There are 1500 students in a school. 65% are girls. how many girls are there in the school?
to find 65% of 1500, multiply 1500 by .65 (to convert percentages to decimals, just move a decimal point over two spaces).
you can check that this answer is right with logic. most of the students will be girls (more than 50%) and 975 makes up most of 1500.
someone else asked this same question a while ago, and you can find their explanation here
y = 8x, slope = 8, y-intercept = 0
we are given the equation and we are to convert it into slope intercept form and identify its slope and y intercept.
we know that the standard equation of a slope intercept form of a line is:
converting the given equation into slope intercept form by making y the subject:
slope = 8
y-intercept = 0
the holiday party will cost $800 if 40 people attend.
first we need to find how much it costs per person.
we know it costs $20 per person so we can calculate how much it costs for 40 people.