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Tamiku [17]
3 years ago
14

Use the discriminant to find all values of b for which the question has one real solution.

Mathematics
1 answer:
Arada [10]3 years ago
4 0
Use the formula 0 = b^2-4ac

0 = -b^2-4(2)(-9)

0 = -b^2+72

b^2 = 72

b = square root of 72

b = 2 real numbers
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Answer:

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Step-by-step explanation:

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3 years ago
Daisy measured the heights of 20 plants.
sergiy2304 [10]

Answer:

  • 30.5 cm

Step-by-step explanation:

<em>Refer to attached</em>

  • Height of plants (h) >> Frequency >> Midpoint >> Frequency x midpoint
  • 0 <h < 10 >>  1  >> 5 >> 5
  • 10 <h < 20 >> 4 >> 15 >>  60
  • 20 <h < 30 >> 7 >> 25 >> 175
  • 30 <h < 40 >> 2 >> 35 >> 70
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  • 50 <h < 60 >> 3 >> 55 >> 165

Sum of frequencies = 20

Sum of frequency x midpoint product = 610

<u>Mean height </u>

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5 0
4 years ago
5. Tyra has 12 cups of sugar. If r is the amount of sugar needed for
MrMuchimi

Answer:

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Step-by-step explanation:

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6 0
3 years ago
Please help me (30 points) 1. A recipe calls for 2 1/3 cups of flour, 3/4 cups of white sugar, and 1/3 cups of brown sugar. The
Katena32 [7]

Lets find how much flour we need for just one serving.

2 2/3 ÷ 6

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If we triple the recipe (6 * 3 = 18), we will have a total of 18 servings. Multiply the amount of flour we got for one serving to 18 servings.

4/9 * 18/1

72/9

8 cups of flour for 18 servings

Best of Luck!

4 0
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Answer:

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Step-by-step explanation:

3 0
3 years ago
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