Step-by-step explanation:
x=width of pool
2x=length of pool
the dimensions of the rectangle forming the walkway and the pool are x+4 and 2x+4
the area of this rectangle minus the area of the pool is 196 square feet
(2x+4)(x+4)-(x)(2x)=196
2x^2+4x+8x+16-2x^2=196
combine similar terms
12x+16=196
12x=196-16
12x=180
x=180/12
x=15 feet is the width of the pool
check: 34*19-30*15=196
646-450=196
196=196
Answer:
Step-by-step explanation:
a²+b² = c² c is always the longest line thats opposite to the 90 degree angle
for 1
15² + b² = 17²
b² = 17² - 15²
b = √(17² - 15²)
b= 8
Answer:
Step-by-step explanation:
If we plot both the vertex and the directrix, we see that the parabola opens to the right. We know this because of the fact that the directrix is a vertical line. Because the vertex is to the right of the directrix and a parabola always opens away from the directrix, we know this is of the form
h and k are the coordinates of the vertex which we are given. Our h = 10 and our k = 0. P is defined as the distance between the vertex and the directrix, so our p = 2. Filling in the equation with all of that gives us
and
and
so
Not sure what form you need it in, work form or standard form.
26 minutes for each load.
For 3 loads ... 26 + 26 + 26 = (3 x 26) = 78 minutes = 1 hour 18 minutes.