Answer:
Step-by-step explanation:
-3x + 4y = -18
8x - 4y = 28
5x = 10
x = 2
4 - y = 7
-y = 3
y = -3
(2, -3)
Answer:
B
Step-by-step explanation:
We are given the function:

And we want to determine the value of:

Let this value equal <em>a</em>. In other words:

Then by the definition of inverse functions:

Hence:

Solve for <em>a: </em>

By the Zero Product Property:

Hence:

Thus, f(9) = 225. Consequently, f⁻¹(225) = 9.
In conclusion, our answer is B.
Answer:
13.1mi
Step-by-step explanation:
Length(l) = 4.1mi
Breadth(b) = 2.5 mi
Perimeter of a rectangle = addition of all sides that is = l + l + b + b as a rectangle has 2 opposite equal length and also breadth.
Therefore perimeter = 4.1 + 4.1 + 2.5 + 2.5
= 8.1 + 5
=13.1 mi
I hope this was helpful, Please mark as brainliest
Answer:
x+
y+5=0
Step-by-step explanation:
the intersection of x-2y=0 and 3x+y+5 is (
;
)
=> the line :
x+
y+5=0