9514 1404 393
Answer:
A. 2
Step-by-step explanation:
When you don't know if a number like 256 is a power of anything, it can work reasonably well to start by simply dividing by the factors you know.
- 256/2 = 128
- 128/2 = 64
- 64/2 = 32
- 32/2 = 16
- 16 = 2^4, so 256 = 2^4 · 2 · 2 · 2 · 2 = 2^8
The 8th root of 2^8 is 2, choice A.
Answer:
He is reasonable to an extent, but he is not. He can saw 8 posts with the given materials.
Step-by-step explanation:
To make 9 posts. He would need 108 inches of material. He can only make 8 posts with the materials he has. With the remainder of the material he could possibly make 6/10ths of a post.
Simplify both sides of the equation.
<span><span>15<span>(<span><span>62x</span>+7</span>)</span></span>=<span>38<span>(<span><span>24x</span>+3</span>)
</span></span></span><span>Simplify:
</span><span><span><span><span>(15)</span><span>(<span>62x</span>)</span></span>+<span><span>(15)</span><span>(7)</span></span></span>=<span><span><span>(38)</span><span>(<span>24x</span>)</span></span>+<span><span>(38)</span><span>(3)</span></span></span></span>(Distribute)
<span><span><span>930x</span>+105</span>=<span><span>912x</span>+114
</span></span>Subtract 912x from both sides.
<span><span><span><span>930x</span>+105</span>−<span>912x</span></span>=<span><span><span>912x</span>+114</span>−<span>912x
</span></span></span><span><span><span>18x</span>+105</span>=114
</span>Subtract 105 from both sides.
<span><span><span><span>18x</span>+105</span>−105</span>=<span>114−105
</span></span><span><span>18x</span>=9
</span>Divide both sides by 18.
<span><span><span><span><span>18x/</span>18</span></span></span>=<span><span><span>9/18
</span></span></span></span><span>x=<span><span><span>1/2
</span></span></span></span>Answer:
<span>x=<span><span>1/<span>2</span></span></span></span>
Answer:
0.64
Step-by-step explanation: