The unit rate is basically her progress every hour so...
1.5 hours = 2/7
1 hour = 2/7 x 2/3 = 4/21
answer: 4/21 per hour
A= 80
b= 100
c= 100
a is the same as the 80° already shown and to get b you have to subtract 80 from 180
Answer:
LCM and every 36 days
Step-by-step explanation:
Answer:
93+30=123 so e equals 123
Step-by-step explanation:
To check, do 123-30=93
Answer:
( x+1)^2 + (y+2)^2 = 25
The center is (-1, -2) and the radius is 5
Step-by-step explanation:
x^2 + 2x + y^2 + 4y = 20
Complete the square
2/2 =1 1^2 =1 so add 1 for x 4/2 =2 2^2 = 4 so add 4 for y
x^2 +2x +1 +y^2 +4y+4 = 20 +1 +4
( x+1)^2 + (y+2)^2 = 25
(x+1) ^2 + (y+2)^2 = 5^2
(x - -1) ^2 + (y - -2)^2 = 5^2
This is in (x-h)^2 + (y-k)^2 = r^2 form where (h,k) is the center and r is the radius
The center is (-1, -2) and the radius is 5
