The angle measure of a straight line is 180°, and so if the you know that one angle off of it is (5x)°, then you know that the other section is (180 - 5x)°.
Because it's an isosceles triangle, there are two identical angles, which happen to be the angles with the measure of (5x - 30)° and (180 - 5x)°.
Since they have the same measure, 5x - 30 = 180 - 5x. Solve:
Thus,
x = 21°.
Answer:
Step-by-step explanation:
area of trapezium ABCD
=(16.5+12)/2 \times 15
=(28.5)/2 \times 15
=213.75 cm^2
Area of PQRS
=213.75 \times (\frac{2}{3} )^2\\=213.75 \times\frac{4}{9} \\=95 ~cm^2
area of green portion=213.75-95=118.75 cm²
I want the phone so your answer is simple
7+4+4= 15
15-4=11
you answer is 11:4
Rules
1)ln a+ln b=ln(a+b)
2) x ln(a)= ln(a)^x
3) ln(a) -jn(b) =ln (a/b)
so,
1) <span>ln b + ln c^2 =ln(b/c²)
so, </span>3 ln a - 1/2(ln b + ln c^2)=3 ln a - 1/2ln(b/c²) = 3 ln a - ln(b/c²)^1/2 =
3 ln a - ln(b/c²)^1/2 =ln a³ - ln(b/c²)^1/2 = ln a³ - ln ((b^(1/2)/(c²)^(1/2))=
= ln a³ - ln ((b^(1/2))/c) = ln ( a³ /((b^(1/2))/c) )= ln ( (a³ c)/(b^(1/2))