A model builder has 30 pieces of balsa wood in a box. Four pieces are 15 inches long, 10 pieces are 12 inches long, and the rest
2 answers:
Answer:
The probability is 53.33%.
Step-by-step explanation:
A model builder has 30 pieces of balsa wood in a box.
4 pieces are 15 inches long.
10 pieces are 12 inches long.
Says rest are 8 inches. So, rest are
16 pieces are 8 inches long.
Now, we have to tell the probability the builder will pull an 8-inch piece from the box without looking.
The probability is given by=
Hence, the probability is : or
If we want this in percentage this is 53.33%.
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Answer:
y= 2x -3
Step-by-step explanation:
Let's rewrite the given equation into the form of y=mx+c, so that we can find the gradient of the line. In this form, m (coefficient of x) is the gradient.
4x -2y= 3
2y= 4x -3
<em>Divide</em><em> </em><em>by</em><em> </em><em>2</em><em> </em><em>throughout</em><em>:</em>
Thus the gradient is 2.
Parallel lines have the same gradient thus the line would also have a gradient of 2.
Substitute m=2 into the equation:
y= 2x +c
To find the value of c, substitute a pair of coordinates.
When x=2, y=1,
1= 2(2) +c
1= 4 +c
c= 1 -4
c= -3
Thus, the equation of the line is y= 2x -3.