Answer:
Step-by-step explanation:
Given
The above diagram
Required
Determine length AB
Tangents drawn from the same point of a circle are equal;
<em>This implies that</em>
Substitute values for AB and AC
Subtract 3y from both sides
Divide both sides by 8
Substitute 
for y in
Answer:
100cm2
Step-by-step explanation:
The standard form of the equation of circle is:
(x – h)^2 + (y – k) ^2 = r^2
Where the center being at the point (h, k) and the radius
being r
Substituting the values to the equation:
<span>(-15 - (-7)) ^2 + (y – (-1)) ^2 = 13^2 </span>
64 + (y +1) ^2 = 169
(y +1) ^2 = 105
y + 1 = 10.247
<span>y = 9.247</span>
Answer: Lisa has 23 Pablo has 18 and Chau has 182
Step-by-step explanation: if you multiply 91 times 2 you get 182 for Chau, next if you take 5 and divide it by 90 you get 18 for Pablo lastly if you take 18 and add it by 5 you get 23 for Lisa
Given:
Area(A)= 63m^2
Length (L)= 2W+5
Width (W)=?
A=LxW
63=(2W+5)(W)
63=2W^2 + 5W
0=2W^2+5W-63
0=(2W-9)(W+7)
2W-9=0 then W=4.5 and W+7=0 then W=-7
Can only use 4.5 since it is positive and distance is positive.
W= 4.5 m
L=2W+5=2 (4.5)+5=9+5=14m
