.06.2019 15:40
Which of the following represents the zeros of f(x) = 6x3 β 31x2 + 4x + 5? β5, one third , one half 5, β one third , one half 5, one third , β one half 5, one third , one half
Answers: 1
Mathematics, 21.06.2019 18:00
Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50. write an inequality to determine the number of chores, c, janie could do to have enough money to buy the cd.
Answers: 1
Mathematics, 22.06.2019 00:30
The water company charges a residential customer $41 for the first 3,000 gallons of water used and $1 for every 200 gallons used over 3000 gallons. if the water bill was $58 how many gallons of water were usedanswersa 3400 gallonsb 6000 gallonsc 6400 gallons d 7000 gallons
Answers: 2
Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following acti...
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