Mathematics, 09.01.2020 03:31, michellebreshears451

Alexandra has $2.10 worth of nickels and dimes. she has a total of 27 nickels and dimes all together. determine the number of nickels and dimes that alexandra has by writing and solving a system of equations. i need to use substitution or elimination to solve this.

Answers: 3

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 15:00, emilypzamora11

Select the correct answer from each drop-down menu. rewrite the formula to find voltage. the formula for electrical power (p, in watts) is where v is the voltage in volts and r is the resistance in ohms. for a particular brand of water heater, r is 32 ohms and p is 0.5 watts. the formula to find v is , and the voltage at which the heater operates is volts.

Answers: 1

continue

Mathematics, 21.06.2019 19:30, markel19

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)

Answers: 3

continue

Mathematics, 21.06.2019 20:00, GreatBaconGamer

Solve for x and y a x= 13.3 y= 16.7 b x= 23.3 y= 12.5 c x= 7.5 y= 16.7 d x=7.5 y= 12.5

Answers: 1

continue

Mathematics, 21.06.2019 20:00, tessafargo

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.

Answers: 1

continue

Do you know the correct answer?

Alexandra has $2.10 worth of nickels and dimes. she has a total of 27 nickels and dimes all together...