X = y + 1...so sub in y + 1 for x in the other equation
4x + 3y = -31
4(y + 1) + 3y = -31...distribute thru the parenthesis
4y + 4 + 3y = -31...subtract 4 from both sides
4y + 3y = -31 - 4....combine like terms
7y = - 35...divide both sides by 7
y = -35/7
y = - 5
now sub -5 in for y in either of the original equations to find x
x = y + 1
x = -5 + 1
x = -4
solution is (-4,-5)
Answer:
72
Step-by-step explanation:
cross out 4 from left to right, right to left, you get 71 and 73, the mean of those two numbers is 72
Answer:
You would divide 132 by 3 to get the unit rate of 44 mph. Then multiply by 4 to get 176 miles in 4 hours
Step-by-step explanation:
Answer:
1 1/2
Step-by-step explanation:
3^3/7 ≈ 1.601
1.601 rounded to the nearest half is 1 1/2.
