Check the picture below. The perimeter? well, you can just count that off the grid, the area? same, but is just a 7x3 rectangle.
Answer:
add 15 + 33+29 =77
Step-by-step explanation:
mark me brainliest
Okay, so the rate is 1 job / hours, so:
1/3 + 1/7 (This covers both their work rates) = 1/n (n represents the time it take for them to work together)
Get the LCD:
7/21+ 3/21 = 1/n
10/21 = 1/n
Cross multiply:
10n = 21
n = 2.1
It will take them 2.1 hours, or 2 hours and 6 minutes
Answer:
welll the answer is 32.5 as used in the expression
Step-by-step explanation:
-2.5 plot it on a line graph then cooridinate the x and y axis to 35 and add the summ up to get 32.5
Answer:
The answer is 17.2 hours
Step-by-step explanation: Because first you add all hours together (which is 86/15) then multiple it by 3 (week) which is 86/5 = 17.2 hours
