For the second one is $19 im still figuring out the first one
2x-3y=13 equation (1)
x+2y=-4 equation (2)
multiply equation (2) by -2
-2x-4y=8 now we got equation (3)
Add equations(1) and (3) and combine like terms
2x-2x-3y-4y=13+8
-7y=21
y=-21/7= -3
substitute y with -3 in equation (2) and solve
<span>x+2(-3)=-4
</span>x-6=-4
x= -4+6
x=2
the solution for the system of equations is x=2, y= -3
Answer:
Step-by-step explanation:
-0.5(3x + 5) and -1.5x + 2.5
-0.5(3x + 5)...distribute the -0.5 thru the parenthesis
-1.5x - 2.5
no, these are not equivalent.... one is -1.5x + 2.5 and the other is -1.5x - 2.5....not the same
Everyone got a calculator.....each weighed 16 oz.......gave them to 20 students.....20 * 16 = 320 total oz
16 oz = 1 lb
320/16 = 20 lbs <==
or, if u just think about it...u gave 16 oz to each student.....16 oz = 1 lb...so u gave 1 lb to each student....20 students = 20 lbs
Answer:
it is 6°. because 10 degree - 4 degree = 6 degree