Answer:
Step-by-step explanation:
Area of the land A - Length * Width
Given
A = 1 3/4 mi²
Length L = 2 1/3 miles
Required
Width of the property
Substitute into the formula;
A = LW
W = A/L
W = 1 3/4/(2 1/3)
W = 7/4 ÷ 7/3
W = 7/4 × 3/7
W = 3/4 miles
Hence the width of the property is 3/4 miles
Answer: 17.9 km/h
Step-by-step explanation:
Convert 33 minutes and 50 seconds to Hours:
= 33 ⁵⁰/₆₀ minutes
= 33.83 minutes
In hours that would be:
= 33.83 / 60
= 0.56 hours
10,000 meters in kilometers is:
= 10,000 / 1,000
= 10 kilometers
Speed = 10 / 0.56
= 17.9 km/h
The second power is a 8 over three
Answer:
43
57
x
966
374
6
345
86
3445
Step-by-step explanation:
Answer:
A.
Step-by-step explanation:
C and D do not create any x² terms when doing the multiplications. so, they are out.
B stands for (a+b)×(a-b) = a² - b².
so, that would give us a "-4" at the end and is not fitting to the "+4" term at the end of the original expression.
that leaves us with A.
let's verify :
(4x+2i)(4x-2i)
it follows the same rule as B :
(a+b)(a-b) = a² - b²
a = 4x
b = 2i
you remember, i = sqrt(-1).
so, we get
(4x)² - (2i)² = 16x² - 4×(sqrt(-1))² = 16x² - 4×(-1) = 16x²+4
bingo !