Answer:
Step-by-step explanation:
Add the two scores to make 347
3x + 2 + 300 - 2x = 347 Combine like terms on the left
3x + 302 - 2x = 347
x + 302 = 347 Subtract 302 from both sides
x = 347 - 302
x = 45
Scores
Yasmine = 3x + 2 = 3*45 + 2 = 135 + 2 = 137
Makayla = 300 - 2x = 300 - 2*45 = 300 - <u>90 = 210</u>
Total 347
X² - 7x - 8 = 0
You can use the Viet theorem
x₁ + x₂ = -p
-1 + x₂ = 7
x₂ = 7+1
x₂ = 8
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B) hexahedron
hexahedrons have 6 faces, the same as a cube.
Sin2(x) +cos(x)=1
from the relation: (sin2(x) +cos2(x) =1 )
so , sin2(x)=1-cos2(x)
by subs. in the main eqn.
1-cos2(x) + cos(x) =1
by simplify the eqn.
cos(x) -cos2(x)=0
take cos(x) as a common factor
cos(x)* (1-cos(x))=0
then cos(x)=0 && cos(x)=1
cos(x)=0 if x= pi/2
& cos(x) = 1 if x = 0 , 2*pi
so the solution is x= {0,pi/2 , 2*pi}
Multiply all the equations together and then divide it by the smallest number