Answer:
53
Step-by-step explanation
8 - 8/2 (this is a fraction) is also known as
8-4 because 8 divided by 2 is 4
so 8-4 = 4
next 4 + 7^2
why is the 2 in the air????
so that's called an exponent, in this case the two means 7 x 7, it is multiplying by itself, thats the essence of exponents. I can do this for exponent 3,4,5,6,7 and so forth. Anyways, 7^2 or 7x7=49
Knowing this its now 4+49= 53
hope this helps you..
B
Step-by-step explanation:
7x +5 = 3x -15
4x = -20
x = -5
Choice 1
m^2 +n^2=13^2
m^2=13^2-n^2
n^2=13^2-m^2
Both m & n =(13 x sq rt 2)/2
To put it another way:
m=(sq rt 2)/2 x 13
n=(sq rt 2)/2 x 13
your answer would be 78
78
9/702
- 63
_____
72
- 72
_______
0
