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scZoUnD [109]
3 years ago
7

Find the angle of arc BC

Mathematics
1 answer:
amid [387]3 years ago
6 0

Answer:

   96°

Step-by-step explanation:

The measure of arc EC is twice the measure of ∠DEC, so is ...

  arc EC = 2×68° = 136°

The measure of arc BC is found from the sum of arcs around a circle.

  BC +CE +EB = 360° = BC +136° +128°

  BC = 96° . . . . . subtract 264°

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20PTS!!! PLEASE ANSWER<br><br> 12⋅(4^−2/4^−4)
Talja [164]

Answer:

6

Step-by-step explanation:

First distribute

4 times -2 = -8

4 times -4 = -16

12(-8/-16)

-8/-16 = 0.5

so 12(0.5) = 6

4 0
3 years ago
How do I evaluate the expression -(p+q)2 /(-6) for p=2 andq=4
Dimas [21]
Plug in the values of p and q where you see them in the equation:

-(2+4)2 / (-6) - Distribute the -1 
(-2-4)2 / (-6) -  Distribute the 2
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3 0
3 years ago
What is the focus of the parabola? <img src="https://tex.z-dn.net/?f=y%3D%20%5Cfrac%7B1%7D%7B4%7D%20x%5E%7B2%7D%20-x%2B3" id="Te
OlgaM077 [116]
We know that
the equation of the parabola is of the form
y=ax²+bx+c
in this problem
y=1/4x²−x+3
where
a=1/4
b=-1
c=3
 the coordinates of the focus are
(-b/2a,(1-D)/4a)
where D is the discriminant b²-4ac
D=(-1)²-4*(1/4)*3-----> D=1-3---> D=-2
therefore
x coordinate of the focus
-b/2a----> 1/[2*(-1/4)]----> 2

y coordinate of the focus
(1-D)/4a------> (1+2)/(4/4)---> 3

the coordinates of the focus are (2,3)
3 0
2 years ago
Read 2 more answers
The slope of the line is
Nataliya [291]

ANSWER:

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HOPE THIS HELP

3 0
2 years ago
A race car was attempting to set a record the race car went 1000 feet in 4.5 seconds to the nearest Tenth what is the average sp
V125BC [204]

Answer:

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Step-by-step explanation:

Essentially you're being asked to find the unit speed (that is, distance per sec).

1000 ft

------------ = 222 feet/sec is the approx. average speed / unit speed

4.5 sec

5 0
3 years ago
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