Use the equation:
76 * .8 + 61 * .2 = Final Grade
Minus 3 both sides
-1/2x=-x+4
we hates fractions
times -2 both sides
x=2x-8
minus 2x both sides
-x=-8
times -1
x=8
Answer:B
Step-by-step explanation:
9 : 180 = 1 : 20
5: 200 = 1:40
12:240 = 1 : 20
10 : 400 = 1 : 40
8 : 560 = 1 : 70
give brainliest
Answer:
Step-by-step explanation:
because this is an isoscele triangle this means that the angles from the base are congruent what mean that than one angle has measure of 54 degree - given - so the second angle from the base has a measure of 54 degree too
we know that the sum of angles of a triangle is equal 180 degrees so the vertex angle has a measure of 180 -(54+54) = 180 -108 = 72 degrees
