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DerKrebs [107]
3 years ago
10

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)

Mathematics
2 answers:
djverab [1.8K]3 years ago
8 0

Answer:

The y-axis is the correct answer.

dezoksy [38]3 years ago
4 0
Answer:

The axis of symmetry is x=6
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Circle Geometry please help
IrinaK [193]

Answer:

The value of m is 70°. m is inscribed angle and inscribed angle is exactly half of central angle. where central angle is 140°.

4 0
3 years ago
LAST ONE \small \angle L and \small \angle M are supplementary, \small m\angle L=12x+45 and \small m\angle M=18x-30. Determine t
FinnZ [79.3K]

Answer:

m\angle L = 111\degree \\m\angle M = 69\degree

Step-by-step explanation:

Since, angle L and angle M are supplementary.

\therefore m\angle L + m\angle M= 180\degree  \\ \therefore \: 12x + 45 + 18x - 30 = 180 \degree \\ \therefore \: 30x + 15= 180 \degree\\ \therefore \: 30x= 180 \degree - 15 \degree\\ \therefore \: 30x= 165 \degree  \\ x =  \frac{165 \degree}{30}  \\ x = 5.5 \degree \\  \\ m\angle L  = 12x + 45  \\ m\angle L = 12 \times 5.5 + 45 \\ m\angle L  = 66 + 45 \\ \huge \red{ \boxed{ m\angle L  = 111 \degree}} \\  \\ m\angle M=18x - 30 \\ m\angle M=18 \times 5.5 - 30 \\ m\angle M=99 - 30 \\ \huge \purple{ \boxed{ m\angle M=69 \degree}} \\

3 0
3 years ago
What is the slope of this equation?y= -1/2x −3 Question 2 options: 0 -3 -1/2
storchak [24]

Answer:

-1/2

Step-by-step explanation:

In the equation y=mx+b..

y and x are the coordinates that go into your function

m is the slope

and b is the y intercept

looking at y=-1/2x-3 i can tell that -1/2 is in the place of m which is slope, and -3 is the y intercept.

8 0
3 years ago
What is the determinant of the coefficient matrix of the system<br> –11<br> –2<br> 0<br> 55
Alina [70]

The first two rows of coefficients are identical, so by inspection, the determinant is 0.

7 0
4 years ago
Read 2 more answers
A wide screen television display measures approximately 15 inches high and 27 inches wide. A television is advertised by giving
gulaghasi [49]
The answer would be 31 in.

First do the Pythagorean theorem. 

225+ 729= 954

Then find the square root of 954 which is 30.88 repeating, so round up to 31 in.
3 0
3 years ago
Read 2 more answers
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