Answer:
step 1: move the -4 to the right: x^2 -2x = 4
step 2: add 1 to each side: x^2 -2x + 1 = 4 + 1
step 3: factor the left side and simplify the right side: (x-1)^2 = 5
step 4: take the square root of each side: x - 1 = sqr root of 5
step 5: move the 1 to the other side: 
and 
Answer:
If I read your problem write: 126
Step-by-step explanation:
if I interpret this as
- (-3)* 2 * (5) * 2 * (7) * 3 divided by 5 * 2
we can get 126
because:
- (-3)* 2 * (5) * 2 * (7) * 3 divided by 5 * 2
= 6 * 5 * 2 *7 * 3 / (5*2)
= 60*7 * 3/ (5*2)
= 420 * 3 / 10
= 1260/10
= 126
Take x as Danas age,
equation,
x×1/4= x
hope this helps....
Answer:
2 hours 30 minutes
Step-by-step explanation:
Step one
Given data
The total distance to be covered= 20miles
Priya runs at a constant speed of 6 miles an hour
Hence Her speed = 6mph
Jada walks at a constant speed of 2 miles an hour
Hence Her speed = 2mph
let the time taken by them to cover the distance be t
Step two:
from speeed= distance/time
distance= speed*time
so
20=6*t+2*t
20= 6t+2t
20=8t
divide both sides by 8
t= 20/8
t=2.5 hours
That is, it wiil take them 2 hours 30 minutes to meet
The reason is because, the distances covered by them must sum up to 20 miles
