a box of 8 marbles has 4 red,2 green and 2 blue marbles. If you select one marble, what is the probability that it is a red or b
1 answer:
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<h2>Inequality</h2><h3>-7x > 21</h3>
<em>Divide both sides by −7. Since −7 is <0, the inequality direction is changed.</em>
<h3>x< 21/-7</h3><em>Divide 21 by −7 to get −3. </em>
<h3>x < −3</h3><em>The image is blurred, so options "A" and "B" are very similar, it may be a mistake. But you can check which one is correct.</em>
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<h2>[See attached image] </h2>
Ah, direct variation/proportion.
That is simply a linear equation with a y-intercept of 0.
So... let's solve this.
Simply put, a direct variation multiplies the x-value by a constant to get the y-value.
Let's take the point
on this graph and solve for the constant of proportionality:
We easily solve that and get our answer of
. (B)
That is simply a linear equation with a y-intercept of 0.
So... let's solve this.
Simply put, a direct variation multiplies the x-value by a constant to get the y-value.
Let's take the point
We easily solve that and get our answer of