Hey there!
What I would do to solve this problem is list out all four of the numbers, then place the other three numbers behind it, like so:
71
73
79
17
13
19
37
31
39
97
91
93
These are all of your possible combinations without any repeats. There's a total of 12 possible combos.
Hope this helped you out! :-)
Answer:
136.5 yd²
Explamation:
You break the shape into squares and rectangles and find the area of them and then add them together. To get the area of a triangle you add another half to it to make a square or rectangle. After you've done that, find the area of that shape and then divide it by 2.
Answer:
x = -
, x = 
Step-by-step explanation:
Given
x² - x -
= 0
Multiply through by 4 to clear the fraction
4x² - 4x - 3 = 0
Consider the factors of the product of the coefficient of the x² term and the constant term which sum to give the coefficient of the x- term
product = 4 × - 3 = - 12 and sum = - 4
The factors are + 2 and - 6
Use these factors to split the x- term
4x² + 2x - 6x - 3 = 0 ( factor the first/second and third/fourth terms )
2x(2x + 1) - 3(2x + 1) = 0 ← factor out (2x + 1) from each term
(2x + 1)(2x - 3) = 0
Equate each factor to zero and solve for x
2x + 1 = 0 ⇒ 2x = - 1 ⇒ x = - 
2x - 3 = 0 ⇒ 2x = 3 ⇒ x = 
Answer:
8 : 6 = 24 : 18
Step-by-step explanation:
If there were 24 girls in class, there would be 18 boys.
Girls: 8, 16, 24
Boys: 6, 12 , 18