4 = 0.25(w - 4.3) Help please?

The base of a rectangle lies on the x-axis, while the upper two vertices lie on the parabola y = 13 − x2. Suppose that the coord

Misha Larkins [42]

Answer:

Area of Rectangle = $26x - 2x^3$

Step-by-step explanation:

Rectangle two vertices lie on x axis ; two vertices lie on parabola $y = 13 - x^2$ .

Supposing coordinates of upper right vertex of rectangle are P = $x , y$

Due to parabola symmetry, width of rectangle is twice the distance horizontal (X) axis distance between Y axis & point P.

Width of rectangle = $2x$

Length of rectangle = $y$ ; $y = 13 - x^2$

Area of Rectangle = Length x Width

= $2x (y)$

= $2x (13 - x^2)$

= $26x - 2x^3$

5 0

3 years ago

A moterboat that ravels with a speen of 20km/hour in still water has traveld 20 km against the current and 180km with the curren

Ira Lisetskai [31]

Answer:

10 kph

Step-by-step explanation:

Find the speed of the current of the river.

20/(20 - c) + 180/(20 + c) = 8

20(20 + c) + 180(20 - c) = 8(400 - c^2)

8c^2 - 160c + 800 = 0

8(c^2 - 20c + 100) = 0

8(c - 10)^2 = 0

c = 10

The speed of the current of the river is 10 km/hour.

5 0

3 years ago

Read 2 more answers

what is the theoretical probability tha a physics teacher will give you homework at the end of a lesson

fomenos

I think 3 but let me know

3 0

3 years ago

The ratio of the measures of the sides of a triangle is 8: 15: 17, and its perimeter is 480 in.. Find the measure of the shortes

lubasha [3.4K]

Answer:

96

Step-by-step explanation:

The ratio of the measure of sides of a triangle are 8:15:17

The perimeter is 480

8x + 15x + 17x= 480

40x= 480

x = 480/40

x = 12

Therefore the measure of the shortest side of the triangle can be calculated as follows

8x

8×12

= 96

6 0

3 years ago

The graph of a line has a slope of 3 and passes through the point (–4, –5).

Alenkinab [10]

Answer

(C) y +5 =3(x+4)

We will use the point-slope formula to solve this problem.

We will use the point-slope formula to solve this problem.(y+5)=3(x+4)

)Explanation:

)Explanation:We can use the point slope formula to solve this problem.

)Explanation:We can use the point slope formula to solve this problem.The point-slope formula states: (y−y1)=m(x−x1)

)Explanation:We can use the point slope formula to solve this problem.The point-slope formula states: (y−y1)=m(x−x1)Where m is the slope and (x1y1) is a point the line passes through.

)Explanation:We can use the point slope formula to solve this problem.The point-slope formula states: (y−y1)=m(x−x1)Where m is the slope and (x1y1) is a point the line passes through.We can substitute the slope and point we were given into this formula to produce the equation we are looking for:

)Explanation:We can use the point slope formula to solve this problem.The point-slope formula states: (y−y1)=m(x−x1)Where m is the slope and (x1y1) is a point the line passes through.We can substitute the slope and point we were given into this formula to produce the equation we are looking for:(y−(−5))=3(x--(4))

=> (y+5)=3(x+4)

3 0

1 year ago