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FinnZ [79.3K]
3 years ago
8

Determine the number of solutions of 2x2 + 3x = 0.

Mathematics
1 answer:
Vedmedyk [2.9K]3 years ago
3 0
\Delta=3^2-4\cdot2\cdot0=9

9\ \textgreater \ 0 so, there are two solutions

or simply by solving

2x^2+3x=0\\
x(2x+3)=0\\
x=0 \vee x=-\dfrac{3}{2}

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Describe in words the rule to calculate the area of a rhombus based on its<br> diagonals.
coldgirl [10]

Answer:

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Alexxandr [17]
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8 0
3 years ago
224 is what % of 640?
lakkis [162]
There is a percent formula for all of these types of percent problems.

It is : is/of = %/100

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is = 224
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% = x
now just sub
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5 0
3 years ago
Read 2 more answers
There are 25 kids in a class, and the number of boys is 2/3 of the number of girls. How many boys and how many girls are in this
Ksju [112]
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3 0
3 years ago
At an ocean depth of 8 meters, a buoy bobs up and then down 5 meters from the ocean's depth. Sixteen seconds pass from the time
lisov135 [29]

Answer:

  See attached for a graph

Step-by-step explanation:

We're going to plot sea level as y=0 and a depth of 8 meters as y=-8.

The problem statement tells you the initial point (x=0) is at normal ocean depth (y=-8), so the first point you put into your sine tool is ...

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The buoy takes 16 seconds to go from a high point to a low point, so the time to the first high point is half that, or x=8 seconds. That high point is 5 meters above its average depth, so is at y=-3.

The second point you will put into your sine tool is ...

  (x, y) = (8, -3)

7 0
3 years ago
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