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Katena32 [7]
3 years ago
12

Brainiest if right so pls solve down below!

Mathematics
1 answer:
Fantom [35]3 years ago
8 0

9514 1404 393

Answer:

  D)  54

Step-by-step explanation:

Put the numbers where the variables are and do the arithmetic.

  2[(x -1) +2xy]

  = 2[(4 -1) +2(4)(3)]

  = 2[3 +24]

  = 2(27) = 54 . . . . matches choice D

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<h2><u>Answer:</u></h2>

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Answer:  -3

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Step-by-step explanation:

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3 years ago
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What is the truth value for the following conditional statement?
Studentka2010 [4]

Answer:

TT→T

Step-by-step explanation:

If p is false, then ~p is true.

If q is false, then ~q is true.

Now note that

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  • If a is false, b is true, then a→b is true.
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In your case, both~p and ~q are true, then ~p→~q is true too (or TT→T)

3 0
3 years ago
(5 pts) A quadratic function f is given by f(x) = ax2 + bx + c where a is not 0. Select all
Vsevolod [243]

Answers:

  • a) True. Plug in x = 0 and it leads to y = c. Therefore, the point (0,c) is on the parabola.
  • b) False. Plug in y = 0 and apply the quadratic formula. One x intercept may sometimes be x = c, but it could easily be other values as well. Or perhaps you may not get any real number solutions at all. See part d) below.
  • c) True. If a < 0, then the leading coefficient is negative. Overall, both endpoints will tend toward negative infinity to produce a parabola that opens downward.
  • d) False. The quadratic may have one x intercept or it may not have any x intercepts at all. It depends on what the discriminant d = b^2 - 4ac is equal to. If d < 0, then we have no x intercepts. If d = 0, then we have exactly 1 x intercept. If d > 0, then we have two different x intercepts.
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8 0
3 years ago
Eight times a number increased by 6 is 62
N76 [4]
8x+6=62

8x=62-6

8x=56

X=56/8

X=7

The answer is 7. Hope this helps!
3 0
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