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m_a_m_a [10]
3 years ago
5

If z/3 = 6, what is z equal to?

Mathematics
2 answers:
netineya [11]3 years ago
8 0

Answer:

z = 18

Step-by-step explanation:

z/3 = 6

Múltiply by the reciprocal

(3/1) (z/3) = 6(3)

z = 18

Elan Coil [88]3 years ago
4 0

Answer:

z = 18

Step-by-step explanation:

z/3 = 6

Multiply by 3  on both sides

z/3 * 3 = 6*3

z = 18

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How do I solve for x? <br><br>2x + 16 = -5(x + 1)
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3 years ago
The cost, C, to produce b baseball bats per day is modeled by the function C(b) = 0.06b2 – 7.2b + 390. What number of bats shoul
kozerog [31]

Check the picture below, that's just an example of a parabola opening upwards.

so the cost equation C(b), which is a quadratic with a positive leading term's coefficient, has the graph of a parabola like the one in the picture, so the cost goes down and down and down, reaches the vertex or namely the minimum, and then goes back up.

bearing in mind that the quantity will be on the x-axis and the cost amount is over the y-axis, what are the coordinates of the vertex of this parabola?  namely, at what cost for how many bats?

\bf \textit{vertex of a vertical parabola, using coefficients} \\\\ C(b) = \stackrel{\stackrel{a}{\downarrow }}{0.06}b^2\stackrel{\stackrel{b}{\downarrow }}{-7.2}b\stackrel{\stackrel{c}{\downarrow }}{+390} \qquad \qquad \left(-\cfrac{ b}{2 a}~~~~ ,~~~~ c-\cfrac{ b^2}{4 a}\right)

\bf \left( -\cfrac{-7.2}{2(0.06)}~~,~~390-\cfrac{(-7.2)^2}{4(0.06)} \right)\implies (60~~,~~390-216) \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ ~\hfill (\stackrel{\textit{number of bats}}{60}~~,~~\stackrel{\textit{total cost}}{174})~\hfill

6 0
3 years ago
The ratio of oil to vinegar in a certain salad dressing is 8:5. How much oil is blended with 7 liters of vinegar forbthat recipe
Nadya [2.5K]
8:5 x:7
8/5=x/7 Solve for x
x=11 1/5 or 11.2 liters
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3 years ago
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