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4 years ago

Evaluate the expression when x = -4.5(x – 6) + 3x – 2

Mathematics

1 answer:

SVETLANKA909090 [29]4 years ago

6 0

Answer:

-64

Step-by-step explanation:

5(x – 6) + 3x – 2

Distribute

5x - 30 +3x -2

Combine like terms

8x -32

Let x = -4

8*-4 -32

-32 -32

-64

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Determine which is bigger a 8.5 by 12 rectangulae pizza or a circular 12 pizza

kotegsom [21]

Answer:

circular pizza

Step-by-step explanation

rectangular - 8.5 x 12= 102

circular - 12 x 12= 144

6 0

3 years ago

Derive the equation of the parabola with a focus at (0, −4) and a directrix of y = 4.

Goshia [24]

$\sqrt{(x_{0} - 0)^{2} + (y_{0} - (-4))^{2}} = |y_{0} - 4|$
<span> $\sqrt{(x_{0} - 0)^{2} + (y_{0} + 4)^{2}} = |y_{0} - 4|$
</span> $(x_{0} - 0)^{2} + (y_{0} + 4)^{2} = (y_{0} - 4)^{2}$
$(x_{0})^{2} + (y_{0} + 4)^{2} = (y_{0} - 4)^{2}$
$x_{0}^{2} + (y_{0}^{2} + 4y_{0} + 4y_{0} + 16) = y_{0}^{2} - 4y_{0} - 4y_{0} + 16$
$x_{0}^{2} + (y_{0}^{2} + 8y_{0} + 16) = y_{0}^{2} - 8y_{0} + 16$
$x_{0}^{2} + y_{0}^{2} + 8y_{0} + 16 = y_{0}^{2} - 8y_{0} + 16$
$x_{0}^{2} + 16y_{0} = 0$
$16y_{0} = -x_{0}^{2}$
$\frac{16y_{0}}{16} = \frac{-x_{0}^{2}}{16}$
$y_{0} = -\frac{1}{16}x_{0}^{2}$
$y = -\frac{1}{16}x^{2}$

The answer is C.

5 0

3 years ago

-(1 – 7d) = 3(8a - 6)

mamaluj [8]

Answer:

-(-71)=3(8a-6)

remove parenthesis

-(-71)=24a-18

71=24a-18

-24a=18-71

-24a=-89

a=89/24.

6 0

4 years ago

What's the result of subtracting the second equation from the first ? please provide steps <3

BaLLatris [955]

Ans will be 4x + 3y = 11

3 0

3 years ago

The function f(x) = -3cos(3x+ x/4 ) has amplitude of what

Pepsi [2]

Answer:

amplitude = 3

Step-by-step explanation:

The standard form of a cosine function is

f(x) = a cos(bx + c) + d

amplitude = | a |, period = $\frac{2\pi }{b}$

phase shift = - $\frac{c}{b}$ , d is the vertical shift

Given the above function, then

amplitude = | - 3 | = 3

5 0

3 years ago

Evaluate the expression when x = -4.5(x – 6) + 3x – 2​

Evaluate the expression when x = -4.5(x – 6) + 3x – 2