3.
a. y=28.4x
b. 4,260 grams in 150 ounces
4. 2b - 11
If an integer is both a square and a cube, it can be of the form:
<span>(<span>a3</span><span>)^2</span></span>
Now,
since a cube can be of the form 7k or 7k+-1(thanks to FoolForMath),
we write
<span><span>a^3</span>=7k</span>
and get the no to be
49k^2
, which is in the form of 7 times something
<span>49<span>k^2</span>=7×(7<span>k^2</span>)</span>
Now put
<span><span>a^3</span>=7k+−1</span>
Square it
and you'll get a number in the form of (7times something +1)
That is the answer exactly
From the question we know that:
the first diagonal = 3 + 3 = 6 units length
the second diagonal = 4 + 4 = 8 units length
The area of a rhombus could be determined using
a = 1/2 × d₁ × d₂
Input the numbers to the formula
a = 1/2 × 6 × 8
a = 1/2 × 48
a = 24
The area is 24 units area
