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3 years ago

F ( x ) = − x 2 − 12 Find f ( − 3 )

Mathematics

2 answers:

NARA [144]3 years ago

5 0

Answer:

-3

Step-by-step explanation:

x=-3 substitute in the equation

+3 squared-12=-3

Firdavs [7]3 years ago

3 0

Answer:

f(-3)=-21

Step-by-step explanation:

f(x)=-x2-12

f(-3)=-(-3)2-12

f(-3)=-9-12

f(-3)=-21

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melomori [17]

Answer:

45ci

Step-by-step explanation:

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2 years ago

Read 2 more answers

Please show me how to solve for Xsquared - 21.75X = -15.75. I have the solution but do not know how to solve it.

Andreas93 [3]

$x^2-21.75x=-15.75 \\
x^2-21.75x+15.75=0$

Use the quadratic formula:
$x^2-21.75x+15.75=0 \\ \\
a=1 \\ b=-21.75 \\ c=15.75 \\ b^2-4ac=(-21.75)^2-4 \times 1 \times 15.75=473.0625-63=410.0625 \\ \\
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x=\frac{21.75-20.25}{2} \ \lor \ x=\frac{21.75+20.25}{2} \\
x=\frac{1.5}{2} \ \lor \ x=\frac{42}{2} \\
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\boxed{x=\frac{3}{4} \hbox{ or } x=21}$

3 0

3 years ago

Find the area of the figure.<br><br> Whoever answers within an hour get brainliest

Gemiola [76]

Answer:

48 ft^2

Step-by-step explanation:

The width and height of this parallogram are given: 6 ft and 8 ft.

The area of a parallelogram of width w and height h is A = wh.

Thus, the area of this particular parallelogram is

A = (6 ft)(8 ft) = 48 ft^2

8 0

3 years ago

I need help with this please. :)

stepladder [879]

Answer:

64x³+4

-------------

2x-1

Step-by-step explanation:

I hope this helps. :)

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2 years ago

Complete the equation of the line through (6,−6) and (8,8)

vlabodo [156]

Gradient =(y1-y2) / (x1-x2)
(-6-8)/(6-8)
:7

y:mx+c
8:7(8)+c
c:-48
y:7x-48

7 0

2 years ago