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arlik [135]
2 years ago
11

State the value of the discriminant for y =

2+9x-3" alt="5x^2+9x-3" align="absmiddle" class="latex-formula">
Mathematics
1 answer:
Nostrana [21]2 years ago
3 0

Answer:

141, meaning that there will be two real solutions

Step-by-step explanation:

The discriminant of a quadratic is b^2-4ac, which in this case is:

9^2-4(5)(-3)=81+60=141

Since the discriminant is positive and not zero, there will be two real solutions to this equation. This is because when the discriminant is negative, and you take the square root of it, you get a negative number. If you take the square root of 0, you get 0, which means that there will only be one solution to the equation.

Hope this helps!

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What is 8/25 as a decimal representation and as a percent representation please answer thank you
Sholpan [36]

Answer:

decimal: 0.32 percent: 32%

Step-by-step explanation:

3 0
3 years ago
Kylee frove 131.5 miles on Monday. On Tuesday she had to drive 213.27 miles. How much farther did she drive on Tuesday than on M
salantis [7]
Kylee drove 81.77 more miles on Tuesday.
8 0
3 years ago
Solve this recurrence relation<br><br>an= -an-2<br>a1=1<br>a2=2​
Lesechka [4]

Answer:

Give Full Question ...I think this question is incomplete

3 0
2 years ago
Urgent, Please help!
yarga [219]

Answer:

<h2>min: 52</h2><h2>max: 78</h2><h2>median: 63</h2><h2>lower quartile median: 54</h2><h2>upper quartile median: 73</h2><h2>interquartile range: 19</h2>

Step-by-step explanation:

the temperatures ordered from least to greatest

52, 53, 54, 54, 57, 62, 64, 69, 73, 73, 77, 78

the min is 52

the max is 78

median:

52, 53, 54, 54, 57, 62, 64, 69, 73, 73, 77, 78

(62+64)/2=126/2=63

thus the median is 63

now we don't include the median in finding the upper and lower quartile medians:

lower quartile median:

52, 53, 54, 54, 57, 62

54 (same #s no need to add up and divide by 2)

upper quartile median:

64, 69, 73, 73, 77, 78

73 (same #s no need to add up and divide by 2)

interquartile range is:

upper quartile median-lower quartile median:

73-54

19

8 0
2 years ago
(x 2 + 2x - 1)(x 2 + 2x + 5) Please help asap!
Yanka [14]
Hi there!

To solve this equation, we can use distributive property.

I listed the terms you have to multiply :
x² × x² = x^4
x² × 2x = 2x³
x² × 5 = 5x²
2x × x² = 2x³
2x × 2x = 4x²
2x × 5 = 10x
-1 × x² = -x²
-1 × 2x = -2x
-1 × 5 = -5

Add all of them....
x^4 + 2x³ + 5x² +2x³ + 4x² + 10x - x² - 2x - 5
add up the like terms to simplify

x^4 + 4x³ + 8x² + 8x - 5

Hope this helped! :)
5 0
3 years ago
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