3x+y=-5
12x+5y=27
Let y =-5-3x
Insert y into equ.2
12x+5(-5-3x)=27
12x-25-15x=27 den rearrange
-3x=2 den x =-2/3
Den put xinto equ 1
3(-2/3)+y=5
-2+y=5(collect like terms)
Y =7
An exponential function is a function in which the independent variable is an exponent. Exponential functions have the general form y = f (x) = ax, where a > 0, a≠1, and x is any real number. The reason a > 0 is that if it is negative, the function is undefined for -1 < x < 1.
Answer:
Step-by-step explanation:
distance between center and (1,-2) is

distance of the point from the center>radius of circle.
So it lies outside the circle.
ANSWER
745.31
EXPLANATION
The composite figure is made up of a rectangle and a semicircle.
The area of the rectangular portion
is


The semicircle has a radius of
r=12.5cm
The area of the semicircular portion is

Substitute the value of r and π=3.14 to obtain,

We add the two areas to obtain, the area of the composite figure.
500+245.3125=745.31 cm² to the nearest hundredth.
Last one:
rotation of 180 degrees, and then make it 1/3 (dilation)