Answer: 1. 1,0 2. -1,9 3.-20
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
11)  strategy:  since they tell us. indirectly,  that the length of  JK is the same as LM then we can set those two equal, solve for X  and then.. when we have X we can figure out the lenght of JK  and LM and then just divide that by 2 go get PK  ( :0 Player Killer ???  no , not that PK)     
solve JK and LM
3x + 23 =9x-19
42 = 6x
7 = x
now that we know x = 7 plug it into either equation to come up with the length of JK or LM .  I'll pick JK just b/c it was 1st
3(7) + 23 = JK
21+23 = JK
44 = JK
now take half of 1/2*JK= 22  that is PK    ( are you sure that 's not player killer?) 
PK = 22
12) strategy: set the two arcs BG and GC equal and solve for X, then plug x into either equation and the multiply the answer by 2 to find arc AB 
9x-20 = 5x + 28
4x = 48
X = 12
9(12) -20 = BG
88 = BG
2*88 + AB
176 = AB
13)  done
14)  strategy: find the angle at L,  and that will also be the arc of MK
<em>copy and past the below</em> helpful trig functions into your computer
Use SOH CAH TOA to recall how the trig functions fit on a triangle
SOH: Sin(Ф)= Opp / Hyp
CAH: Cos(Ф)= Adj / Hyp
TOA: Tan(Ф) = Opp / Adj
<em>copy and past the above</em> :
use which ever trig function you want , we have all the sides of the triangle, I'll use CAH 
Cos(Ф) = 9/15
Ф = arcCos(9/15)
Ф = 53.13010°
arc MK = 53.13010°
15)   strategy:  arc JK is just 2 times MK
2*MK = 106.26020°
arc MK = 106.26020°
16)  find arc JPK   strategy:  JPK is just the remaining part of a full circle of 360 - MK  = 253.7397°
arc JPK = 253.7397°
 
        
             
        
        
        
We know that
x²+px−35=0-------> <span>has one root that is equal to 7
so
substitute x=7 in the equation
</span>7²+p*7−35=0
49+p*7−35=0
14+p*7=0
p=-14/7------> p=-2
the answer Part a) is 
t<span>he value of the coefficient p is -2
</span>
Part b) <span>Find the other root
</span>x²+px−35=0-----> x²-2x−35=0
<span>
using a graph tool-------> to resolve the second order equation
see the attached figure
the other root is
x=-5
the answer part b) is</span>
 the value of  the other root is -5<span>
</span>
 
        
        
        
Answer:
1/10
Step-by-step explanation:
10/100= 10%
 
        
                    
             
        
        
        
Answer:
310.8m²
Step-by-step explanation:
<u>GIVEN :-</u>
- Diameter = 9m ⇒ Radius (r) = 9/2 = 4.5m
- Slant height (l) = 13m
<u>TO FIND :-</u>
- Surface area of the whole figure.
<u>FORMULAES TO KNOW BEFORE SOLVING :-</u>
- Curved surface area of cone =  (where r = radius & l = slant height) (where r = radius & l = slant height)
- Curved surface area of hemisphere =  (where r = radius) (where r = radius)
<u>PROCEDURE :-</u>
In the figure , the cone is mounted on a hemisphere.
⇒ Radius of cone = Radius of hemisphere = 4.5m
Total surface area of the figure = Curved surface area of both cone & hemisphere.
⇒
- Curved surface area of cone =  ≈ 183.7m² ≈ 183.7m²
- Curved surface area of hemisphere =  ≈  127.1m² ≈  127.1m²
∴ Total surface area = 183.7 + 127.1 = 310.8m²