She spent 20+10+15=45 in total
7:30-45 minutes=6:45. As a result, Jill starting her homework at 6:45 or C. Hope it help!
The measure of angle b is 25°.
Solution:
Given data:
The "L" shape angle is a right angle.
Right angle is splitted by another line and two angles are formed.
One angle is 65° and the other angle is b.
Let us find the other angle b.
65° + m∠b = 90°
Subtract 65° from both sides of the equation.
m∠b = 90° – 65°
m∠b = 25°
Hence the measure of angle b is 25°.
The area of a trapezoid = 0.5h(a + b) where a and b are the lengths of the parallel sides
so here we have 0.5(8)(a + 12) = 144
solve for a
4(a + 12) = 144
4a + 48 = 144
4a = 96
a = 96/4 = 24
Step-by-step explanation:
x^2-4x+3=0
(x-3)(x-1)
with the help of trenom you get
trenom is where you need 2 numbers that if you add them together u get "b" and if multiplied u get "c"
then flip them (if positive to negative or negative to positive)
x=3
x=1
and the a is positive
so its a minimum
and the cords are (2,-1)