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babymother [125]
3 years ago
14

12) The equation 4x2 + bx + 9 = 0 has no real solutions. What must be true about b?

Mathematics
1 answer:
Llana [10]3 years ago
6 0

Answer:

i dunno

Step-by-step explanation:

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(9, -4); slope =-2/3<br><br> PLEASE HELP
kupik [55]

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Step-by-step explanation:

rise over run

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5 0
3 years ago
Five sevenths times seven thirds
lord [1]

5/7 x 7/3

Multiply the numerators together and the denominators:

(5 x 7) / (7 x 3)

35/21 reduces to 5/3 = 1 2/3

3 0
3 years ago
Assume that REM sleep time is normally distributed for both children and adults. A random sample of n1 = 9 children (9 years old
Alinara [238K]

Answer:

actually it is

Step-by-step explanation:

i skipped the whole question except the last sentence's few words

6 0
3 years ago
Evaluate the expression for x = 5, y = 3, and z = 14 . 5x−6y+20z over 4yz Enter your answer in the box.
spin [16.1K]

Hello from  MrBillDoesMath!


Answer:   1 17/24


Steps:

          Evaluate             (5x-6y+20x)/ 4yz when x = 5, y = 3, z = 14


          (5(5) - 6(3) + 20(14))   / 4 (3)(14)          (Substitute in values)

       = (25   - 18    +280)       / 4 (3) (14)         (Evaluate products)

       =  (287) /  4 (3) (14)                                (Evaluate expressions)

      =  287/ 168                                             (4 (3)(14) = 168)

      =  (168  + 119 ) /168                                 287 = 168  + 119

      = (168)/168 + 119/168

      = 1              + 119/168

      = 1  119/168          

       BUT 119 = 17 * 7  (surprise!)  and 168 = 12 * 7 * 2 so answer

    =  1 (17*7)/(12*7*2)

    =  1 (17)/(12*2)                               (Cancel 7's)

    = 1 (17/24)                                    


Regards, MrB    


3 0
3 years ago
A number has an absolute value equal to 13
amm1812
13 because absolute is showing the same number but positive
4 0
3 years ago
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