The perfect cubes less than 1000 are:
<span>1^3 = 1 </span>
<span>2^3 = 8 </span>
<span>3^3 = 27 </span>
<span>4^3 = 64 </span>
<span>5^3 = 125 </span>
<span>6^3 = 216 </span>
<span>7^3 = 343 </span>
<span>8^3 = 512 </span>
<span>9^3 = 729
</span>
so
<span>2^3 = 8 could only be 1 + 1, but this is 2, not 8. </span>
<span>3^3 = 27 could be 1 + 1, 1 + 8 or 8 + 8, but all of these are too small </span>
4^3 = 64 could be 1 + 1, 1 + 8, 1 + 27, 8 + 8, 8 + 27, 27 + 27.
<span> general proof that a^3 + b^3 = c^3 holds for no positive integers
</span>hope it helps
The answer is -7.6.
Start with the innermost grouping:
(-5.2)+(-3.8)-{(-1.2)-[(-0.5)-(-0.7)]}
Subtracting a negative is the same as adding a positive:
(-5.2)+(-3.8)-{(-1.2)-[(-0.5+0.7)]}
(-5.2)+(-3.8)-{(-1.2)-[0.2]}
Now start with the next inner grouping:
(-5.2)+(-3.8)-{-1.4}
Again, subtracting a negative is the same as adding a positive:
(-5.2)+(-3.8)+1.4
Add the first two together:
-9.0+1.4
Adding the last two, we get -7.6.
Answers:
A) 51.3%
B) 55.9%
C) 32.8%
D) 48.8%
Step-by-step explanation:
First, multiply 20 x 25 to find the amount of chairs per section:
20 x 25 = 500
Now, multiply 500 x 4 to find the total amount of chairs for 4 sections:
500 x 4 = 2000
Hope this helps!! :)
