Can someone please help me

The error is located in step 9, because the student made the following operation: , instead of , presented in step 4) of our demonstration. The real solution is 9.

Step-by-step explanation:

First, we proceed to show the appropriate process to solve the equation for by algebraic means. That is:

1) Given

2) Definition of substraction

3) Distributive property

4)  /

5) Compatibility with addition/Commutative and associative properties

6) Existence of additive inverse/Modulative property

7) Compatibility with multiplication/Commutative and associative properties

8) Existence of multiplicative inverse/Definition of division/Result

The error is located in step 9, because the student made the following operation: , instead of , presented in step 4) of our demonstration. The real solution is 9.

6 hours 48 min

step-by-step explanation:

68÷5=13.6

13.6×30=408min=6 hours 48 min.

hope to and hope that my answer is brainliest.(follow me )

-3

step-by-step explanation:

a drawing really does here:

so i draw the horizontal line y=2 and the vertical line x=-2 at this intersection i put b (this is where my right angle is going to be).   so point b is at (-2,2).   point a is 5 units long and is also on y=2 so this point has to be (3,2) or (-7,2) -doesn't matter i will go with (3,2).

now we know c is at (-2,y) we don't know the y yet bet we know that c is on x=-2.

we have the area of the triangle is .5bh=12.5

we know the base length is 5 (ab)

we have the height is (2-y) if you look at your

plug in

.5(5)(2-y)=12.5

solve for y to get the y-coordinate for c

2.5(2-y)=12.5

divide both sides by 2.5 giving:

2-y=5

now subtract 2 on both sides

-y=3

y=-3