Answer:
45
Step-by-step explanation:
20 boys= 5 times the ratio
So, 5x5=25
25 girls and 20 boys= 45 students
Answer:
£1920
Step-by-step explanation:
The amount she spent in 2016 is 20% less than 2017. 20% less than is the same as 80% of the amount she spent in 2017. So, to find how much she spent in 2016, multiply 2400 by 0.80 (the decimal form of 80%):
2400 * 0.8 = 1920
Emily spent £1920 on holiday in 2016.
I hope this helps :)
Answer:
Step-by-step explanation:
To find the number of yard, <em><u> divide </u></em> the number of feet by the unit rate <em><u> 3 </u></em> feet per yard.
Answer:
The answer to your question is 12x + 24y ≤ 120
Step-by-step explanation:
Data
12 min oil change and variable x
24 minutes tire change and variable y
total time = 120 min
Process
1.- Calculate the number of oil changes
12x
2.- Calculate the number of tire changes
24y
3.- Calculate the total number of changes
12x + 24y
4.- Write the inequality
12x + 24y ≤ 120
Use ≤ to mention that 120 is been considered.
Answer:
The length of the actual building is 112 meters long.
Step-by-step explanation:
The key words we need to know are these : scale is 1 millimeter = 7 meters, and 16 millimeters long.
The question is asking for the building's actual height.
To solve this, we need to set up a ratio, have the scale being one ratio and the other 16 millimeters over blank. It's going to look like this :
= 
We need to make sure all the units are lined up - the mm parts of the ratio are next to each other.
Now that we have our ratio set up we can cross product to solve for x.
1(x) = 16(7)
x = 112
So x is 112, or the length of the actual building is 112 meters long.
Hope this helps, please mark brainliest if possible. Have a nice day. :)