[4, 10] is the sum of 2 vectors with
components [-3, a] and [6,4]. What
is a?

The lines shown below are parallel. if the green line has a slope of -1, what is the slope of the red line?

Will gve pints stars and brainliest

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 (%)