Answer:
y = 400 (amt invested at 4%)
x = 500 (amt invested at 7%)
Step-by-step explanation:
Kindly check attached picture for detailed explanation
Answer:
4.5 ft
Step-by-step explanation:
cos 68° = x / 12
x = 12 x cos 68° = 12 x 0.375 = 4.5 ft
Explanation:
Consider the case a = -1. Then the expression becomes ...
(-1+1)(-1+1) > (-1-1)(-1-1) . . . . test case
0·0 > (-2)(-2) . . . . . simplified a bit
0 > 4 . . . . . . . . NOT TRUE
_____
If we subtract the right side from both sides, the inequality becomes ...
(a+1)(a+1) -(a-1)(a-1) > 0
a² +2a +1 -(a² -2a +1) > 0
4a > 0
a > 0
The inequality is only true for positive values of "a". For a ≤ 0, the inequality will not be true.
Answer:
D.
Step-by-step explanation:
3-6-3-6×7=-48
3-7*(-3)-6=6
(3-7)×(-3)-6=6
(3-7)(-3-6)=36
These are tricky to understand, but we need to know the sum of 'p' and 'r' to be times'd by 5, so we come up with the expression (p+r)5.
