Add the total of both groups and divide by the total number in each group
Group X = 535 / 18 = 29.72 mean
group Y = 500 / 18 = 27.78 mean
Group X has the higher mean
Step-by-step explanation:
- Since,in question 21 the trspezium is an isoseles tapizium
- therefore,9x-17=4x+28
- 5x=45
- x=9
- therefore q=9x-17
- =9*9-17
- =81-17
- q=64
- therefore 2t=360-128(since its isoseles triangle therefore adjacent base angles are equal)
- 2t=23
- t=116
- 2(K+M)=360
- 2(3x+16 + 11x-18)=360
- 2(14x-2)=360
- 28x-4=360
- 28x=364
- x=13
- J=K
- Isoleses angles are equal
- 3x+16=J
- 39+16=J
- J=55
- Bd=Ec (Congeruent sides of congurent trisnle are equal,BED~=CDE)
- 8x-27=2x+33
- 6x=60
- x=10
- Therefore,Bd=8x-27
- Bd=80-27
- Bd=53
Answer:
31500
Step-by-step explanation:
We'll assume that each week, the radio gets new audience who have not yet bought a ticket. Therefore, the sales would be constant for each week. That is to say, 2100 sales weekly since the number of times it's ran is 8 as previously. The sales will therefore be 15*2100=31500 ticket sales
Answer:
its 6 because j counted all the squares yo
Matrix B has dimensions 4x3
Matrix C has dimensions 3x4
Write out those dimensions like so: 4x3 3x4
The inner '3's match up so B*C is possible. The dimensions of B*C is 4x4 as these are the outer dimensions when lining up 4x3 3x4
Since B*C is a square matrix, it is possible that an inverse could exist. Keep in mind that this isn't a guarantee as the determinant of B*C could be zero (which would lead to BC being non-invertible). Though of course we'd need more info.
