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juin [17]
3 years ago
6

HELP URGENT 5 STAR RATING + BRAINLY IF SOLVED!

Mathematics
1 answer:
Nat2105 [25]3 years ago
5 0
4.5 * $9.26 = $41.67
3 * $9.05 = $27.15
2.25 * $9.76 = $21.96

$41.67+$27.15+$21.96 = $90.78

Carmen spent $90.78.
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Use the discriminant, b2 - 4ac, to determine which equation has complex solutions.
ruslelena [56]

Using the discriminant, the quadratic equation that has complex solutions is given by:

x² + 2x + 5 = 0.

<h3>What is the discriminant of a quadratic equation and how does it influence the solutions?</h3>

A quadratic equation is modeled by:

y = ax² + bx + c

The discriminant is:

\Delta = b^2 - 4ac

The solutions are as follows:

  • If \mathbf{\Delta > 0}, it has 2 real solutions.
  • If \mathbf{\Delta = 0}, it has 1 real solutions.
  • If \mathbf{\Delta < 0}, it has 2 complex solutions.

In this problem, we want a negative discriminant, hence the equation is:

x² + 2x + 5 = 0.

As the coefficients are a = 1, b = 2, c = 5, hence:

\Delta = 2^2 - 4(1)(5) = 4 - 20 = -16

More can be learned about the discriminant of quadratic functions at brainly.com/question/19776811

#SPJ1

3 0
1 year ago
A person participates in a weekly office pool in which he has one chance in ten of winning the prize. If he participates for 5 w
Molodets [167]

Answer: 2

Step-by-step explanation:

5 0
3 years ago
Who can help me PLEASE <br><br>Instruction find the measure of the missing angles in the kite​
mojhsa [17]

Both the angles will be 105°

Just add up the given angles, subtract the result by 360, and divide by 2.

8 0
3 years ago
Braydon is performing the four arithmetic operations on 14 and 2.
Studentka2010 [4]
Well, let's just solve all these darn operations!

<em>14 + 2 = 16
</em><em>14 - 2 = 12
</em><em>14 * 2 = 28
</em><em>14 / 2 = 7
</em>
<em />So, what do you think the answer is? =)
7 0
3 years ago
over the week the daily low temputures in degrees Fahrenheit have been -4, 6.2, 18 1/2, -5.9, 21, -1/4, and 1.75. list these num
8_murik_8 [283]

over the week the daily low temputures in degrees Fahrenheit have been -4, 6.2, 18 1/2, -5.9, 21, -1/4, and 1.75. list these numbers in order from least to greatest​

we have that

1/2=0.5

1/4=0.25

so

order from least to greatest​

<h2>-5.9,-4,-1/4,1/2,1.75,6.2,18,21</h2>

7 0
1 year ago
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