Alec brought in a tray of caramel brownies and walnut brownies. He brought 70 brownies in all. 49 of the brownies were caramel. What percentage of the brownies were caramel?

70%

Step-by-step explanation:

If 49/70 brownies were caramel, you divide 49 by 70 to get 0.7. You then multiply 0.7 by 100 which is 70. So 70% of the brownies were caramel.

there are many solutions.

step-by-step explanation:

step 1: simplify both sides of the equation.

4x+6=4x^2+10x−4

step 2: subtract 4x^2+10x-4 from both sides.

4x+6−(4x^2+10x−4)=4x^2+10x−4−(4x^2+10x−4)

−4x^2−6x+10=0

step 3: factor left side of equation.

−2(2x+5)(x−1)=0

step 4: set factors equal to 0.

x=-5/2 or x=1

step-by-step explanation:

first, eliminate the parenthesis:

3

x

+

2

−

4

x

second, group like terms:

3

x

−

4

x

+

2

third, combine like terms:

(

3

−

4

)

x

+

2

→

−

1

x

+

2

→

−

x

+

2