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1. 4 * (-2.5) * 10 = -1002)4(4²) - 2(-6) + (-2.5) = 73.53)(2(-6))² - 4(10) + (4)² = 120

The accusative case is mainly used for the direct object of verbs. For most of the nouns you will meet, the accusative of masculine and feminine singular will end in with -m and the plural will end in -s....

There are a couple of ways to approach this. A grid showing all the possibilities can be drawn up, which would help to illustrate the solution a little more explicitly. For now, let's talk through the log...

Mean is the average value, to calculate it you have to add up all the values and divide it by the number of values.So in this case, adding up: 34 + 35 + 36 + 32 + 39 = 176Then, divide the sum by number of...

One way to find the values of x and y is to substitute the value of x into one of the equations. To sub in x we need to rearrange an equation to get x on its own. We can change the second equation to x = ...