The sales of vacuums and dusters at a store are related by the equation 0.8x2+5xy+5y2=6960.8, where x is the number of vacuums and y is the number of dusters sold.

Step 2 of 2: Find dydx if x=24 and y=26. Enter the exact answer or round to the nearest thousandth.

the answer is 5636.7

constants mean the stopped points or the points on a graph that nothing is changing, hope this

step-by-step explanation:

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500