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Vinil7 [7]
3 years ago
9

CAN SOMEONE PLEASE HELP, ILL GIVE BRAINLIEST.

Mathematics
1 answer:
Alenkasestr [34]3 years ago
5 0

Answer: 2.5

Step-by-step explanation: Good luck! :D

4 x 2 = 8

5 x 2 = 10

2.5 x 2 = 10

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The area of the triangle formed by points of intersection of parabola y=a(x−3)(x+2) with the coordinate axes is 10. Find a if it
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Answer: a = 4

Step-by-step explanation: Area of a triangle is calculated as: A_{t}=\frac{b.h}{2}.

The triangle formed by the parabola has base (b) equal to the distance between the points where the graph touches x-axis and height (h) is the point where graph touches the y-axis.

The points on the x-axis are the roots of the quadratic equation:

a(x-3)(x+2)=0

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x - 3 = 0

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or

x + 2 = 0

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So, base is the distance between (-2,0) and (3,0).

Since they are in the same coordinate, distance will be:

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2 years ago
An electronics store received two shipments of radios. Of the 250 radios in the first shipment, exactly 6% were damaged. In the
nataly862011 [7]

Answer:

Total number of not damaged = 451

C. 451

Step-by-step explanation:

In the first shipment, 6% of the 250 radios where damaged.

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In the second shipment, 4% of the radios were damaged

Let the number of second shipment= y

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Number of damaged in the second shipment= 216

Total number of not damaged

= 235+216

= 451

Total number of not damaged= 451

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