Answer:
80 hours
Step-by-step explanation:
let d represent doug, let l represent laura
first, set up a system of equations representing the problem:
since doug spent 10 less than twice the hours laura did, and we know that the total amount of hours they spent together is 230:
l=2d+10
d+l=230
then solve:
*first i rearranged the equations so i can solve this system of equations using elimination method*
l-2d=10
l+d=230
*subtract*
3d=240
d=80
so, doug spent 80 hours in the lab
We must multiply 20% by 5 in order to reach 100%.
To find out the total number of pages in Oswaldo's book, we must multiply his 20% (65) by 5, therefore:
65 * 5 = 325 total pages
Answer:
Step-by-step explanation:
y 1 = StartFraction log x Over log 0.5 EndFraction, y 2 = StartFraction log 2 Over log 3 EndFraction + x
What do you need help with
Answer:
Ok, I will, and I'll tell my friends if this gets marked as brainliest.
Step-by-step explanation:
(:
