Answer:
(3x−4y)^2
Step-by-step explanation:
Rewrite
(3x−4y)2 as
(3x−4y)(3x−4y)
(3x−4)(3x−4y)
Expand
(3x−4y)(3x−4y)
3x(3x)+3x(−4y)−4y(3x)−4y(−4y)
Simplify and combine like terms.
9^2−24xy+16y^2
Answer: The sign is positive.
Step-by-step explanation:
a > 0 and b < 0
So, a·b < 0
⇒ -4·a·b > 0
⇒ -4·a·b - 4·a·b > 0
Hence, the sign will be positive
The banquet hall is serving 7,182 pounds each day.
Answer:
5x=5(20)=20 for Ed
2x=2(20)=40 for pete
together they had 140 cars
Step-by-step explanation:
5:2 is the ratio
5x-30=2x+30 tat when Ed gave Pete 30 cars
solve for x
5x-2x=30+30
3x=60
x=20
substitute for x: 5x=5(20)=20 for ED
2x=2(20)=40 for pete
Answer:
A)
B)
Step-by-step explanation:
To find the distance between any two points, we can use the distance formula:
Problem 1)
We have the two points (-4, 5) and (7, 18).
Let (-4, 5) be (x₁, y₁) and let (7, 18) be (x₂, y₂).
Substitute:
Evaluate:
Problem 2)
We have the two points (-2, -3) and (-4, 4).
Similarly, we will let (-2, -3) be (x₁, y₁) and (-4, 4) be (x₂, y₂).
Substitute:
Evaluate: