8.235 X 10 -4exponent. The exponent is negative because you moved the decimal to the right instead of left :) hope this helps!
Answer:
because the length is 4 feet more than the width
=> the length is x + 4 (feet)
because the base has an area of 21 square feet
=> x(x + 4) = 21
<=> x² + 4x = 21
The total angle sum of a triangle is 180°
As such, 180= 78 + 2s +4s
102= 6s
s=17
Answer:
the horizontal are called x-axis, while the vertical are called y-axis
