10/16 Marks 5295
Here are five number cards.
2.
5
7
8.
9
One of the cards is removed and the mean average
of the remaining four number cards is 6
Which card was removed?
You must show your working.
The card taken away is 2
5+7+8+9=29
29+5=5.8
5.8 rounded up is 6

Multiply −2x(6x^4−7x^2+x−5) express the answer in standard form. enter your answer in the box.

In two or more complete sentences, formulate how to use technology to calculate the appropriate regression model for the given data. you are not required to find the model, just choose the appropriate regression and explain how to use the technology. (-5,,2.,0.8), (0,-0.5), (2,-1.3), (3,-0.8), (5,2)

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.