algebra | MathCelebrity Forum

# algebra

1. ### There are cows and chickens in a barn along with a three-legged dog named Tripod. If there are twice

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 =...
2. ### Amelia had n shoes in her closet. How many pair of shoes did she have?

Amelia had n shoes in her closet. How many pair of shoes did she have? 1 pair = 2 shoes, so we have: n/2
3. ### 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 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...
4. ### Allen saves \$162 a month. Allen saves \$43 less each month than Lane. How much will Lane save in 2 ye

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...
5. ### Z varies jointly as the 4th power of x and the 5th power of y

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
6. ### An oil tank contains 220.2 gallons of oil......

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...