9.
6y+4=8+2y+2y
Combine like terms
6y+4=8+4y
Get like terms on the same side, subtract 4 from both sides to get
6y=4+4y
Subtract 4y from both sides to get
2y=4 IS the answer (even though it can be simplified further, that answer isn't one of the choices so 2y=4 is the equation simplified.)
10.
Step 2 was the mistake when you distribute a number you don't add (which is what they did to get 5x) you multiply to get 6x. So the correct step 2 would be
6x-8=12+2x
Becuase of the distributive property.
Hope this helped!
To find the value of x we use sine rule given by
a/sin A=b/sin B=c/sinC
the value of x will be given by:
∠F=180-(127)=53°
13/sin 53=x/sin 87
solving for x we get
x=[13sin 87]/sin 53
x=16.2555~16.3 cm
For this case what we must observe are the following triangles:
ADB
BDC
According to the diagram, the triangles have exactly the same dimensions.
Therefore, it is fulfilled:
Then, the value of AC is given by:
Substituting values we have:
Answer:
The value of AC is given by:
option 3
Answer:
9km
Step-by-step explanation:
30-(13+8)=9km
I hope you understand
