5^-1x3^-2=1/5x1/3^2=1/5x1/9=1/(5x9)=1/45
M(x) = 5x + 4 n(x) = 6x - 9
Part 1 (m + n)(x) = 5x + 4 + 6x - 9
= 11x - 5
Part 2 (m * n)(x) = (5x + 4)(6x - 9) = 30x^2 - 21x - 36
Part 3 m[n(x)] = 5(6x - 9) + 4
= 30x - 45 + 4
= 30x - 41
Very simple
? – (20 – 4x – 5x2) = 20 – 7x2, so ? = 20 – 7x2 <span>+ (20 – 4x – 5x2)
</span>? = 20 – 7x2 <span>+ (20 – 4x – 5x2)=20-7x²+20-4x-5x²=40-12x²-4x
</span>the answer is <span>C. 40-4x-12x^2</span>
Answer:
A. No, because not all of the pairs represent the same ratio
Step 1
find the volume of sand
volume of sand=8*20*3------------>Volume of sand=480 in³
Volume of sand in the new terrarium=10*24*h
where
h------------> is the <span>deep in the new terrarium
</span>remember that
the volume of sand is the same
so
10*24*h=480----------> h=480/(10*24)-----------> h=2 in
the answer is 2 in
