Which matrix is equal to T + V? T=⎡⎣⎢0.12.5−7.8−1.98.21.4⎤⎦⎥ and V=⎡⎣⎢3.22.8−2.3−8.6−1.45.1⎤⎦⎥

In the pendulum formula t=2pi. read the problem on the picture ! ; $; $; ! ; ! ; ! ; )$; ! ; ! ; ! ; $; $; $! ; ! ; ); $; $$

Which ordered pair (c,d) is a solution to the given system of linear equations- c+2d=13 -9c-4d=-15

Acompany that manufactures and sells guitars made changes in their product range. from the start they had 20 models. then they reduced the number of models to 15. as a result, the company enjoyed a 10% increase in turnover. - how much did the stock level change? in (%)