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Art
10 days ago
8

Explain how you can determine the number of real number solutions of a system of equations in which one equation is linear and t

he other is quadratic–without graphing the system of equations.
Mathematics
1 answer:
babunello [3.6K]10 days ago
3 0

Answer:

To find the number of genuine solutions for a system of equations consisting of a linear equation and a quadratic equation

1) With two variables, say x and y, rearrange the linear equation to express y, then substitute this y in the quadratic equation

After that, simplify the resulting equation and determine the number of real roots utilizing the quadratic formula, x = \dfrac{-b\pm \sqrt{b^{2}-4\cdot a\cdot c}}{2\cdot a} for equations of the type 0 = a·x² - b·x + c.

When b² exceeds 4·a·c, two real solutions emerge; if b² equals 4·a·c, there will be a single solution.

Step-by-step explanation:

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Of 162 students honored at an academic awards banquet, 48 won awards for mathematics and 78 won awards for English. There are 14
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Answer: 56/81

Step-by-step explanation:

refer to the attached document

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5 days ago
What’s the x value of PR=9x-31 and QR=43?
AnnZ [3877]

Reducing

9x + -31 = 43

Rearranging the components:

-31 + 9x = 43

Finding the solution

-31 + 9x = 43

Isolating the variable 'x'.

Shift all terms with x to one side,

Add '31' to both sides of the equation.

0 + 31 + 9x = 43 + 31

Summing up similar items:

-31 + 31 = 0

0 + 9x = 43 + 31

9x = 43 + 31

Summing similar items:

43 + 31 = 74

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Split each side by '9'

x = 8.222222222

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x = 8.222222222

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17 days ago
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Express 9 ten thousandths in Scientific notation
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<span>9 ten thousandths equals 0.0009, which can be expressed as 9 × 10 to the power of -4</span>
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13 days ago
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Sean took 4 hours to travel from Town A to Town B at an
Leona [4166]

Answer:

Tina's overall average speed for the journey is 56 km/h.

Step-by-step explanation:

Sean's travel time from Town A to Town B is 4 hours.

Sean's average speed is 70 km/h.

Using the motion equation, s = ut + 0.5 at², we can find:
Time, t = 4 hours.

Initial speed, u = 70 km/hr.

Acceleration, a = 0 m/s².

Replacing the variables:

      s = ut + 0.5 at²

      s = 70 x 4 + 0.5 x 0 x 4²

      s = 280 km

The distance from Town A to Town B is 280 km.

Tina's travel time exceeds Sean's by 1 hour.

Tina's time to travel from Town A to Town B is 4 + 1 = 5 hours.

Again applying the motion equation, s = ut + 0.5 at²:

Time, t = 5 hours.

Distance, s = 280 km.

Acceleration, a = 0 m/s².

Putting in values:

      s = ut + 0.5 at²

      280 = u x 5 + 0.5 x 0 x 5²

      u = 56 km/hr.

Tina's overall average speed is thus 56 km/h.

8 0
3 days ago
A circle with radius of \greenD{5\,\text{cm}}5cmstart color #1fab54, 5, start text, c, m, end text, end color #1fab54 sits insid
Leona [4166]

Response:

The area of the shaded part is 42.50 cm².

Detailed explanation:

Examine the diagram provided.

The circle has a radius of r = 5 cm.

Dimensions of the rectangle are:

l = 11 cm

b = 11 cm.

Calculate the area of the shaded portion as follows:

Area of the shaded region = Area of rectangle - Area of circle

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Consequently, the shaded area totals 42.50 cm².

7 0
9 days ago
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