Answer: x = 2
Step-by-step explanation:
7x - 9 = 4x - 3
+3
7x - 6 = 4x
-7x
-6 = -3x
/-3
2 = x
Answer:boys: median=50, mean=46
Girls: median= 33, mean=34
Step-by-step explanation:
Mean is the average. Median is the middle number. Both groups had 10 scores. Boys ranged from 15-81. Girls from 0-75; their mean & median would be less because their scores are less.
Two the smaller right angled triangles are similar. Therefore:
Answer: a) 4.5
Perimeter of a square = 4s = 20ft
s = 20/4 = 5 feet
New length = 5 + 2 = 7 ft
New width = 5 - 1 = 4ft
New perimeter = 2(7 + 4) = 2(11) = 22ft