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Marina86 [1]
3 years ago
9

Someone bought three t-shirts for $15 and nine $0. 90 each including tax how much did he spend

Mathematics
1 answer:
Goshia [24]3 years ago
6 0

You multiply three( # of shirts) and 15.90 ( price)

The answer is $47.70 is how much he spend

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is it 32

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The equation of a quadratic is =2^2+3−2and after you factorizing 2^2+3−2=0you got x = -2 and x = 1/2 and the curve crosses the y
Lelechka [254]

Given the next quadratic function:

y=2x^2+3x-2

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x_V=\frac{-b}{2a}

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\begin{gathered} x_V=\frac{-3}{2\cdot2} \\ x_V=-\frac{3}{4}=-0.75 \end{gathered}

The y-coordinate of the vertex is found by substituting the x-coordinate in the quadratic function, as follows:

\begin{gathered} y_V=2x^2_V+3x_V-2 \\ y_V=2\cdot(-\frac{3}{4})^2+3\cdot(-\frac{3}{4})-2 \\ y_V=2\cdot\frac{9}{16}+3\cdot(-\frac{3}{4})-2 \\ y_V=\frac{9}{8}-\frac{9}{4}-2 \\ y_V=-\frac{25}{8}=-3.125 \end{gathered}

The factorization indicates that the curve crosses the x-axis at the points (-2, 0) and (1/2, 0). We also know that the curve crosses the y-axis at (0,-2). Connecting these points and the vertex (-0.75, -3.125) with a U-shaped curve, we get:

6 0
1 year ago
Which graphs show functions with direct variation? select three options.
Nikolay [14]

Answer:

the daily graphs

Step-by-step explanation:

the news paper

4 0
2 years ago
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