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bazaltina [42]
3 years ago
6

Help me please, evaluate the expressions below if (a=8), (b=-2) and (c=-9).

Mathematics
2 answers:
Naddika [18.5K]3 years ago
8 0

Answer:

<em>100 </em>

Step-by-step explanation:

Evaluate the expressions | - a² - 2bc | if a = 8, b = - 2 and c = - 9.

| - 8² - 2( - 2 )( - 9 ) | = | - 64 - 36 | = | - 100 | = <em>100</em>

maxonik [38]3 years ago
5 0

-(8^2) - 2(2)(9)=

-64-36

Final answer: -100

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Which of the following statements are true about the graph of f(x) = 6(x + 1)2 -9?
Sphinxa [80]

Answer:

Step-by-step explanation:

a. The vertex is (1, -9).  False.  The vertex is (-1, -9).

b. The graph opens upward.  True.  That coefficient '6' is positive.

c. The graph is obtained by shifting the graph of f(x) = 6(x + 1)2 up 9 units.  False.  It's DOWN 9 units.

d. The graph is steeper than the graph of f(x) = x^2.  True.  The given function increases 6 times faster than does x^2.

e. The graph is the same as the graph of f(x) = 6x2 + 12x - 3.

Let's put f(x) = 6(x + 1)^2 -9 into standard form.  Expanding the first term, we get f(x) = 6(x^2 + 2x + 1) - 9, or f(x) = 6x^2 + 12x + 6 - 9.  YES, TRUE

3 0
3 years ago
2(10 – 24x) + y2<br> What is X equals<br> What is Y equals <br> What is the answer
kakasveta [241]

Answer:

X= 5/12 + 1/24y  

Y= -10 + 29x

Step-by-step explanation:

2(10- 24x)+ 2y                          2(10- 24x)+ 2y

20 - 48x +2y                            20 - 48x +2y

48x =20 +2y                            -2y = 20- 48x

/48   /48  /48                           /-2    /-2    /-2

x= 5/12 + 1/24y                         y= -10 +29x

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3 years ago
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Step-by-step explanation:

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= 1/4 * 16a + 1/4 * 8b + 1/4 * c

= 4a + 2b + 1/4 c.

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\frac{1.4\cdot10^{18}}{1.1\cdot10^{12}}=&#10;1.(27)\cdot10^6=1272727.(27)

1272727 \hbox{ Earths}

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Step-by-step explanation:

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