algebra

There are cows and chickens in a barn along with a three-legged dog named Tripod. If there are twice as many chickens as cows, how many legs are there in the barn. (Call the number of cows n.) Number of cows = n Number of cows legs = 4n Number of chickens = 2n Number of chicken legs = 2*2n =...

Amelia had n shoes in her closet. How many pair of shoes did she have? 1 pair = 2 shoes, so we have: n/2

The negative of the sum of C and D is equal to the difference of the negative of C and D The negative of the sum of C and D means -1 times the sum of C and D -(C + D) Distribute the negative sign: -C - D the difference of the negative of C and D means we subtract D from negative C -C - D So...

Allen saves $162 a month. Allen saves $43 less each month than Lane. How much will Lane save in 2 years? Calculate Lane's monthly savings: Lane's monthly savings = Allen's monthly savings + 43 (since Allan saves 43 less than Lane) Lane's monthly savings = 162 + 43 Lane's monthly savings = 205...

Z varies jointly as the 4th power of x and the 5th power of y The 4th power of x means we raise x to the power of 4: x^4 The 5th power of y means we raise y to the power of 5: y^5 The phrase varies jointly means we have a constant k such that: z = kx^4y^5

An oil tank contains 220.2 gallons of oil. Whenever the amount of oil drops below 90 gallons, an alarm sounds. If 145.3 gallons are pumped into a delivery truck, how many gallons must be pumped back into the tank in order to shut off the alarm? I'm doing a remedial math course and I need help...