Step-by-step explanation:
step 1. x = .484848 . . . repeats
step 2. 100x = 48.48484848 . . . (multiply by 100)
step 3. subtract x from 100x : 99x = 48
step 4. x = 48/99 (now add the 2 back in)
step 5. answer: 2-48/99.
Answer:
(B) 7.1 is the estimated square root of 50
Step-by-step explanation:
A. √50 = √2 √25
= 5√2.
Jaclyn did not take the square root of 2.
B. We estimate the square root of 2.
Trial and improvement:
It must lie between 1 and 2 so we try 1.5:
1.5 * 1.5 = 2.25
Its < 1.5 so try 1.4
1.4 * 1.4 = 1.96.
So it is a little above 1.4.
Try 1.45:
1.45 * 1.45
1.45
* 1.45
-------
725
5800
14500
2.1025
= 2.1025.
- this is above 2 so the answer is between 1.40 and 1.45 but closer to 1.4.
A good estimate is 1.42
So the square root of 50 is about 5*1.42 = 7.1
Answer:
Tim is wrong.
Step-by-step explanation:
3/6 can be reduced down to 1/2, and 1/2+1/2=1, not 4/12.
