3,500 is the best estimate if you multiply 7 by round 456 to 500 so 7x500=3,500
Unlike terms displays terms which are not the same. x+2y would be the answer.
By elimination:
y = 3x - 1
y = 2x + 2
Subtract the second equation from the first
0 = x - 1
y = 2x + 2
Subtract the first equation from the second
0 = x - 1
y = x + 3
Subtract the first equation from the second again
0 = x - 1
y = 4
Subtract x from both sides of the first equation
- x = - 1
y = 4
Divide the first equation by (-1)
x = 1
y = 4
<h3>
So, the solution is x = 1 and y = 4 {or: (1, 4)}</h3>
Answer:
48
Step-by-step explanation:
L = D + 28
⅓L = ⅘D
Solve the system of equations using elimination or substitution. Using substitution:
⅓L = ⅘(L − 28)
Multiply both sides by 15:
5L = 12(L − 28)
Distribute:
5L = 12L − 336
Combine like terms:
336 = 7L
Divide:
L = 48
Answer:
Mary has 7 flowers
Peter has 1 flower
John has 2 flowers
Step-by-step explanation:
M + P + J = 10
J = 2P
M + P + 2P = 10
M + 3P = 10
P = 1
M + 3 = 10
M = 7