PLEASE HELP ON ALL, I WILL MARK

Step-by-step explanation:

4.

3pounds for $6.99

a.

1 pounds =$6.99/3=$2.33

b.

10 pounds =10×$2.33=$23.3

10.

area right triangle =1/2 bh=1/2 ×{50×30}=750mm²

hope it

step-by-step explanation:

x^(1/6) · x^(1/6) · x^(1/6)   ·x^(1/6) = x^(4/6)   since we add the exponents

4/6 can be simplified to 2/3

the simplified form is x^(2/3)

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a