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irakobra [83]
2 years ago
6

How many, and what type of, solutions does 4x² + 12x + 9 = 0 have?

Mathematics
2 answers:
Gemiola [76]2 years ago
7 0
1 rational solution

4x² + 12x + 9 = 0
(2x+3)²=0
2x + 3 =0
2x +3 -3 = 0-3
2x = -3
2x/x = -3/2
x = -3/2
damaskus [11]2 years ago
3 0

The answer is 1 rational solution. :) Took the test and got it correct.

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Lines n and m are parallel and lines s and t are parallel, as shown.
bekas [8.4K]

Answer:

60

Step-by-step explanation:

straight lines are 180

since all lines are parallel

180 - 120 = 60

6 0
3 years ago
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A local amusement park charges $21.50 per daily adult ticket and $14.75 per daily child's ticket. A group of 12 people paid $204
grandymaker [24]

Answer:

x+y=12

21.50x+14.75y=204

Step-by-step explanation:

Let x be the number of adult tickets and y be the number of children's tickets.

We are given that there are total 12 people. Therefore, we can set:

x+y=12

Moreover, we are given that an adult ticket costs $21.50 and a child's ticket costs $14.75, therefore, cost of x adult tickets will be 21.50x and cost of y children's ticket will be 14.75y. We can form the second equation by setting the total cost of tickets as:

21.50x+14.75y=204

Therefore, the required system of equations that could be used to find x and y will be:

x+y=12

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2 years ago
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Find the upper quartile of this data set: 593, 588, 540, 434, 420, 398, 390, 375
ratelena [41]
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A machine lifts up containers of coal from the mine and lowers empty containers down. The machine uses an electric motor connect
Shkiper50 [21]

Answer:

The maximum power available to the motor is 2.4 MW

Step-by-step explanation:

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Therefore given that the parameters are;

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Therefore, we can find the power as follows;

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The maximum power available to the motor , P = 2.4 MW.

4 0
2 years ago
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Kipish [7]

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To find this, we simply have to put 0 in for x, as this is when there has been no time (at launch)

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h(0)=-80+180

h(0) = 100

7 0
3 years ago
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