Answer:
7a^6b
Step-by-step explanation:
Using the pascal triangle to do this binomial expansion, we find out that the coefficient is 7. The a variables start at the power to which you are expanding and reduce by 1 for every consecutive term. The b variables start at the power of 0 and increase by 1 for every consecutive term. Using this information, we find out that the second term in the binomial expansion (a+b)^7 is 7a^6b
Note that the power of b in the second term is b^1 which is the same as b
What’s the second inequality symbol?
x = 6
Step-by-step explanation:
It's based on similarity of triangles
DEF ~ △XYZ
The sides should be taken in order, like the triangles start with DE and XY so, we'll proportionate DE and XY and then the next two sides and so on.
I'm using 
to get the value of x.
[You can use any two fractions out of the three given above. ]
Hence, the value of x is 6.
Answer:
B 84
Step-by-step explanation:
Angle COB = 96 (Angle CDB x2)
Lets split Quadrileteral ABOC into 2 equal parts.
Angle ABO = 90 (tangent segment of circle)
Angle AOB = 96/2 = 48
Angle OAB = 180 - 90 - 48 = 42
Angle A = Angle OAB x 2 = 42 x 2 = 84
Therefore Answer is B.
Answer:
Ice rental at the local skating rink is $150 for 2h. Skate rental is $3 per person. The Grade 8 class went skating. All students rented skates. The total cost was $231. How many students went skating?
