Answer:
104:2=52
3*52=156
1) 156/3
2)364/7
7*52=364
8-3(x+6)
explanation:
it just makes sense lol but also bc “8 decreased by three” means “8 minus 3”
then “times” means “multiply”
then “a sum” means “addition”
then “a number” since we don’t know what a number is then we use “x”
“and” means “addition”
“a number and six” means “x+6”
<span>To solve this problem, we can use this formula d = rd (distance = rates x time)
She runs at a speed of 9 mph and walks at a speed of 3 mph.
Her distance running is
d = 9tr
where tr is the time she spends running
Her distance walking is
d = 3tw
where tw is the time she spends walking
The distances are the same so
9tr = 3tw
We also know that the total time is 5 hours
tr + tw = 5
tr = 5-tw
Substitute this value of tr in the first equation
9tr = 3tw
9(5-tw) = 3tw
45-9tw = 3tw
45 = 12tw
3.75= tw
Denise will spend 3.75 hours (3 hours, 45 minutes) walking back and 1.25 hours (1 hour, 15 minutes) running.</span>
Answer:
40%
Step-by-step explanation:
l2:w3 means that the fraction of land is 2/5.
time 2/5 by 20, you get 40/100
convert 40/100 into percentage is 40%
