Answer:
Step-by-step explanation:
<u>Given</u>
<u>This is symmetrical for x and y, so</u>
- y#x = 1/(1/y + 1/x) is same as above
<u>If x#y = 7, then:</u>
- 7 = 1/(1/x + 1/y)
- 1/(1/7) = 1/(1/x + 1/y)
- 1/7 = 1/x + 1/y
<u>Possible value of x is 14, then y = 14 as well:</u>
- 1/7 = 1/14 + 1/14
- 1/7 = 2/14
- 1/7 = 1/7
Correct choice is A
y=8(x^2 + 4x + 4) +17 + -32
Simplify:
y = 8(x^2 + 4x + 4) + 15
Use distributive property:
y = 8x^2 + 32x +32 - 15
Simplify:
y = 8x^2 + 32x +17
Complete the square using form ax^2+bx+c:
a = 8, b = 32, c = 17
vertex form = a(x+d)^2+e
d = b/2a and e = c-b^2/4a
d = 32/2*8 = 32/16 = 2
e = 17 - 32^2/4*8 = 17-1024/32 = 17-32 = -15
Vertex form = y = 8(x+2)^2 + -15
Answer:
£58,800
Step-by-step explanation:
The answer can be calculated using
FV=p(1+r/n)^nt
P=£50,000
r=2%=0.02
n=12
t=2009 to 2017=8 years
FV=p(1+r/n)^nt
=50,000(1+0.02/12)^12*8
=50,000(1+0.0017)^96
=50,000(1.0017)^96
=50,000(1.1771)
=58,855
FV=58,855
To the nearest £100=£58,800
If 281 gallons go thru in 1 hr......then in 94 hrs, (94 * 281) = 26414 gallons go through