Answer:
Correct option: A
Step-by-step explanation:
The angle BDC inscribe the arc mBC, so we have that:
mBDC = (1/2) * mBC
mBDC = (1/2) * 118 = 59°
From the secants relation in a circle, we have that:
mA = (1/2) * (mBC - mDE)
35 = (1/2) * (118 - mDE)
70 = 118 - mDE
mDE = 48°
The sum of the arcs is 360°, so we have:
mBC + mCD + mDE + mBE = 360
118 + mCD + 48 + 76 = 360
mCD = 360 - 118 - 48 - 76 = 118°
The angle mCBD inscribes the arc mCD, so we have:
mCBD = (1/2) * mCD = (1/2) * 118 = 59°
The angles mCBD and mBDC are equal, so the triangle is isosceles.
Correct option: A
E=number of eagles
c=number of condors
ttoal is 480
c+e=480
5 times as many condors and 9 times as many eagles totals 3260
5c+9e=3260
we have
c+e=480
5c+9e=3260
eliminateion
elmiminate c
times first equation by -5
-5c-5e=-2400
add to other equation
-5c-5e=-2400
<u> 5c+9e=3260 +</u>
0c+4e=860
4e=860
divide both sides by 4
e=215
sub back
c+e=480
c+215=480
minus 215 from both sides
c=265
thiis spring is
265 condors
215 eagles
1,800 socks
Johnny has 800 and John has 1000 more, so you would add the two numbers to get the answer of 1,800 socks.
Just read what it says not that hard go to the left twice and go up 4 units.
Hope you have a good day
1) / sin x / = y ≥ 0 ;
We solve the equation
a = 1 ; b = 1 ; c = - 2 ;
y1 = ( - 1 + 3 ) / 2 = 1 ≥ 0 ( correct ) ;
y2 = ( - 1 - 3 ) / 2 = - 2 ≥ 0 ( false ) ;
Then, / sin x / = 1 ;
sinx = + 1 or sin x = - 1 ;
x ∈ { 90 } U { 270 } ;
x ∈ {90 , 270}.
