Answer:
32 yd^2
Step-by-step explanation:
Ignore rounded approximations (i.e. 2.66, 1.33). For all calculations, use fractions and EXACT values.
This prism has 6 surfaces:
- Front: 3 x 2.66 = 8
- Back: 3 x 2.66 = 8
- Top: 3 x 1.33 = 4
- Bottom: 3 x 1.33 = 4
- Side: 1.33 x 2.66 = 4
- Side: 1.33 x 2.66 = 4
Total SA: 8(2) + 4(4) = <u>32 yd^2</u>
Answer:
9 years
Step-by-step explanation:
A new car is purchased for 23700 dollars. The value of the car depreciates at 13% per year. To the nearest year, how long will it be until the value of the car is 8000 dollars
Answer:
1) (x + 12)²+(y+6)²= 28
comparing above equation with(x-h)²+(y-k)²=r²
we get
r=√28
h=-12
k=-6
;.centre=(-12,-6)
radius =√28 units
2) x²+(y+7)²=15
comparing above equation with(x-h)²+(y-k)²=r²
we get
r=√15
h=0
k=-7
;.centre=(0,-7)
radius=√15 units
3) (x + 4)²+(y - 1)² = 4
comparing above equation with(x-h)²+(y-k)²=r²
we get
r=√4=2units
h=-4
k=1
;.centre=(-4,1)
radius=√2units
4) (x+3)²+(y-1)²= 8
comparing above equation with(x-h)²+(y-k)²=r²
we get
r=√8=2√2units
h=-3
k=1
;.centre=(-3,1)
radius=2√2units
To find the average you add the two numbers together and divide it by two. answer being 59.5
