I think the rang numbers are -2 , 2 , -4 , and 2. i hope that correct.
Parentheses affect how equations are done.
EX. 1+1*4
4+1=5
VS
(1+1)*4
2*4=8
A = l x w
so you know that the length is 3m longer than the width, so you could use a formula to represent that
w = l + 3
you then substitute the second equation into the first to solve for l
70 = l x (l +3)
70 = l^2 + 3l
you could then rearrange the formula and solve for l using the quadratic formula
0 = l^2 + 3l - 70
l = -3 +- (square root (3)^2 - 4(1)(70)) / 2(1)
l = -3 +- (square root 9 + 280) / 2
l = -3 +- (square root 289) / 2
l = -3 +- 17 / 2
then you solve for the two seperate roots
l = -3 + 17 /2
l = 14 / 2
l = 7
or
l = -3 - 17 / 2
l = -20 / 2
l = -10
since a length cannot be negative, this root is not viable. therefore l = 7
to solve for w you would use
w = l + 3
w = 7 + 3
w = 10
hope this helps! if you did not understand a step or concept please let me know!
Answer:
lets say they share the cost in 5 parts, because Anna will distribute 4 time as much as Emily.
120 / 5 = 24
Emily: $24 (1/5 of 120)
Anna: $24 * 4 = $96 (4/5 of 120)
Answer:
1 litre
Step-by-step explanation:
When Joel left the house, his bottle was full. He drank 5/8 of a litre, leaving 3/8 of a litre. Add the two numbers together to find the total.
5/8 + 3/8 = 8/8 = 1
