Given:
edge 1 = 3x - 4
edge 2 = x² - 1
edge 3 = 2x² - 15
perimeter if x = 4
edge 1 = 3(4) - 4 = 12 - 4 = 8
edge 2 = 4² - 1 = 16 - 1 = 15
edge 3 = 2(4²) - 15 = 2(16) - 15 = 32 - 15 = 17
Perimeter = 8 + 15 + 17 = 40 feet.
Answer:
7 inches
Step-by-step explanation:
The area of a square is given by the formula ...
A = s² . . . . . s = side length
Using the given area, you have ...
49 in² = s² . . . . . fill in given value of area
7 in = s . . . . . . . take the positive square root of both sides
The length of a side of the square is 7 inches.
I hope your not that lost now.
Finding the range of a function y=f(x) is the same as finding all values that y could be. To do this, we can think of it this way: The range of f(x) is all the y-values where there is a number x with y=f(x).
Answer:
slope: -1/6
Step-by-step explanation:
to find the slope of a line we can use the formula (y2-y1)/(x2-x1)
this means ththe second y subtracted by the first year divided by the second x subtracted by the first x
when plugged in you get (10-8)/(-7-5)
when simplified it becomes 2/-12 and then -1/6
Answer:
The even numbers between 0 and X represents an arithmetic sequence with a common difference of 2
The rule of arithmetic sequence = a + d(n - 1)
Where a is the first term and n is the number of terms
So, for the even numbers between 0 and X
The first term = a = 0
d = 2
So, we need to find n at the last term which is X
∴ X = 0 + 2 ( n -1 )
∴ n - 1 = X/2
∴ n = X/2 + 1
The sum of the arithmetic sequence = (n/2) × (2a + (n−1)d)
Substitute with a and d and X
So, the sum = (n/2) * (2*0 + (n−1)*2)
= (n/2) * ((n−1)*2)
= n(n-1)
= (X/2 + 1) * (X/2)
= X/2 by (X/2 + 1)
So, The quick way to add all even numbers between 0 and X always works.
