Answer:
d = 3
Step-by-step explanation:
Expand the right side and compare the coefficients of like terms
x² + 6x + c = x² + 2dx + d²
For the 2 sides to be equal then coefficients of like terms must be equal
compare coefficients of x- terms, then
2d = 6 ⇒ d = 3
Answer:
Step-by-step explanation:
Givesn
Let P = 10x + y
Let Q = 10y + x
Solve
P - Q = 54 Substitute in for x and y
10x + y - 10y - x = 54
9x - 9y = 54 Divide the entire equation by 9
x - y = 6
Start by letting x = 9
9 - y = 6 Subtract 9 from both sides.
-y = 6 - 9
-y = - 3
y = 3
Therefore P is 93 <<<< Answer
Check
93 - 39 = 54 which checks.
Answer: 2
Step-by-step explanation:
-20 / -10
= 2
Since (-) + (-) = positive
Answer:
2.5
Step-by-step explanation:
5 divided by 2 is 2.5.
y=5
x=2
you only divide y by x.
i think this is right, but if it isnt, its probably gonna be 0.4 since 2 divided by 5 is 0.4. chose which one you think is more reasonable lol