Answer:
C) 24
Step-by-step explanation:
we know that 18 students is 75% of the class and we need to know 100% of the class. to calculate this, divide the 18 students by 75% to work out what 1% of the students equals:
18 ÷ 75 = 0.24
0.24 students = 1% of the class. multiply this number by 100 to calculate 100% of the class:
0.24 x 100 = 24
∴ there are 24 students in Ms. Perron's class
I hope this was helpful :-)
4+3j=43
-4 from both sides
3j=39
then divide both sides by 3 to isolate j
j=12
70/28 = x/250
this however is not an equation it is a proportion so you would not be able to solve using systems of equations but you could use cross multiplication to solve this problem as well
Let's use the slope intercept form of a line which is:
y=mx+b where m=slope and b=y-intercept.
Mathematically m=(y2-y1)/(x2-x1) and the y-intercept is just the value of y when x is equal to zero, where the line intercepts the y axis...
First you want to find the slope by finding two clearly identifiable points on the graph...I'll pick (4,4) and (0,1), now we can calculate the slope or "m"...
m=(4-1)/(4-0)=3/4 so now we can say our line is:
y=0.75x+b, using point (4,4) we can now solve for b.
4=0.75(4)+b
4=3+b
b=1 so the line is"
y=0.75x+1
