Yoko has a rectangular poster that is 15centimeters long and 12 centimeters wide. What is the area of the poster in square meter
1 answer:
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Answer:
-4.54 and 1.54
Step-by-step explanation:
This is a quadratic equation
Let Δ be our discriminant :
- a= 1
- b= 3
- c= -7
- Δ = 3²-4*1*(-7)= 37≥0
so we have two solutions : x and y
x =( -3-)/2 = -4.54
y= ( -3+)/2= 1.541
then the solutions are -4.54 and 1.54
There is a theorem in Geometry stating that the square of the tangent segment (ST) is equal to the product of the external secant segment (TR) and the whole secant segment (TQ).
SQ x SQ = TR x TQ
SQ squared = 7 x 30
SQ squared = 210
SQ =