Answer:
Using the Sine Rule , which states that
In Δ ABC
∠A +∠B+∠C=180°→→Angle Sum Property of Triangle
72°+85°+∠C=180°
∠C=180° - 157°
∠C= 23°
All the angles are in degrees.
Using the table of Sine, Calculating Sine Values
Sin 72°= 0.9510
Sin 85°=0.996
Sin 23°=0.390
Among the five Options,
Option E: a= 15.09 and b=15.81 is approximately true.
Y=1
x=7
that's the answer !!
Answer:
3 Pages
Step-by-step explanation:
- Let the pages of economics read = e
- Let the pages of psychology read = p
- Let the total time taken on each instance=t
In the first instance, the student has time to read 50 pages of psychology and 10 pages of economics.
The student could read 30 pages of psychology and 70 pages of economics.
Since the two situations take the same amount of time, we have:
50p+10e=30p+70e
Collect like terms
50p-30p=70e-10e
20p=60e
Divide both sides by 20
p=3e
Therefore, in the time it will take the student to read 1 page of psychology, the student can read 3 pages of economics.
The length written in scientific notation is 85 x 10^-6
I hope this helps you
x^2/2+12x/2+10/2=0
x^2+12x+10=0
ax^2+bx+c=0
disctirminant =b^2-4ac
x1,2=-b (-,+) square root of disctirminant /2a
a=1 b=12 c=10
disctirminant = 12^2-4.1.10=144-40=104
x1= -12+square root of 104/2
x2= -12- square root of 104/2
