Answer:
the first one
Step-by-step explanation:
because x has an coefficient
Answer:48.6
we know that
You can paint 75 square feet of a surface every 45 minutes
so
using proportion
Find out how long it takes you to paint a surface area of 81 square feet
45(81)/75=48.6
hope this helped and I hope you get a correct answer :D
Answer is C. multiply by 3 - square root 5
using a^2 - b^2 = (a + b)(a - b)
Im pretty sure these are the answer but make sure to double check.
1.C
2.C
3.C
