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Nat2105 [25]
3 years ago
7

the graph below shows a scatter plot and a linear model of joanna’s height, in inches, for various ages. what is the best interp

retation of the slope of the line?
Mathematics
2 answers:
qaws [65]3 years ago
8 0
Joanna can expect her height to increase about 2.5inches every year
Artemon [7]3 years ago
3 0

Answer: It's likely that Joanna was about 30 inches tall when she was born

Step-by-step explanation:

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1/3(x-6)=16<br> Please help me out
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Answer:

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motikmotik
To get a number to decrease by 21% you multiply it by 0.79 (1-0.21)
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3 years ago
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Find an equation of the line passing through the pair of points. Write the equation in slope-intercept form.
muminat

Answer:

y=10-x

Step-by-step explanation:

1. Find the slope of the equation using the formula (change in y/change in x)

(3-7)/(7-3)=-4/4=-1

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slope-intercept form: y=mx+b

7=-3+b

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3. Put the slope-intercept form of the equation together.

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3 0
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
What is the area of the triangle?<br> 6 yd.<br> 2 yd.
liq [111]

Answer:

12 yd.

Step-by-step explanation:

6 0
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