Answer:
Step-by-step explanation:
43.75 is not 10 more than 4.375 because the 4 i 4.375 is a ones value and the 4 in 43.75 is a tens. So that makes it 39.375. So chris is incorrect with his thinking
Answer:
It would be to multiply both sides so like you have 9(x-1) = 8(2x + 2)
Step-by-step explanation:
9(x-1) = 8(2x + 2)
9x-9 = 16x+16
and thats the first step
hope this helped :)
Given mean =122.3 and standard deviation =18.5
≈2.49
As a general rule z-scores lower than -1.96 or higher than 1.96 are considered unusual.
Since our z-score = 2.49>1.96 , it is unusual.
Hence correct option is 'C' = "2.49 ; unusual"
P = 2L + 2W
A = LW
Perimeter is given so we will use
The perimeter of a rectangle = 2*length + 2*width
Let suppose the width = x
Length = twice the width = 2x
the Perimeter = 72 = 2*2x + 2*x
72 = 4x + 2x
Now we have 72 = 6x, then dividing both sides by 6we get x = 12
So,
Width = 12 cm
Length is 12 x 2 = 24 cm
The general form for a straight line is y = mx + c where m is slope and c is y-intercept.
Two lines are perpendicular when the product of their slopes = -1
Given line 3x - 7y - 14 = 0, its slope = 3/7 and y-intercept = -14/7 = -2
So a line perpendicular to the given and has the same y-intercept is
y = (-7/3) x - 2