Respuesta :
1. Solve for x
4(x-b) = x
4x - 4b = x
4x = x + 4b
3x = 4b
x = 4b/3
2. Solve for y, then find the value of y when given x=-2
6x = 7 - 4y
6x + 4y = 7
4y = 7 - 6x
y = (7 - 6x)/4
x = -2
y = (7 - 6(-2))/4
y = (7 + 12)/4
y = 19/4
y = 4 3/4
3. Solve for h
A = 1/2bh
2A = bh
2A/b = h
4. Find the width of a rectangle with a perimeter of 90 and a length of 15. Draw and label the rectangle first to set up your problem.
90
15
45
30
Perimeter of Rectangles: 2₩ + 2£
90 = 2₩ + 2(15)
90 = 2₩ + 30
60 = 2₩
30 = ₩
Width is 30.
Remember to draw and label the rectangle
4(x-b) = x
4x - 4b = x
4x = x + 4b
3x = 4b
x = 4b/3
2. Solve for y, then find the value of y when given x=-2
6x = 7 - 4y
6x + 4y = 7
4y = 7 - 6x
y = (7 - 6x)/4
x = -2
y = (7 - 6(-2))/4
y = (7 + 12)/4
y = 19/4
y = 4 3/4
3. Solve for h
A = 1/2bh
2A = bh
2A/b = h
4. Find the width of a rectangle with a perimeter of 90 and a length of 15. Draw and label the rectangle first to set up your problem.
90
15
45
30
Perimeter of Rectangles: 2₩ + 2£
90 = 2₩ + 2(15)
90 = 2₩ + 30
60 = 2₩
30 = ₩
Width is 30.
Remember to draw and label the rectangle
