What's 27.63 subtracted by 60

Scale factor of 2 is used to enlarge a figure as shown below the area of is 18 in.²

The sum of these consecutive integers is equal to 9 less than 4 times the least of the integer. find the three integers

Find the magnitude, correct to two decimal places, made by each of the following with positive direction of the x axis a) y= x the answer is 45° but i don’t know how