I only need help with part b!

9514 1404 393

  99

Step-by-step explanation:

b) Use your answer from part (a) to write a ratio equal to 8/3.

  A/B = (7x -5)/(2x +5) = 8/3

  3(7x -5) = 8(2x +5)

  21x -15 = 16x +40

  5x = 55

  x = 11

The total number of counters is 7x+2x = 9x = 9·11 = 99.

There are 99 counters in the two bags.

Additional comment

The original distribution was A=77, B=22. After moving 5, the distribution was A=72, B=27. The ratio 72/27 = 8/3, as required.

the answer will be the last one

the area of a triangle is determined by the formula: base x height * 1/2

you'll need to assign a base to the triangle. based on the vertices given, the simplest base would be the line segment from (-2,1) to (2,1). the distance between any two numbers is found by just subtracting them. here, you should subtract the x values to find the distance of this side.

2 - (-2) = 4.

so the distance (aka the length of the base) is 4. the height of the triangle is the distance between the base and the highest point on the triangle which is (3,4). we should subtract the y values this time to find the height/distance.

4 - 1 = 3

so the height is 3.

base = 4

height = 3

hope this if needed hmu