Write a real world situation that could be represented by the equation shown below y= -10x - 15

1 answer:

3 0

Example (not a very likely example, however):

At 11 pm the temperature is -15 degrees F, and it continues to drop by 10 degrees F every hour.

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Type the correct answer in the box.

AlekseyPX

Answer:

d(x)=-750x^2-3750x-10500

Step-by-step explanation:

The manager of a department store uses the given function to model the monthly opening inventory of down comforters at the store, in dollars, where x represents the number of months from September.

d(x)=-750(x^2-5x-14)

To rewrite this hat reveals the store's opening inventory of down comforters in the month of September, multiply -750 on the bracket, we get

d(x)=-750x^2-3750x-10500

7 0

2 years ago

Elimination Method 7x=3y+45 4x+5y=19 (Show it step by step please!)

Fittoniya [83]

$\left\{\begin{array}{ccc}7x=3y+45&|\text{subtract 3y from both sides}\\4x+5y=19\end{array}\right\\\left\{\begin{array}{ccc}7x-3y=45&|\text{multiply both sides by 5}\\4x+5y=19&|\text{multiply both sides by 3}\end{array}\right\\\underline{+\left\{\begin{array}{ccc}35x-15y=225\\12x+15y=57\end{array}\right}\qquad|\text{add both sides of the equations}\\.\qquad47x=282\qquad\text{divide both sides by 47}\\.\qquad \boxed{x=6}\\\\\text{Put the value of x to the second equation}$

$4(6)+5y=19\\\\24+5y=19\qquad\text{subtract 24 from both sides}\\\\5y=-5\qquad\text{divide both sides by 5}\\\\\boxed{y=-1}\\\\Answer:\ \boxed{x=6\ and\ y=-1}$

8 0

3 years ago

The sphere is centered in the cube. Find an expression for the volume of the cube outside the sphere

Nikolay [14]

Solution -

The sphere is centered in the cube, so diameter of the sphere is equal to the side of the cube. Hence ,the radius of the sphere is half of the length of the side.

If the length of side of the cibe = a , then radius of the sphere is $\frac{a}{2}$