CPhill

Thanks for that....Britishrain......

Quadrant 1....x and y both positive

Quadrant 2.....x negative, y positive

Quadrant 3......x and y negative

Quadrant 4.....x positive, y negative

7n−(9n+1)>5    simplify

7n - 9n - 1 > 5

-2n - 1 > 5     add 1 to both sides

-2n > 6           divide each side by -2 and reverse the inequality sign

n < -3

x^-7  =   1 / x⁷

13.4-21.5x35.4 =

13.4 - (21.5 x 35.4) =

13.4 - 761.1 =

- 747.7

Assuming that "a" is one leg and "b" is the other leg, we have

tanA = a/b = 3/b = .75 = 3/4

So "b" must be 4

And if "B" refers to angle B, we have

tan B = (4/3)  →

tan^-1(4/3) = B = 53.130102354156°

598.8+76.243+3.027 = 678.07

We can do some "math" here, but let's use some logic, instead

If 3 counselors supervise 45 students......each counselor supervises 15 students

Then 10 of them would supervise 150 students......

[3*pi^-4 ]³  =

3³ * pi^-12  =

27 * pi^-12 =

0.0000292122690443

Remember.....

Distance / Time = Rate    .........so......

1233 miles / 36 hours = 34.25 mph