Hey there!
Square root of four is positive or negative 2.
So we have:
or 
Add or subtract.
or 
Simplify the absolute value bars.
1 or 5
Hope this helps!
25
Step-by-step explanation
Let the ones's digit =x.
So, sum of the digits =7
Tens's digit =7−x
Original no. =10(7−x)+x=70−10x+x=70−9x
Reversed no. =10x+7−x=9x+7
2(orig no) = reversed no. −2
2(70−9x)=9x+7−2
140−18x=9x+5
27x=135
x=5
Ten's digit =7−5=2
No. =25
x=4,3,2 or,1 are the possible
Use pemdas, multiply 3 • 4 and you’ll get 12. Add 6 and the answer is 18
1. Yes. Both ratios equal 2:3.
2. No. They do not equal each other.
3. No. They do not equal each other.
4. Yes. Both ratios equal 2:5.
5. Yes. Both ratios equal 4:9.
6. Yes. Both ratios equal 2:5.
Hope this helps!