Male to female is 8:5
So
Let's make male = 8x
female = 5x
8x-400/5x-300=8/3
The 8/3 is because that is what the ratio was after some of the students left
multiply by 5x-300 on both sides
8x-400=(5x-300)*(8/3)
multiply by 3 on both sides to remove the denominator
(8x-400)*3=(5x-300)*8
24x-1200=40x-2400
+2400 +2400
24x+1200=40x
-24x -24x
1200=16x
divide by 16
1200/16=16x/16
75=x
Now to find total we do 8x+5x we said male were 8x and female were 5x
8(75)+5(75)
600+375=975 total students
Answer: D
Step-by-step explanation:I think if its wonge let me know
2. $350
3a: 15 is half of 30, so knowing that means the answer is 50%
3b. 3 is 1/4 of 12 because 3x4 is 12, meaning that 3 is 25% of 12.
3c. 6 over 10 as a decimal is 0.6. Which as a percent is 60%
4. Noah's method does work because 20% x 5 is equal to 100% of a number.
Answer:
B
Step-by-step explanation:
To find the answer, translate each point and then use the process of elimination.
For the first point, the coordinates are (-4, -2). The -4 is x and the -2 is y. Translations up and down relate to the y value, while translations left and right relate to x. To translate up 4 units, add 4 to the y value of the coordinate. -2 + 4 is 2, so the y coordinate of the first point will be 2. That eliminated A and D.
For the second point, translate up 4 units (-5 + 4) and you get -1. So the y value of the second point will be -1. In option C, it is positive 1. So that leaves only B.
<span>You would start out at in the middle of a number line (horizontal). After the first play, you would move to the left on the line 5 spots (to simulate 5 yards lost) and then make a dot to show your new position. You would do the same thing for the next two plays, moving 5 spots to the left each play and creating a new starting point each time. The total spots moved after the 3 plays is 15 spots to the left.</span>
