Answer: 20
Step-by-step explanation:
x+y=5
x-y=4
---------
x+y=5
x=4+y
--------
(4+y)+y=5
4+y+y=5
4+2y=5
2y=1
y=0.5
x=4.5
---------
x²-y²=(4.5)²-(0.5)²=20.25-0.25=20
Answer:
=7.2×10⁵
is in scientific notation
Answer:
6/20 as a decimal is 0.3.
Answer:
51
Step-by-step explanation:
sum of squares of legs, equal to the square of the hypotenuse.
24²+45²=c²
576+2,025=√2,601
√2,601=51
