area of a triangle is 1/2 x base x height
base = 19
height = 3
19 *3 = 57
1/2 x 57 = 28.5 square ft.
Answer:
Step-by-step explanation:
Easy way to do this is step by step. Your quadratic, from your entry, must be
.
Step by step looks like this, one thing at a time:
becomes
becomes

and this of course is

Do the same with the subtraction sign to get the other solution.
If you're unsure of how to enter it into your calculator, do it step by step so you don't mess up the sign. If you enter it incorrectly, you could end up with an imaginary number when it should be real, or a real one that should be imaginary.
Just my advice as a high school math teacher.
Answer:
ANSWER
a=-32
EXPLANATION
If C(a,1) is on the line that passes through A(3, 7), and B(-4, 9), then the three points are collinear.
This implies that, when we find the slope using any two points, we should get the same re. sorry couldnt finish
Step-by-step explanation:
Answer:
65
Step-by-step explanation:
the sequence is decreasing by 8