Answer: 10 inches.
Step-by-step explanation:
We have to solve a system of equations.
The formula to calculate a triangle area is A = (b.h)/2
where b is the base and h is the height. This will be our first equation.
Since the height is 4 inches greater than the base, the second equation will be: h = b+4
We replace h and the value of the area (70 square inches) in the first equation, and we solve it by using the cuadratic equation formula:
70 = (b . (b+4)) / 2
70 . 2 = b² + 4b
140 = b² +4b
0 = b² + 4b - 140
The roots of this polynomial are -14 and 10. Since a distance can't be negative, the length of the base is 10 inches.
Answer:
e^2
Step-by-step explanation:
Since you can spend all but 20%, then you can spend the rest, namely the 80%.
whatever% of anything is just (whatever/100) * anything.
therefore, 80% of 225 is then (80/100) * 225, that much.
Answer:60
Step-by-step explanation:
5x4x3=60
Answer:
Step-by-step explanation:
eq. of line through (-4,0) and (3,2) is
y-0=(2-0)/(3+4) (x+4)
y=2/7 (x+4)
or y=2/7 x+8/7
m1=2/7
b1=8/7
eq. of line through (-3,2) and (4,0) is
y-2=(0-2)/(4+3) (x+3)
y-2=-2/7(x+3)
y=-2/7 x-6/7 +2
or y=-2/7 x+8/7
m2=-2/7
b2=8/7
m1b2+m2b1
