840 = 1×840=2×420 = 3×280 = 4×210 = 5×168 = 6×140 = 7×120 = 8×105
4220=1×4220 = 2×2110 = 4×1055 = 5×844
2840 = 1×2840 = 2×1420 = 4 × 710 = 5 × 568 = 8 × 355
Step-by-step explanation:
In the picture above.
Number 2 I suppose that as a straight line
so , it becomes easy to solve for y angle.
I hope that it's a clear solution.
Answer:
first one is right b and c are 15mm
Answer:
21
Step-by-step explanation:
given : 2 triffles = 7
6 / 2 = 3 so miutiple both side by 3
2 x 3 = 6 and 7 x 3 = 21
6 triffles = 21
OR
Find the cost of 1 triffle:
7 / 2 = 3.5
1 triffle = 3.50
3.50 each x 6 triffles = 21
Simultaneous equations can be solved using inverse matrix operation.
The complete steps of Jacob's solution are:
We have:
Calculate the determinant of
So, the inverse matrix becomes
Replace the first column with to calculate the value of x
So, we have:
Replace the second column with to calculate the value of y
So, we have:
Hence, the complete process is:
Read more about matrices at:
brainly.com/question/11367104